Lawn mower cleaner brush. How to clean your Husqvarna Automower®

29.07.2023 Beanrad brush, cleaner, lawn, mower

US3959955A. Self cleaning rotary lawn mower blade and deck assembly. Google Patents

Publication number US3959955A US3959955A US05/571,490 US57149075A US3959955A US 3959955 A US3959955 A US 3959955A US 57149075 A US57149075 A US 57149075A US 3959955 A US3959955 A US 3959955A Authority US United States Prior art keywords blade deck shank mower pins Prior art date 1975-04-24 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired. Lifetime Application number US05/571,490 Inventor David M. Smith Frederick C. Mennen Original Assignee Smith David M Mennen Frederick C Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) 1975-04-24 Filing date 1975-04-24 Publication date 1976-06-01 1975-04-24 Application filed by Smith David M, Mennen Frederick C filed Critical Smith David M 1975-04-24 Priority to US05/571,490 priority Critical patent/US3959955A/en 1976-06-01 Application granted granted Critical 1976-06-01 Publication of US3959955A publication Critical patent/US3959955A/en 1993-06-01 Anticipated expiration legal-status Critical Status Expired. Lifetime legal-status Critical Current

Images

Classifications

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/001 — Accessories not otherwise provided for
A01D34/003 — Means for cleaning the machine

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D34/00 — Mowers; Mowing apparatus of harvesters
A01D34/835 — Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
A01D34/84 — Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for edges of lawns or fields, e.g. for mowing close to trees or walls

A — HUMAN NECESSITIES
A01 — AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
A01D — HARVESTING; MOWING
A01D2101/00 — Lawn-mowers

Abstract

A self cleaning rotary lawn mower blade and deck assembly in which the lawn mower blade is provided with metal pins symmetrically mounted on opposite sides of the opening for the center shaft, the tops of the pins being spaced from the deck by a critical distance of one-fourth of an inch or. 1/32 of an inch and being spaced from each other on from 2 to 4 inch centers, so that a 5 inch blade need only have four pins total, half on one side and half on the other side. The mounting of the pin is such that the pin shank whips through an angle of about 30°, e.g., about 15° each side of the normal vertical position and this whipping action which takes place during rotation of the blade removes debris, clippings, and the like which tend to adhere to the underside of the deck.

Description

The invention is in the field of motorized harvesters having the motor on a ground-supported carrier with a rotatable blade mounted on the motor shaft, and the motorized vehicles of this type are the common and widely used self-propelled lawn mowers in which a novel provision is made for removing debris and cut clippings which accumulate on the underside of the deck by means of flexible metal pin attachments secured in symmetrical fashion to the cutter blade about the motor shaft opening thereof and at a critical spacing from the deck. The invention includes novel attachment means for the pins to the cutter blade.

In the prior art the patent to Brown, U.S. Pat. No. 2,957,295, and the patent to Johnson, U.S. Pat. No. 3,396,518, each teaches the concept for cleaning cut grass from the underside of the housing of rotary mower by bringing a scraper into direct contact with the underside. The scraper is a second element mounted on a common shaft with the blade. If the housing is flat as shown in Johnson and Brown, then there is no problem with the scraper doing its job, but the housing in most commercial moweres are not flat. Instead, they are curved as shown in the patent to Phillips, Jr. et al, U.S. Pat. No. 2,953,888. It is an essential requirement in Brown that the Brown end elements 19, which are curved and act as air scoops to blow away the grass clippings out of the chute 22 at the top of the mower. This pair of upstanding metal elements 19, which are bolted or riveted to the ends of the blade 11, has as the only function an air pumping action, because of the inclined air deflecting surface at 13 (see column 3 of Browm, lines 5.- 18).

The significant difference of the present invention over Brown and Johnson is that a single blade is used instead of two blades. The separate blade for scraping the ceiling of the housing has never been used because most housings are curved and because when stones are picked up by the blade, they jam the cleaning blade.

There is no concept in these prior art patents for the mounting of non-cutting pins as well as non-scraping pins, which do not come into contact with the underside of the housing, but rather come into contact with clippings of grass or debris which cling to the underside of the housing.

There is further no teaching in the prior art of a further critical limitation that the tip of the flexibly mounted pin be spaced from the surface of the housing underside by 1/4 inch or. 1/16 inch and that a pair of equally spaced pins on each side of the center shaft mounting opening can completely prevent the building up of clippings or debris on the underside of the housing.

Accordingly, it is an object of the invention to provide flexible non-cutting and non-scraping pins on the rotary blade, which pins come into contact with clippings of grass and debris collecting on the underside of the housing by maintaining a critical spacing of about 1/4 inch from the tip to the underdeck and the thereby clean and prevent the buildup of clippings.

It is a further object of the invention to flexibly mount pins on the rotary lawn mower blade in spaced apart relation on opposite sides of the center of rotation, and with pins short of the underdeck by about 1/4 inch, so that the pins are dynamically balanced during rotation of the blade.

It is a further object of the invention to mount a plurality of pins on opposite sides of the center of rotation of the lawn mower blade but spaced apart to a degree of closeness (about 3 to 5 inch centers) as will keep the entire underdeck clean when swept by the flexible pins, which extend about 1/4 inch from the blade short of the underdeck.

It is still a further object of the invention to provide a mounting means for pins secured onto opposite sides of the center of rotation of the rotary mower blade which mounting means is flexible due to an elastomeric grommet which permits the end of the top which is about 1/4 inch short of the underdeck to whip and thereby clean underdeck from clippings.

It is a further object of the invention to provide a clip on mounting means for the above pins which does not require boring a hole in the rotary blade or fastening by welding.

Husqvarna Automower cleaning & maintenance

The invention is a self cleaning rotary lawn mower blade and deck assembly comprising flexible mounting means, which secure metal pins to the blade, there being at least one pin on each side of the center hole of the blade in symmetrical mounting whereby the normal rotation of the blade during cutting is not impaired, the shank of the pin extending to a critical distance of one-fourth of an inch or. 1/32 of an inch from the underside of the deck so that the pin whips through an angle of about 15° on each side of the normal vertical position during rotation of the blade to remove debris, clippings, and the like which tend to adhere to the underside of the deck.

FIG. 1 is a top plan view of a power lawn mower fitted with a 24 inch rotary blade showing the spaced apart relationship of the symmetrically spaced flexible mounting means and pins on both sides of the center shaft bore and the upper deck;

FIG. 2 is a vertical section view showing the spacing of the flexible pins along the length of the rotary blade and the critical spacing between the top of the pin and the underside of the deck;

FIG. 3 is a view of a single pin mounted on the blade showing the critical spacing relationship between the top of the single pin and the underside of the deck;

FIG. 4 is a prospective view of the blade of FIG. 2, which is detached from the hub and shaft of the power lawn mower;

FIG. 5 is a fragmentary side view of an edger or trimmer showing a modification of only two flexible shank members on a small diameter blade;

FIG. 7 is a plan view of an alternate embodiment illustrating attachment of the flexible shank members by means of a strap to a cutter blade;

FIG. 9 is a plan view of still another embodiment illustrating the flexible shank members assembled beneath the cutter blade; and,

FIG. 11 is an enlarged fragmentary vertical sectional view, similar to FIG. 8, showing another modification for mounting a pin shank housing on a mower blade; and,

The preferred embodiments illustrated in the drawings herein are directed to modifications, all of which provide pins symmetrically mounted on opposite sides of the center opening for the center shaft of the lawn mower blade in which the tops of the pins are spaced from the underside of the deck by a critical distance of about 1/4 inch and which are each mounted in a mower to permit the shank of the pin to whip through an angle of about 15° on each side of the normal vertical.

In the embodiments of FIGS. 1 to 3, the mounting means for the pins is welded to the blade above the blade, e.g., on the upper surface thereof. In the embodiments of FIG. 4, a larger blade is illustrated but with the same symmetry so that high speed rotation will not induce rocking of the blade. In FIGS. 5 and 6, an edge trimmer is shown with a very short blade but the same principle of symmetry of pin mounting is followed. In FIGS. 7 and 8, the attachment of the pin by means of a strap, this eliminating the need for welding. In FIGS. 9 and 10, mounting is started from the underside of the blade in contrast to the mounting in FIG. 1. In FIGS. 11 and 12, mounting is by means of a special hinged fastener means fitted with wing nuts.

As shown in FIGS. 1 to 3, the symmetrically mounted metal pins which are flexibly secured on each side of the center opening 9 of the blade 6 have a pin shank 1 which extends upwardly from the head 5. Each pin head 5 has its upper portion held within the metal cap 2 by means of a flexible rubber or plastic grommet 4 and the central opening of the grommet 4 is wider than the top opening 7 in cap 2 (see FIG. 3), thus permitting a whip action shown in deflection 8 in FIG. 2. The critical spacing of one-fouth of an inch from the top end of the pin shank 1 to the underside of the deck 11 insures that only the shank whips back and forth during rotation of the cutter blade (24 inch blade in FIGS. 1 to 4) at an angle of about 15° on each sde of the vertical, while the head 5 is securely held below rubber or plastic grommet 4 with the metal cap 2 welded securely to the blade 6 as shown by weld fillet.

The critical 1/4 inch spacing of the top of the shank 1 from the underside 11 of the deck is maintained for flat as well as curved protions of the deck so that pebbles or pieces of wood cut by the blade will be passed by the flexible shank. The spacing of the pins on about 4 inch centers provides balanced two pairs of pins on each side of the central opening 8 in a 24 inch blade.

This spacing of pins in an edger blade provides only one pin on each side of a small diameter 5 inch blade which in this case is on two inch diameters. The pin spacing is symmetrical in all installations whether on 2 inch centers about the center opening when in the 5 inch trimmer blade of FIG. 5 or on 4 inch centers in a 48 inch highway power mower blase as shown in FIG. 4.

The trimmer blade modification shown in the trimmer mower 22 of FIG. 5 can be seen in the profile in FIG. 7 and in side plan in FIG. 6. The same critical spacing of about 1/4 inch from the side deck 71 is shown in FIG. 6 as pointed out above in connection with FIGS. 1 to 3.

The edger trimmer 22 is of the conventional type and is provided with 5 inch blade 24 having mounting opening 28. The blade 24 has mounted thereon the flexing shank assembly 26 in the same metal cap as used in FIGS. 1 to 3 and utilizing the same flexible grommet as used in this first modification, whereby the whipping action of the shank about 15° inch on each side of the perpendicular line to the blade occurs due to the relatively large opening 28 in the cap of the shank assembly 20.

In FIGS. 7 and 8 there is shown still another modification of a mounting for the flexible shank units utilizing flexible shank assemblies 36, these comprising a strap 48, such as is commercially available from Signode Strap Company, the strap 48 surrounding flexible shank assembly 36 and the blade 34 so that the assembly 36 can be secured to the blade by straping instead of by welding.

The interior of the flexible mounting cap portion of the assembly 36 is in the same as in FIGS. 1 to 3 and FIG. 5, namely, a rubber grommet overlying the head portion 42 and shank 40 extending to within 1/4 inch of the underside of the deck while opening 46 in the cap 44 permits the whip action of shank 40, 15° on each side of the vertical, as in FIGS. 1 to 3 and in FIG. 5.

In FIGS. 9 and 10, there is shown still another embodiment of flexible mounting for the pins, which are critically spaced at about 1/4 inch from the underside of the deck, wherein the flexible shank assemblies 66 are mounted on the underside rather than the upper side of the blade. In this embodiment of blade 64 and flexible shank assemblies 66, the opening 76 in the rubber grommet 74 as well as the opening 68 in the blade are both larger than the shank diameter of shank 70 so that the metal cap 78, which is securely welded to the underside of the blade 64 as shown by fillet 79 bears directly against the head portion 72 of the flexible pin.

FIGS. 11 and 12 illustrate the modification for fastening the same flexible shank assemblies comprising pin shank 81 having the metal cap 82 capture or enclose the base of the shank 81 within the confines of the metal cap 82. A hinged fastening means 80 is formed from a sheet of rigid metal or plastic about each side of the hinge 85, so that the bottom strap portions 84 on each side of the hinge serve to come into face to face contact with the underside of the mower blade 6. Continuing from the bottom strap portions 84, the side straps 83 extend to the top of the cap 82 and are fastened on each side of the pin shank 81 by means of studs 86 welded to the cap 82, there being one stud on each side. The ends of the studs 86 are threaded, and each of the studs 86 extend through the cap to provide a bottom surface of the stud which bears againt the upper surface of the lawn mower blade 6 and which lies wholly within the cap 82.

Because of the bearing engagement of the studs 86 against the top of the blade 6 wholly within the cap 82, the circular bottom edge of the cap and the two shank bottoms of the studs provide secure strapping of the pins, which is maintained by the tightening of wing nuts 87 on the threaded upper ends of the studs 86. As shown in FIG. 11, the studs 86 are welded to the cap 82 to assure alignment and rigid fastening.

To dismantle the pin mounting the wing nuts 87 are unscrewed, the side strap portion 83 is lifted from the studs and the hinge 85 permits bending back the bottom portions 84 of the strap for simple removal.

Obviously, for certain uses where it is not desired to bore holes in the blade, the strapping arrangement of FIGS. 7 and 8 is preferred. In still other uses where welding machinery is available, the embodiments of FIGS. 1 to 3 may be preferred and in certain cases it may be desired to mount the flexible pin assemblies from the underside as in FIGS. 9 and 10.

Claims ( 6 )

A self cleaning power driven rotary lawn mower and deck assembly in which grass clippings and debris sticking to the underside of the deck assembly are removed solely by the rotating action of the lawn mower blade comprising:

metal pins each having a head and a shank projecting towards said deck mounted on opposite sides of the central opening which mounts the blade on the power motor of the mower to permit balanced rotation of said blade;

said flexible mounting means including a cap surrounding said head, an elastic grommet in said cap, and an opening permitting whip movement of the shank to about 15° on each side of the normal perpendicular extension of said shank; and,

the tip of said shank extending to about 1/4 inch from the underside of said deck whereby whipping movement at the shank ends removes the debris from the deck;

A mower blade and deck assembly as claimed in claim 1 wherein said flexible mounting means includes a strap which secures the cap to said blade.

A mower blade and deck assembly as claimed in claim 1 wherein said flexible mounting means includes a strap welded to said blade.

A mower blade and deck assembly as claimed in claim 3 wherein said cap is welded to the top of said blade.

A mower blade and deck assembly claimed in claim 3 wherein said cap is welded to the bottom of said blade and said blade is bored to permit said shank to extend from the underside of the blade through the top and towards the deck.

A mower blade and deck assembly as claimed in claim 3 wherein the deck is at the side and the mower is an edge trimmer.

US05/571,490 1975-04-24 1975-04-24 Self cleaning rotary lawn mower blade and deck assembly Expired. Lifetime US3959955A ( en )

Applications Claiming Priority (1)

Family Applications (1)

Patent Citations (11)

Checklist for cleaning your Husqvarna Automower®

Cleaning the charging station

Clean the charging station regularly.

Disconnect the power supply unit.
Clean any grass, leaves. twigs or other objects that may impede docking from the charging station.
Use a damp cloth and, if necessary, a mild soap solution to clean the surface of the charging station.Please note! Never use a high-pressure washer or running water to clean the charging station. Do not use solvents for cleaning.
Inspect the contact plates and clean using a fine grade emery cloth if necessary.
Use Automower® Care Shine spray to polish the plastic details.

Easy cleaning with running water

If you have one of the Automower® models below, you can wash the exterior and underneathof your robotic lawn mower with running water, for example using a garden hose. The charging station of the NERA models can also be cleaned with running water. For other models, do not use running water to clean the charging station.

Never use a high-pressure washer to clean the robotic lawn mower or the charging station.

The following products can be cleaned using running water:

The body of these Automower® models can easily be removed for easy cleaning and access everywhere.

Automower® Cleaning Maintenance kit

Automower® Cleaning Maintenance kit makes cleaning and maintaining your Automower® robotic lawn mower easy.

Two special brushes, one has a very slim and steep shape and the other is a small brush with a scraper for removing grass and dirt.
One screwdriver for changing cutting blades.
One abrasive pad to clean the connectors on the mower and charging station.
One towel.
One bottle of Automower® Care Shine spray to make plastic parts shiny.

How to Clean Your Lawnmower Deck and Blade with BKF

Knowing how to clean your lawnmower deck and blade is essential. It’s summertime, the flowers are in bloom, the birds singing, the cicadas are … cicada-ing, and the grass is growing. It seems like every week; it needs to be mowed again. (According to experts, depending on your climate, rainfall, and type of grass, it needs cut every 5 to 7 days). With all that mowing, your lawnmower is bound to get dirty, grimy, and clumped up with decomposing grass. That’s where BKF can help.

How to Clean Your Lawnmower Deck and Blade

Dirty equipment of any kind can lead to problems. If you have a residential lawnmower, you know how grimy the mower deck can get. Left uncleaned, grass will build up, creating problems. Not only can the grass and grime impede the operation of the mower, generating performance issues, but it can also structurally damage the mower deck and blade, causing permanent damage.

Here’s How to Clean Your Lawnmower Deck with BKF

Empty the mower of all gasoline
Turn the mower on its side, exposing the inside of the deck
Spray the deck thoroughly with a hose. Your garden hose will work fine, no need for a power wash
Clean the interior of the deck with a soft-bristled brush
Dampen the deck using the hose
Spray BKF MORE Spray Foam. Using the foam setting, the cleanser will adhere to both vertical and horizontal sides of the deck.
Allow it to sit for one minute
Use the soft brush to clean and wipe away foam
Rinse with the hose

Knowing how to clean your lawnmower deck and blade helps you avoid, rust, reduced performance, and prevent grass build-up. Keep in mind the longer you wait to clean your deck, the harder it will be to clean.

How Often Should You Clean the Mower Deck?

Most manufactures recommend twice a year. Some suggest spring, fall, and two times during the season. I clean my mower deck every other mowing.

Pro Tip: Lightly spray some vegetable oil onto the deck after cleaning. It makes it more difficult for grass clippings to stick.

Cleaning the Blade

I find it’s easiest to clean the blade while I’m cleaning the deck. Since you’ve already emptied the gas, sat it in its side, and have everything you need. However, if you don’t want to do it simultaneously, here’s the procedure.

Tip the mower on its side
Spray with hose
Spray the blade with BKF MORE Spray Foam.
Let it sit one minute
Use a soft brush to clean
Rinse with hose
Wipe with a soft cloth or paper towel

Pro Tip: While cleaning your mower blade, if you notice any damage such as bending or missing chunks, replace the blade. If it’s cracked, do not use it until the blade is replaced. Do not chance a piece of the blade breaking off during operation.

In this post, we’ve concentrated on how to clean your lawnmower deck and blade because the operating parts of your mower affect the performance of your machine. However, you can use BKF on other parts of your mower.

Although many BKF fans use our products on painted metal surfaces, we don’t recommend it. It’s possible BKF products could dull or fade the finish. If you’re set on trying BKF on your mower’s painted surfaces, do a spot test first on a small out-of-the-way area.

You can use BKF on unpainted metal surfaces and plastic components of your lawn mower.

A clean mower not only looks good and inspires pride, but it also performs at a higher level. Here’s to a clean mower, a beautiful lawn, and a happy summer.

About the Author

Randy Clark is a speaker, coach, and author. He publishes a weekly blog at Randy Clark Leadership.com. Randy is passionate about social media, leadership development, and flower gardening. He’s a beer geek and on weekends (after COVID-19) he can be found fronting the Rock Roll Band Under the Radar. He’s the proud father of two educators; he has four amazing grandchildren and a wife who dedicates her time to helping others. Randy is the author of the Amazon bestseller The New Manager’s Workbook: A crash course in effective management.

How to Clean a Lawn Mower Grass Bag

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A well maintained lawn mower is going to last a long time, and this applies to the grass bag too. Grass bags have a simple but important function, and basic maintenance is all that is needed. In this guide you will find out how to properly clean a lawn mower grass bag.

Turn the lawn mower off, disconnect the bag and remove all the grass clippings. Spray the inside and outside with water and brush the dirt off. Rinse with water and let the bag dry under the sun before reattaching to the lawn mower.

Clean a Lawn Mower Bag Step by Step

The process is very simple and should not take long. Caring and maintaining the bag is a part of lawn mower maintenance and should be done regularly. And as you will see it is very straightforward.

Required Tools and Materials

Air compressor or leaf blower (we prefer the Black and Decker LB700 leaf blower)
Pressure washer or garden hose
Soft brush
Hard steel brush (the Warner brush is fine)
To remove stains on the grass bag, you will need:
Hydrogen peroxide
Baking soda
Dish detergent or vinegar
Spoon
Mixing bowl or container

If you are going to replace the lawn mower spark plug chances are the rest of the machine needs maintenance. While you are at it, might as well clean the bag.

The basic steps are:

Empty the grass bag.
Loosen any stuck debris on the bag.
Pressure wash the bag.
Brush off any remaining dirt and wash again.

Step 4. Loosen Stuck Debris

It is not unusual to see leaves and dirt stuck onto the bag. This will definitely happen if you mow wet grass, but debris, dirt and other stuff clog grass bags during dry days too.

A few bits here and there is not a problem, but if you let it accumulate could lead to performance slowdown. Follow these steps to eliminate stuck materials on lawn mower bags.

Hold the empty bag with one hand over an even surface. Use a leaf blower to blow air on outside of the bag until the debris come off. You may also use an air compressor if it is equipped with a nozzle. No matter what you use, use the lowest setting to avoid ripping the bag.

When the bag exterior is free of dirt, turn it inside out and do the same for the interior. It is important to get rid of as much dirt as possible before hosing it down. You may use a soft brush to scrub stubborn grime off.

Step 5. Water the grass bag

You have two choices: a garden hose or pressure washer. If you opt for a pressure washer, use the lowest psi possible. Increase it only if the remaining dirt will not come off.

Pressure washers are ideal for canvas grass lawn mower bags. They are durable and can handle the water coming from the washer. If yours is made from nylon or other light materials, use a garden hose instead.

The washing process is the same as when you removed the debris from the pores. Start with the exterior then turn the bag inside out to wash the interior. Water the bag well but careful not to apply too much pressure.

Once you are done washing, examine the bag. If it looks dirt free, you are done. Let it dry. If there are still some dirt left, proceed to step 6.

Step 6. Brushing the dirt away

For the remaining dirt, brush it off. Use a toothbrush or any soft brush. Do not use brushes with hard bristles because it could tear the fabric. Scrub thoroughly but carefully.

When you are finished, wash the bag one more time. Repeat the process as you did earlier, start from the outside and then the inside.

The final step is to set the bag down on an even surface and let it dry under the sun. This can take a few hours or more depending on the weather. Turn the bag inside out when you dry so it does not get moldy.

How to Remove Lawn Mower Bag Stains

The method above works fine most of the time, but what if there are stains? Over time, mold and mildew may stick to the bag, giving it an unsightly appearance and smell.

In some instances hosing is enough. If that does not work you can use a pressure washer. But nylon mower bags may not be strong enough to withstand the pressure. A better option is to use a cleaning solution.

How to clean your Husqvarna Automower®

You will need:

Hydrogen peroxide
Baking soda
Dish detergent
Spoon
Mixing bowl or container

Pour the dish detergent into the container and add the hydrogen peroxide. Mix well and add the baking soda to thicken the mix.

Dip your brush into the paste and scrub the stain. Repeat if necessary. Do this for every stain on the bag. Check the interior for any stains and brush them as well. When you are done, let the grass bag dry.

How to Get Rid of Mold on Mower. If mold has built up, you can remove it using vinegar and baking soda. Pour the baking soda into a container and add a spoonful of vinegar. Add more vinegar if you want the solution a bit thicker.

Once the mix has reached the consistency you prefer, dip a piece of cloth into it. Wipe the mold off with this cloth. Keep wiping until the stains are gone then allow the bag to go dry.

I love the outdoors and all the tools for maintaining gardens, yards and lawns. The only thing I am more passionate about is sharing what I know about garden and outdoor equipment.

Sources:

https://patents.google.com/patent/US3959955A/en
https://www.Husqvarna.com/my/learn-and-discover/how-to-regularly-clean-your-Husqvarna-automower/
https://barkeepersfriend.com/how-to-clean-your-lawnmower-deck-and-blade-with-bkf/
https://www.outdoortoolguide.com/how-to-clean-a-lawn-mower-grass-bag/

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