US3649828A - Adjustable wheel bracket assembly - Google Patents

Adjustable wheel bracket assembly Download PDF

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Publication number
US3649828A
US3649828A US49421A US3649828DA US3649828A US 3649828 A US3649828 A US 3649828A US 49421 A US49421 A US 49421A US 3649828D A US3649828D A US 3649828DA US 3649828 A US3649828 A US 3649828A
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United States
Prior art keywords
lever
crank
assembly
backup plate
clamp
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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
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US49421A
Inventor
Warren H Price
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Toro Co
GILSON BROS Co
Original Assignee
Gilson Brothers Co
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Publication of US3649828A publication Critical patent/US3649828A/en
Assigned to GENERAL ELECTRIC CREDIT CORPORATION 8131 LBJ FREEWAY SUITE 180 DALLAS TEXAS 75251 reassignment GENERAL ELECTRIC CREDIT CORPORATION 8131 LBJ FREEWAY SUITE 180 DALLAS TEXAS 75251 SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GILSON BROTHERS COMPANY A CORP OF DE
Assigned to LAWN-BOY, INC. reassignment LAWN-BOY, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GILSON BROTHERS COMPANY
Assigned to GILSON BROTHERS COMPANY reassignment GILSON BROTHERS COMPANY RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). RECORDED NOVEMBER 13, 1984 AT REEL 4335 FRAMES 243-254 Assignors: GENERAL ELECTRIC CREDIT CORPORATION, A NY CORP.
Assigned to OUTBOARD MARINE CORPORATION, A CORP. OF DE reassignment OUTBOARD MARINE CORPORATION, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LAWN-BOY, INC., A DE CORP.
Anticipated expiration legal-status Critical
Assigned to LAWN-BOY INC., A CORP OF DELAWARE reassignment LAWN-BOY INC., A CORP OF DELAWARE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OUTBOARD MARINE CORPORATION,
Assigned to TORO COMPANY, THE reassignment TORO COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAWN-BOY INC.
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/74—Cutting-height adjustment
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D2101/00—Lawn-mowers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y10T403/32319—At selected angle including pivot stud
    • Y10T403/32327—At selected angle including pivot stud including radially spaced detent or latch component
    • Y10T403/32361—Engaging recess in radial face
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y10T74/20612—Hand
    • Y10T74/20618—Jointed

Definitions

  • the spring lever is provided with a warp, such as a conical offset, near the inner end of the lever where it engages the crank.
  • the lever and crank are embraced by a clamp by which axial pressure is exerted against the warp, thus to tension the warp and press the lever against the crank. This tension or spring bias eliminates play and takes up tolerances in the assembly.
  • FIG. 1 is a perspective view on a reduced scale of a rotary mower which is typical example of a wheeled device to which the invention is applicable.
  • FIG. 2 is a side elevation of an adjustable wheel bracket assembly embodying the invention.
  • FIG. 3 is a vertical cross section taken along the line 33 of F IG. 2.
  • FIG. 4 is an exploded perspective view of the wheel crank, spring lever, clamp bushing and clamp bolt.
  • FIG. 5 is an enlarged cross section of the hub portion of the assembly prior to exerting clamping pressure on the shouldered bushing.
  • FIG. 6 is a cross section similar to that shown in FIG. 5, but showing the parts after clamping pressure is exerted on the bushing.
  • the adjustable wheel bracket assembly of the present invention is typically applied to each of the four wheels 10 of the rotary mower shown in FIG. 1.
  • the assembly 12 comprises a backup plate 13 which is mounted fixedly to the skirt ll of the mower deck, as shown in FIG. 3.
  • the deck skirt 11 typically has an opening 14 through which a tang 15 on the backup plate 13 projects, thus to key the backup plate 13 in secure proper position with respect to the skirt deck 11.
  • the backup plate 13 is provided with a series of concentric bosses, namely, an inner boss 16, an intermediate boss 17, and an outer boss 18. These bosses face the swingable parts of the assembly, for purposes to be hereinafter described.
  • crank 22 is made of stiff, heavy gauge steel, with an oblique intermediate portion 20.
  • the inner end of crank 22 has a central opening 23 and peripheral locking lugs 24.
  • the locking lugs 24 engage in corresponding locking apertures 25 near the inner end of a spring steel lever 26.
  • Lever 26 is relatively flexible and has a handle 29 at its outer end. At its inner end lever 26 has an opening 27 of substantially the same size as the opening 23 in crank 22.
  • crank lugs 24 in the lever apertures 25 couple the crank 22 and lever 26 so that these parts may be swung as a unit about the axis ofa mounting bolt 28 on which the parts are mounted to the backup plate 13 and deck skin 11, as shown in FIG. 3.
  • a bushing 31 shouldered at 33 supports the assembled crank 22 and spring lever 26 on the mounting bolt 28.
  • the end face 32 of bushing 31 seats against the boss 16 of backup plate 13 and bushing shoulder 33 seats against the inner end of the lever 26.
  • the lever 26 is provided about its opening 27 with a conical offset or warp 35.
  • Warp 35 is of sufficient depth of offset so that when the inner ends of the crank 22 and the lever 26 are placed into face contact prior to tightening the clamp bolt 28, as shown in FIG. 5, the spacing X between the crank 22 and the bottom of the warp 35 will be on the order of 0.0300.040 inch. In the FIG. 5 position of the parts, there will also be a spacing indicated at "Z in FIG. 5 between the end face 32 of the bushing 31 and the boss 16 of the backup plate 13.
  • Clamping pressure is developed on the warp 35 by the mounting bolt 28 and bushing 31.
  • Clamp bolt 28 has its head 36 engaged with the bushing 31 and has a nut 37 engaged with washers 40, 41 which intervene between the nut 37 and the inner surface of the deck skirt 1].
  • the height of the wheel 10 is adjusted by springing flexible lever 27 to its broken-line position shown in FIG. 3 and swinging the lever and crank about the axis of mounting bolt 28. This action swings wheel axle 21 to a higher or lower position with respect to ground.
  • Lever 26 is held in any selected position by one or another of the detents 42 which project from plate 13 and which selectively engage in the detent opening 43 in the lever 26.
  • an adjustable wheel bracket assembly including a relatively stiff wheel axle crank, a relatively flexible adjusting lever keyed to the crank, a backup plate and detents with respect to which the lever is flexed in the course of adjusting lever position
  • the improvement to bias the lever and crank together under tension and thus to take up tolerance and eliminate play in the assembly comprising a clamp for pressing the lever and crank together, said lever having a warp yieldable under clamp pressure to create tension in the lever and bias the assembly together without play between the assembled parts, said clamp comprising a bushing having an end face which engages the backup plate and a shoulder spaced from said face and in engagement with one of said crank and lever.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

An adjustable wheel bracket assembly which includes a relatively stiff wheel axle crank and a relatively flexible spring steel adjusting lever keyed to the crank is provided with tension producing mechanism to take up the tolerance and eliminate play in the assembly. The tension producing mechanism comprises a warp formed in the spring steel lever and a clamp to exert pressure on the warp and thus create tension in the system to hold the assembly together without play.

Description

Price States Patent [54] ADJUSTABLE WHEEL BRACKET ASSEMBLY [72] Inventor: Warren H. Price, Sheboygan, Wis. [73] Assignee: Gilson Bros. Co., Plymouth, Wis. [22] Filed: June 24, 1970 [2]] Appl. No.: 49,421
[52] US. Cl ..280/43.17, 29/446, 29/526, 74/524, 287/99, 287/101 [51] Int. Cl ..B62d 21/18 [58] Field ofSearch ..280/43.l7; 151/38; 248/73, 248/74; 287/101, 14, 99; 74/524; 29/446, 526
[56] References Cited UNITED STATES PATENTS 2,503,884 4/1950 Noble et al. ..29/526 5] Mar. 14, 1972 Primary Examiner-Benjamin Hersh Assistant Examiner-Robert R. Song AttorneyWheeler, House & Wheeler [57] ABSTRACT An adjustable wheel bracket assembly which includes a relatively stiff wheel axle crank and a relatively flexible spring steel adjusting lever keyed to the crank is provided with tension producing mechanism to take up the tolerance and eliminate play in the assembly. The tension producing mechanism comprises a warp formed in the spring steel lever and a clamp to exert pressure on the warp and thus create tension in the system to hold the assembly together without play.
3 Claims, 6 Drawing Figures BACKGROUND OF THE INVENTION An adjustable wheel bracket having a crank for an eccentrically mounted wheel and a spring lever by which the crank is adjusted is generally old. However, in prior devices of this type, considerable play develops between the crank and the spring lever, both because of manufacturing tolerances in part size and because of wear which develops during use. Conventional means for eliminating play, such as a wave washer between parts, have not proven satisfactory.
SUMMARY OF THE INVENTION According to the present invention, play is eliminated between the parts without the need to resort to wave washers or other extraneous and additional elements. The spring lever is provided with a warp, such as a conical offset, near the inner end of the lever where it engages the crank. The lever and crank are embraced by a clamp by which axial pressure is exerted against the warp, thus to tension the warp and press the lever against the crank. This tension or spring bias eliminates play and takes up tolerances in the assembly.
Other objects, features, and advantages of the invention will appear from the disclosure.
DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view on a reduced scale of a rotary mower which is typical example of a wheeled device to which the invention is applicable.
FIG. 2 is a side elevation of an adjustable wheel bracket assembly embodying the invention.
FIG. 3 is a vertical cross section taken along the line 33 of F IG. 2.
FIG. 4 is an exploded perspective view of the wheel crank, spring lever, clamp bushing and clamp bolt.
FIG. 5 is an enlarged cross section of the hub portion of the assembly prior to exerting clamping pressure on the shouldered bushing.
FIG. 6 is a cross section similar to that shown in FIG. 5, but showing the parts after clamping pressure is exerted on the bushing.
DESCRIPTION OF PREFERRED EMBODIMENTS Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention which may be embodied in other specific structure. The scope of the invention is defined in the claims appended hereto.
The adjustable wheel bracket assembly of the present invention is typically applied to each of the four wheels 10 of the rotary mower shown in FIG. 1. The assembly 12 comprises a backup plate 13 which is mounted fixedly to the skirt ll of the mower deck, as shown in FIG. 3.
The deck skirt 11 typically has an opening 14 through which a tang 15 on the backup plate 13 projects, thus to key the backup plate 13 in secure proper position with respect to the skirt deck 11.
The backup plate 13 is provided with a series of concentric bosses, namely, an inner boss 16, an intermediate boss 17, and an outer boss 18. These bosses face the swingable parts of the assembly, for purposes to be hereinafter described.
The vehicle wheel 10 is mounted on a stub axle 21 which projects laterally from the outer end of a swingable crank 22. Crank 22 is made of stiff, heavy gauge steel, with an oblique intermediate portion 20. The inner end of crank 22 has a central opening 23 and peripheral locking lugs 24. The locking lugs 24 engage in corresponding locking apertures 25 near the inner end of a spring steel lever 26. Lever 26 is relatively flexible and has a handle 29 at its outer end. At its inner end lever 26 has an opening 27 of substantially the same size as the opening 23 in crank 22.
The engagement of the crank lugs 24 in the lever apertures 25 couple the crank 22 and lever 26 so that these parts may be swung as a unit about the axis ofa mounting bolt 28 on which the parts are mounted to the backup plate 13 and deck skin 11, as shown in FIG. 3.
A bushing 31 shouldered at 33 (see FIG. 4) supports the assembled crank 22 and spring lever 26 on the mounting bolt 28. The end face 32 of bushing 31 seats against the boss 16 of backup plate 13 and bushing shoulder 33 seats against the inner end of the lever 26. When the parts are assembled, as shown in FIGS. 3, 5 and 6, the inner ends of the crank 22 and the lever 26 are embraced between the shoulder 33 on the bushing 31 and the boss 17 of the backup plate 13.
According to the present invention, the lever 26 is provided about its opening 27 with a conical offset or warp 35. Warp 35 is of sufficient depth of offset so that when the inner ends of the crank 22 and the lever 26 are placed into face contact prior to tightening the clamp bolt 28, as shown in FIG. 5, the spacing X between the crank 22 and the bottom of the warp 35 will be on the order of 0.0300.040 inch. In the FIG. 5 position of the parts, there will also be a spacing indicated at "Z in FIG. 5 between the end face 32 of the bushing 31 and the boss 16 of the backup plate 13.
Clamping pressure is developed on the warp 35 by the mounting bolt 28 and bushing 31. Clamp bolt 28 has its head 36 engaged with the bushing 31 and has a nut 37 engaged with washers 40, 41 which intervene between the nut 37 and the inner surface of the deck skirt 1].
When clamp bolt 28 is tightened, it draws bushing 31 toward the backup plate 13, thus to bottom the end face 32 of bushing 31 against the boss 16, as shown in FIG. 6. At the same time, bushing shoulder 33 draws the lever warp 35 toward the crank 22, against the tension of the spring steel of which the lever is formed. Thus the warp 35 is reduced in depth and the spacing between the warp bottom and the crank 22 is reduced to the spacing Y" indicated in FIG. 6. Spacing Y" is typically in the range of0,0l50.020 inch.
In the course of tightening bolt 28, the warp 35 is stressed to produce tension in the assembly, thus to spring bias the parts together and take up tolerances in the apparatus and eliminate play between the parts.
As is conventional, the height of the wheel 10 is adjusted by springing flexible lever 27 to its broken-line position shown in FIG. 3 and swinging the lever and crank about the axis of mounting bolt 28. This action swings wheel axle 21 to a higher or lower position with respect to ground. Lever 26 is held in any selected position by one or another of the detents 42 which project from plate 13 and which selectively engage in the detent opening 43 in the lever 26.
I claim:
1. In an adjustable wheel bracket assembly including a relatively stiff wheel axle crank, a relatively flexible adjusting lever keyed to the crank, a backup plate and detents with respect to which the lever is flexed in the course of adjusting lever position, the improvement to bias the lever and crank together under tension and thus to take up tolerance and eliminate play in the assembly and comprising a clamp for pressing the lever and crank together, said lever having a warp yieldable under clamp pressure to create tension in the lever and bias the assembly together without play between the assembled parts, said clamp comprising a bushing having an end face which engages the backup plate and a shoulder spaced from said face and in engagement with one of said crank and lever.
2. The assembly of claim 1 in which the backup plate has concentric coaxial inner and outer bosses, the end face of the bushing engaging the inner boss and the other of said crank and handle engaging the outer boss.
3. The assembly of claim 2 in which the clamp further comprises a bolt through said bushing and backup plate.

Claims (3)

1. In an adjustable wheel bracket assembly including a relatively stiff wheel axle crank, a relatively flexible adjusting lever keyed to the crank, a backup plate and detents with respect to which the lever is flexed in the course of adjusting lever position, the improvement to bias the lever and crank together under tension and thus to take up tolerance and eliminate play in the assembly and comprising a clamp for pressing the lever and crank together, said lever having a warp yieldable under clamp pressure to create tension in the lever and bias the assembly together withOut play between the assembled parts, said clamp comprising a bushing having an end face which engages the backup plate and a shoulder spaced from said face and in engagement with one of said crank and lever.
2. The assembly of claim 1 in which the backup plate has concentric coaxial inner and outer bosses, the end face of the bushing engaging the inner boss and the other of said crank and handle engaging the outer boss.
3. The assembly of claim 2 in which the clamp further comprises a bolt through said bushing and backup plate.
US49421A 1970-06-24 1970-06-24 Adjustable wheel bracket assembly Expired - Lifetime US3649828A (en)

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928905A (en) * 1974-07-01 1975-12-30 Triax Co Method of assembly for knock-down storage frame
US4321785A (en) * 1980-12-08 1982-03-30 Ataco Steel Products Co. Wheel height adjuster
US4890951A (en) * 1986-08-13 1990-01-02 Nippon Seiko Kabushiki Kaisha Webbing supporting device
US5249324A (en) * 1992-07-31 1993-10-05 A. J. Giammanco & Associates, Inc. Adjustable wheel assembly for pool vacuums
US5253884A (en) * 1991-12-13 1993-10-19 Gary Landers Roller adjustment means for in line skate
US5374072A (en) * 1991-12-13 1994-12-20 Landers; Gary Roller adjustment system for in-line skates
US5586777A (en) * 1995-06-05 1996-12-24 Wolf; David In line skate with dynamically adjustable wheels
WO1998009499A3 (en) * 1996-09-05 1998-06-25 Scott Thomason Single lever height adjustment mechanism and method for a lawn mower
US5791004A (en) * 1995-03-14 1998-08-11 Colgate-Palmolive Company Floor cleaning device
US6132128A (en) * 1998-06-17 2000-10-17 Prince Corporation Snap-on control member
US6899345B1 (en) 2003-03-26 2005-05-31 John D. Bearden Lawn mower adjustable wheel conversion assembly
US20070107404A1 (en) * 2005-11-03 2007-05-17 Agri-Fab, Inc. Height adjustment system for a lawn maintenance device
US20100037578A1 (en) * 2008-08-15 2010-02-18 Jolliff Brian M Height of cut adjustment mechanism for rotary cutting deck
US20110078990A1 (en) * 2009-10-01 2011-04-07 Tommy Joe Vachal Wheel mounting/height adjustment mechanism and power equipment unit incorporating same
US20130118139A1 (en) * 2011-11-15 2013-05-16 Agri-Fab, Inc. Sweeper height adjustment assembly
US8887480B2 (en) * 2011-12-06 2014-11-18 The Toro Company Walk power mower with height of cut adjustment system having spring arm with replaceable locking pin
US20150037085A1 (en) * 2013-07-31 2015-02-05 Jeffrey D. Carnevali Rotary coupling
US20180027731A1 (en) * 2016-07-28 2018-02-01 Mat Engine Technologies, Llc Wheeled string trimmer mower
US20180103582A1 (en) * 2016-07-28 2018-04-19 Mat Engine Technologies, Llc Wheeled string trimmer mower
US20200120875A1 (en) * 2016-05-16 2020-04-23 Cnh Industrial America Llc Adjustable vanes for use in a cylindrical rotor cage of an agricultural harvester
US11097412B2 (en) * 2019-04-16 2021-08-24 Rekeft Dosky Mechanic's creeper assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503884A (en) * 1947-04-23 1950-04-11 Charles S Noble Blade weeding assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503884A (en) * 1947-04-23 1950-04-11 Charles S Noble Blade weeding assembly

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928905A (en) * 1974-07-01 1975-12-30 Triax Co Method of assembly for knock-down storage frame
US4321785A (en) * 1980-12-08 1982-03-30 Ataco Steel Products Co. Wheel height adjuster
US4890951A (en) * 1986-08-13 1990-01-02 Nippon Seiko Kabushiki Kaisha Webbing supporting device
US5253884A (en) * 1991-12-13 1993-10-19 Gary Landers Roller adjustment means for in line skate
US5374072A (en) * 1991-12-13 1994-12-20 Landers; Gary Roller adjustment system for in-line skates
US5249324A (en) * 1992-07-31 1993-10-05 A. J. Giammanco & Associates, Inc. Adjustable wheel assembly for pool vacuums
US5791004A (en) * 1995-03-14 1998-08-11 Colgate-Palmolive Company Floor cleaning device
US5586777A (en) * 1995-06-05 1996-12-24 Wolf; David In line skate with dynamically adjustable wheels
WO1998009499A3 (en) * 1996-09-05 1998-06-25 Scott Thomason Single lever height adjustment mechanism and method for a lawn mower
US6132128A (en) * 1998-06-17 2000-10-17 Prince Corporation Snap-on control member
US6899345B1 (en) 2003-03-26 2005-05-31 John D. Bearden Lawn mower adjustable wheel conversion assembly
US20070107404A1 (en) * 2005-11-03 2007-05-17 Agri-Fab, Inc. Height adjustment system for a lawn maintenance device
US20100037578A1 (en) * 2008-08-15 2010-02-18 Jolliff Brian M Height of cut adjustment mechanism for rotary cutting deck
US7716907B2 (en) 2008-08-15 2010-05-18 Deere & Company Height of cut adjustment mechanism for rotary cutting deck
US20110078990A1 (en) * 2009-10-01 2011-04-07 Tommy Joe Vachal Wheel mounting/height adjustment mechanism and power equipment unit incorporating same
US7958943B2 (en) 2009-10-01 2011-06-14 Exmark Manufacturing Company, Incorporated Wheel mounting/height adjustment mechanism for a power equipment unit
US20130118139A1 (en) * 2011-11-15 2013-05-16 Agri-Fab, Inc. Sweeper height adjustment assembly
US8887480B2 (en) * 2011-12-06 2014-11-18 The Toro Company Walk power mower with height of cut adjustment system having spring arm with replaceable locking pin
US20150037085A1 (en) * 2013-07-31 2015-02-05 Jeffrey D. Carnevali Rotary coupling
US20200120875A1 (en) * 2016-05-16 2020-04-23 Cnh Industrial America Llc Adjustable vanes for use in a cylindrical rotor cage of an agricultural harvester
US10959379B2 (en) * 2016-05-16 2021-03-30 Cnh Industrial America Llc Adjustable vanes for use in a cylindrical rotor cage of an agricultural harvester
US20180027731A1 (en) * 2016-07-28 2018-02-01 Mat Engine Technologies, Llc Wheeled string trimmer mower
US20180103582A1 (en) * 2016-07-28 2018-04-19 Mat Engine Technologies, Llc Wheeled string trimmer mower
US11097412B2 (en) * 2019-04-16 2021-08-24 Rekeft Dosky Mechanic's creeper assembly

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