US3579965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mowing machine
Assignee: Individual
•
Filing: 1968-12-31
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Granted: 1971-05-25
•
Expires: 1988-12-31
Abstract
Abstract A four-wheel drive mowing machine including a frame having pairs of driven front and rear wheels provided with tires, the width of the tires being substantially greater than the width of the sidewalls. The front wheels are mounted on opposite ends of an axle mounted on the frame for pivotal movement in a substantially vertical plane about the frame central axis and a pair of laterally extending front cutters are supported on the frame on opposite sides of the central axis together with a rear cutter supported on the frame and arranged centrally of the central axis between the rear wheels.
Inventors
- 👤 Johnnie J Musgrove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/43; A01D67/00; A01D75/00; A01D75/30; A01D2101/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
279 words
A rider-steered, four-wheel drive mowing machine comprising, in combination, a frame having a front end, a rear end and a longitudinally extending central axis, a transversely extending front axle member mounted intermediate its ends on said frame adjacent said front end for pivotal movement on said central axis in a substantially vertical plane, a pair of front wheels, means for supporting one of said front wheels on each end of said front axle member for rotation on a horizontal axis and for pivotal movement on an axis extending substantially perpendicular to the axle member, a pair of rear wheels, means for supporting said rear wheels on said frame adjacent said frame rear end in oppositely disposed, transversely spaced relationship for rotation on a horizontal axis, each of said front and rear wheels including a rim of relatively small diameter and a low-pressure, pneumatic tire on said rim, said tire having a width substantially greater than the radial width of the tire sidewall, a pair of transversely aligned, laterally extending front cutters supported on said frame, said front cutters being arranged on opposite sides of said central axis intermediate said front and rear wheels, a transversely extending rear cutter supported on said frame between said rear wheels in centrally aligned relationship with said central axis, power means supported on said frame, means for drivably connecting said power means to said front and rear wheels and to said cutters, an operator seat on said frame intermediate said front and rear wheels and steering means accessible from said operator seat for pivotally moving said front wheels on said perpendicular axis to guide the movement of said mowing machine on a supporting surface.
Claim 2
Dependent Claim
279 words
A rider-steered, four-wheel drive mowing machine comprising, in combination, a frame having a front end, a rear end and a longitudinally extending central axis, a transversely extending front axle member mounted intermediate its ends on said frame adjacent said front end for pivotal movement on said central axis in a substantially vertical plane, a pair of front wheels, means for supporting one of said front wheels on each end of said front axle member for rotation on a horizontal axis and for pivotal movement on an axis extending substantially perpendicular to the axle member, a pair of rear wheels, means for supporting said rear wheels on said frame adjacent said frame rear end in oppositely disposed, transversely spaced relationship for rotation on a horizontal axis, each of said front and rear wheels including a rim of relatively small diameter and a low-pressure, pneumatic tire on said rim, said tire having a width substantially greater than the radial width of the tire sidewall, a pair of transversely aligned, laterally extending front cutters supported on said frame, said front cutters being arranged on opposite sides of said central axis intermediate said front and rear wheels, a transversely extending rear cutter supported on said frame between said rear wheels in centrally aligned relationship with said central axis, power means supported on said frame, means for drivably connecting said power means to said front and rear wheels and to said cutters, an operator seat on said frame intermediate said front and rear wheels and steering means accessible from said operator seat for pivotally moving said front wheels on said perpendicular axis to guide the movement of said mowing machine on a supporting surface.
Claim 3
Dependent Claim
63 words
A mowing machine in accordance with claim 1 wherein said front and rear cutters are of the flail type including a rotatable shaft extending substantially perpendicular to said central axis and a plurality of flails pivotally mounted on said shaft and wherein said means for connecting said power means to said cutters includes means for connecting said power means to said cutter shafts.
Claim 4
Dependent Claim
93 words
A mowing machine in accordance with claim 2 including means for supporting said front cutters for bidirectional pivotal movement between an elevated inoperative position and a cutting position, said supporting means including means for supporting said front cutters for pivotal movement on an axis extending transversely of said frame in substantially parallel relationship with said cutter shafts and means for supporting said front cutters for pivotal movement on an axis extending longitudinally of said frame adjacent said frame central axis and means for positioning said front and rear cutters in said cutting position.
Claim 5
Dependent Claim
91 words
A mowing machine in accordance with claim 3 wherein said positioning means for said front cutters include means on the outer ends of said front cutters engageable with the mowing machine supporting surface for limiting the downward pivotal movement of said front cutters on said longitudinal axis and adjustable means connected to said frame and to each of said front cutters for limiting the downward pivotal movement of said front cutters on said transverse axis to maintain said front cutters in said cutting position during the movement of said mowing machine.
Claim 6
Dependent Claim
55 words
A mowing machine in accordance with claim 3 including means for supporting said rear cutter for pivotal movement between an elevated inoperative position and a cutting position on an axis extending transversely of said frame in substantially parallel relationship with said rear cutter shaft and means for maintaining said rear cutter in said cutting position.
Claim 7
Dependent Claim
42 words
A mowing machine in accordance with claim 5 wherein said means for maintaining said rear cutter in said cutting position include adjustable means connected to said frame and to said rear cutter for limiting the downward pivotal movement of said rear cutter.
Claim 8
Dependent Claim
92 words
A mowing machine in accordance with claim 4 wherein said means on the outer ends of said front cutters include a freely rotatable support wheel on the outer end of each of said front cutters engageable with said supporting surface and including a show member positioned rearwardly of and in elevated relationship with said support wheel on the outer end of each of said front cutters arranged to slidably engage said supporting surface to positively limit the downward pivotal movement of said front cutters on said longitudinal axis to said cutting position.
Claim 9
Dependent Claim
114 words
A mowing machine in accordance with claim 3 wherein said power means includes a motor having an output shaft and wherein said means for connecting said power means to said front and rear wheels and to said cutters include a first clutch having a lever accessible from said operator''s seat connected to said output shaft, first shaft means including a transmission having a lever accessible from said operator''s seat for drivably connecting said front and rear wheels to said motor output shaft through said first clutch and second shaft means including a second clutch having a lever accessible from said operator''s seat for connecting said front and rear cutters to said motor output shaft.
Claim 10
Dependent Claim
99 words
A mowing machine in accordance with claim 8 wherein said steering means include a steering linkage connected to said front wheels for simultaneous pivotal movement of said front wheels on said perpendicular axis with said wheels in substantially parallel relationship, a steering wheel accessible from said operator''s seat and having a shaft connected to said linkage for effecting said pivotal movement of said front wheels and wherein said first shaft means include a universal joint associated with each of said front wheels to maintain said driving connection with said front wheels during said pivotal movement of said front wheels.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |