US4050224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mowing implement
Assignee: Multinorm BV
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Filing: 1975-07-21
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Granted: 1977-09-27
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Expires: 1995-07-21
Abstract
Abstract In a mowing implement, wherein mowing members are rotatably journalled above a housing accommodating a driving gear, stones may be jammed between the mowing members and the housing. Damage of the mowing implement through stones is avoided in that each mowing member mainly comprises two cutter supports adapted to turn upwardly with respect to the driving member each about a horizontal axis, which is located near the upright rotary axis of the associated driving member.
Inventors
- 👤 Pieter Adriaan Oosterling
- 👤 Hendricus Cornelis VAN Staveren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
177 words
A mowing implement comprising, in combination: an elongate housing adapted to be carried by a powered vehicle for movement over the ground surface with the housing extending transverse to the direction of movement effected by the powered vehicle; gear means disposed within said housing and including at least one drive gear disposed along the length of the housing, said drive gear having a vertical shaft connected thereto and projecting upwardly through said housing, said gear means imparting rotation to said shaft; horizontal pivot means attached to said shaft in closely overlying relation to said housing; a pair of cutter supports pivotally engaged by said pivot means, said cutter supports projecting radially from said shaft and each carrying a cutter member which sweeps a circular path which extends forwardly of said housing, and each cutter support being freely pivotal on said pivot means about a horizontal axis whereby each cutter support is free to deflect upwardly out of the plane of said circular path and away from the top of said housing during operation of the mowing implement.
Claim 2
Dependent Claim
177 words
A mowing implement comprising, in combination: an elongate housing adapted to be carried by a powered vehicle for movement over the ground surface with the housing extending transverse to the direction of movement effected by the powered vehicle; gear means disposed within said housing and including at least one drive gear disposed along the length of the housing, said drive gear having a vertical shaft connected thereto and projecting upwardly through said housing, said gear means imparting rotation to said shaft; horizontal pivot means attached to said shaft in closely overlying relation to said housing; a pair of cutter supports pivotally engaged by said pivot means, said cutter supports projecting radially from said shaft and each carrying a cutter member which sweeps a circular path which extends forwardly of said housing, and each cutter support being freely pivotal on said pivot means about a horizontal axis whereby each cutter support is free to deflect upwardly out of the plane of said circular path and away from the top of said housing during operation of the mowing implement.
Claim 3
Dependent Claim
47 words
A mowing implement as defined in claim 1 wherein each cutter support is identical to the other and each includes a base portion straddling said shaft and presenting ears on opposite sides thereof, said pivot means being in the form of a shaft passing through said ears.
Claim 4
Dependent Claim
32 words
A mowing implement as claimed in claim 1, wherein the width of the cutter supports in the longitudinal direction of their horizontal pivotal axes approximately corresponds with the width of the housing.
Claim 5
Dependent Claim
28 words
A mowing implement as claimed in claim 1 including a stop carried by said shaft for limiting the downward movement of the fastening portion of the cutter support.
Claim 6
Dependent Claim
22 words
A mowing implement as claimed in claim 1, wherein the fastening portion is urged into the normal mowing position by centrifugal force.
Claim 7
Dependent Claim
16 words
A mowing implement as claimed in claim 1, wherein said pair of cutter supports are identical.
Claim 8
Dependent Claim
22 words
A mowing implement as claimed in claim 1 wherein said pivot means provides a common, central, horizontal axis for both cutter supports.
Claim 9
Dependent Claim
19 words
A mowing implement as claimed in claim 1, wherein each cutter support is made from a spring steel sheet.
Claim 10
Dependent Claim
39 words
A mowing implement as claimed in claim 8, wherein each cutter support includes an upper sheet and a lower sheet and each cutter member is arranged between the upper sheet and the lower sheet of its associated cutter support.
Claim 11
Dependent Claim
36 words
A mowing implement as claimed in claim 9 including an upright pin extending between the upper sheet and the lower sheet of each cutter support and each cutter member is pivotally carried by an associated pin.
Claim 12
Dependent Claim
31 words
A mowing implement as claimed in claim 9, wherein each upper sheet and lower sheet of a cutter support are resilient whereby they may be spread apart for replacing each cutter.
Claim 13
Dependent Claim
25 words
A mowing implement as claimed in claim 3, wherein each cutter support in its normal mowing position engages said stop with a predetermined minimum force.
Claim 14
Dependent Claim
29 words
A mowing implement as claimed in claim 1, wherein a crop separator is arranged on said shaft and projects upwardly therefrom to allow said cutter supports to deflect upwardly.
Claim 15
Dependent Claim
24 words
A mowing implement as claimed in claim 1, wherein a crop separator is arranged on one of the cutter supports and is secured thereto.
Claim 16
Dependent Claim
22 words
A mowing implement as claimed in claim 1, wherein at least two separate crop separating elements are arranged on the cutter supports.
Claim 17
Dependent Claim
32 words
A mowing implement as claimed in claim 15, wherein two separate crop separating elements are arranged on the cutter supports, said crop separating elements are each in the form of a bar.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |