Patent US3612573A successfully refreshed from Google Patents.
US3612573A
Expired / Lapsed
US
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Gang mower
Assignee: ROSEMAN MANUFACTURING COMPANY A CORP OF ILL
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Filing: 1970-04-06
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Granted: 1971-10-12
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Expires: 1990-04-06
Abstract
Abstract A gang mower having a center frame, a right frame and a left side frame. The side frames are adapted to have mowers attached thereto and an additional mower is towed rearwardly of the side frames. The side frames are independently connected to the main frame to permit each side frame to pivot about both a transverse axis and a longitudinal axis while restraining the side frames against movement about vertical axes. The side frames are connected to each other by a spacer bar which is pivotally connected at its opposite ends to the side frames. A boom is supported on the spacer bar and is pivotally connected at its forward end to the main frame. The boom is mounted to move vertically relative to said spacer bar for a limited distance.
Inventors
- 👤 James E Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:02
CPC Classifications
A; A01; A01D; A01D75/00; A01D75/30; A01D75/306
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A gang mower including: a center frame, a left side frame and a right side frame, said side frames formed and adapted to have mowers connected thereto, means independently connecting said side frames to said main frame to permit each side frame to pivot about both a transverse axis and a longitudinal horizontal axis while restraining said side frames against movement about vertical axes, a spacer bar extending between said side frames and pivotally connected at its opposite ends to said side frames, said pivotal axes extending generally longitudinally and horizontally, and means pivotally mounted on said spacer bar and adapted to pull a mower located rearwardly of said side frames.
Claim 2
Dependent Claim
111 words
A gang mower including: a center frame, a left side frame and a right side frame, said side frames formed and adapted to have mowers connected thereto, means independently connecting said side frames to said main frame to permit each side frame to pivot about both a transverse axis and a longitudinal horizontal axis while restraining said side frames against movement about vertical axes, a spacer bar extending between said side frames and pivotally connected at its opposite ends to said side frames, said pivotal axes extending generally longitudinally and horizontally, and means pivotally mounted on said spacer bar and adapted to pull a mower located rearwardly of said side frames.
Claim 3
Dependent Claim
49 words
The structure of claim 1 further characterized in that an elongated boom is pivotally connected at its forward end to said center frame for movement about a transverse horizontal axis and is supported near its midpoint on said spacer bar with said boom extending rearwardly of said spacer bar.
Claim 4
Dependent Claim
22 words
The structure of claim 2 further characterized in that said boom is mounted for limited vertical movement relative to said spacer bar.
Claim 5
Dependent Claim
31 words
The structure of claim 1 further characterized in that means are provided to bias the forward ends of said left side frame and right side frame downwardly towards said center frame.
Claim 6
Dependent Claim
26 words
The structure of claim 4 further characterized in that said biasing means is supported to pivot above a horizontal longitudinal axis relative to said center frame.
References Cited (Backward Citations)
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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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |