Patent US1874623A successfully refreshed from Google Patents.
Patent US3916606A successfully refreshed from Google Patents.
US3916606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary mower
Assignee: Case LLC
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Filing: 1970-11-04
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Granted: 1975-11-04
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Expires: 1990-11-04
Abstract
Abstract A mower such as for mounting on a tractor, having multiple cutter blades mounted on vertical axes and arranged in a line leading to a side discharge opening, the cutter blades rotating at progressively greater tip speeds toward the discharge opening.
Inventors
- 👤 Jr Andrew Brudnak
- 👤 Jerrold A Isaacson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:44
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/685; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
A mower adapted to be moved along the ground comprising a hood having an open bottom and a depending side wall surrounding the area covered by the hood except a lateral discharge opening and providing a reference side remote from said opening, cutter means in the hood comprising at least three impact cutters spaced linearly of a generally transverse path extending downstream from said reference side to the discharge opening, each cutter of said cutter means being adapted to cut plants thereahead within a portion of said path respectively registering therewith and to advance the plants cut thereby downstream into the path portion registering with the cutter disposed next adjacently thereto downstream of said path and for ultiMate discharge of the cut plants through said opening, and means for operating the cutters at progressively increased effective speeds from said reference side toward said discharge opening for accelerating the movement of the cut plants from successive cutters and toward said discharge opening by impacting at increasing speeds against the successively transferred plants.
Claim 2
Dependent Claim
171 words
A mower adapted to be moved along the ground comprising a hood having an open bottom and a depending side wall surrounding the area covered by the hood except a lateral discharge opening and providing a reference side remote from said opening, cutter means in the hood comprising at least three impact cutters spaced linearly of a generally transverse path extending downstream from said reference side to the discharge opening, each cutter of said cutter means being adapted to cut plants thereahead within a portion of said path respectively registering therewith and to advance the plants cut thereby downstream into the path portion registering with the cutter disposed next adjacently thereto downstream of said path and for ultiMate discharge of the cut plants through said opening, and means for operating the cutters at progressively increased effective speeds from said reference side toward said discharge opening for accelerating the movement of the cut plants from successive cutters and toward said discharge opening by impacting at increasing speeds against the successively transferred plants.
Claim 3
Dependent Claim
37 words
The invention according to claim 1 and one of the cutters being disposed adjacent to the discharge opening and delivering the plants directly therethrough, and said cutters developing a cut plant-entraining air stream toward said discharge opening.
Claim 4
Dependent Claim
72 words
A mower according to claim 2 wherein the cutters are three in number and arranged in a triangular pattern with the center one positioned forwardly and the other two to the side and rearwardly of the center one, and one of the side cutters being the terminal one adjacent said discharge opening, and flow of the air stream and conveyance of the cut plants is directed generally laterally from said terminal cutter.
Claim 5
Dependent Claim
53 words
A mower according to claim 1 in which the cutters are mounted on vertical shafts extending above the hood, and pulleys secured to the upper ends of the shafts, and common power transmitting means interconnecting the pulleys, the pulleys being of respective sizes corresponding to the different effective speeds of the cutter blades.
Claim 6
Dependent Claim
72 words
A mower according to claim 4 wherein the cutters are three in number and include a relatively large center one and relatively small side ones flanking the center one, and the small cutter remote from the discharge opening being driven at the slowest peripheral speed, the large cutter blade being driven at a faster peripheral speed and the other side blade adjacent to the discharge opening being driven at fastest peripheral speed.
Claim 7
Dependent Claim
68 words
The invention according to claim 1 and said cutters comprising a pair of short length side cutters and a long length center cutter, one of said side cutters being adjacent to said reference side and the other of the side cutters being adjacent to the discharge opening, and the center cutter extending forwardly of the side cutters, and the effective speeds being at the tips of said cutters.
References Cited (Backward Citations)
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US3107472A
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US3263406A
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US3245209A
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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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |