US4809489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riding mower
Assignee: Husqvarna AB
•
Filing: 1988-01-14
•
Granted: 1989-03-07
•
Expires: 2008-01-14
Abstract
Abstract The invention relates to a mower comprising a chassis which is provided with an engine. The chassis consists of a front and a rear section each section being provided with a pair of wheels and the front section supports a cutting attachment. The front and at least a part of the rear section are pivotally connected to each other so that they can be turned mainly about a vertical steering axis and about a mainly horizontal swinging axis. The steering axis (29) and the swinging axix (42) is placed considerably closer to the wheel axis of the rear section (13) than the wheel axis of the front section (12) preferably so that the distance (a) between the steering axis (29) and the wheel axis of the rear section (13) is less than 1/3 of the distance (b) between the two wheel axis.
Inventors
- 👤 Rolf A. G. Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:11
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D2034/645; A01D2101/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
175 words
In an engine-driven riding mower having a chassis provided with separate front and rear sections, an engine mounted on said rear section, a cutting attachment supported by said front section and driven by said engine, the improvement comprising a pair of front wheels operatively connected to said front section and a pair of rear driving wheels operatively connected to said rear section, said rear driving wheels having an axis, means for steering said rear driving wheels and including a vertical steering axis about which said rear driving wheels turn, said vertical steering axis being located in the rear of said mower chassis at a distance from the rear wheel axis which is less than 1/3 of the distance between the front and rear wheel axes, and a horizontal swinging axis which is substantially perpendicular to said rear wheel axis, said horizontal swinging axis being placed at said vertical axis location and additionally positioned centrally between said driving wheels, and said engine being provided with an output shaft that is concentric with said vertical steering axis.
Claim 2
Dependent Claim
175 words
In an engine-driven riding mower having a chassis provided with separate front and rear sections, an engine mounted on said rear section, a cutting attachment supported by said front section and driven by said engine, the improvement comprising a pair of front wheels operatively connected to said front section and a pair of rear driving wheels operatively connected to said rear section, said rear driving wheels having an axis, means for steering said rear driving wheels and including a vertical steering axis about which said rear driving wheels turn, said vertical steering axis being located in the rear of said mower chassis at a distance from the rear wheel axis which is less than 1/3 of the distance between the front and rear wheel axes, and a horizontal swinging axis which is substantially perpendicular to said rear wheel axis, said horizontal swinging axis being placed at said vertical axis location and additionally positioned centrally between said driving wheels, and said engine being provided with an output shaft that is concentric with said vertical steering axis.
Claim 3
Dependent Claim
67 words
A riding mower as claimed in claim 1 wherein said rear section is provided with a gear box with a differential gear, a rear shaft for transmitting a driving force to said rear pair of wheels, and a belt wherein the transmission of force between the engine and gear box is created by said belt which is located in the same plane as said horizontal swinging axis.
References Cited (Backward Citations)
NL289954A
Cited
GB478857A
Cited
US2582177A
Cited
US3187821A
Cited
US3110352A
Cited
US3299982A
Cited
US4487006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |