Patent US4107907A successfully refreshed from Google Patents.
US4107907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter blade guard for mowers
Assignee: Individual
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Filing: 1976-08-23
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Granted: 1978-08-22
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Expires: 1996-08-23
Abstract
Abstract A rotary type mower having a rotary cutting blade positioned to be rotated within an open bottom housing in which the blade tips are rotated in close proximity of the inner surface and adjacent the bottom of the housing. Extending about the housing and adjacent its bottom is a safety guard extending outwardly in substantially the same plane as the bottom edge of the housing. Portions of the guard are hinged to be raised to at least a vertical position for allowing the mower to be moved closer to objects that would otherwise not be available to the cutter blade. These hinged portions are placed about the housing at any desirable location and in any predetermined numbers and are operated by means extending to some remote place, such as the guiding handle of the mower or to the steering wheel or steering bar of a riding mower. This moving means is also provided with a lock which locks the hinged portion of the guard in its outwardly extended position.
Inventors
- 👤 Harry T. Rutherford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:41
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/82; A01D34/828; A01D2101/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
203 words
In combination, a wheel-supported rotary type mower having a closed top and an open bottom housing, and wheel-supporting means supporting the mower housing being on front and rear axes for allowing a back and forth manipulating said mower in said back and forth movement, a propeller type cutter blade rotatably supported within said housing in a horizontal plane adjacent the bottom of the housing, and means for rotating said cutter blade, a cutter blade guard fixed to the housing in a substantially horizontal plane, the cutter blade guard being in a plane adjacent the bottom of the housing and below the plane of the rotatable cutter blade, the improvement comprising; said cutter blade guard being fixed to each side of said housing and having a hinged portion wherein the edge of each hinged portion adjacent the housing extends in parallel lines from front to rear of each side of the mower and in planes perpendicular to the axes of the wheel-supporting means, hinged means for connecting each of the said hinged portions to said housing, means for moving the hinged portions of the cutter blade guards between the substantially horizontal and a substantially vertical position and means for remotely operating the moving means.
Claim 2
Dependent Claim
203 words
In combination, a wheel-supported rotary type mower having a closed top and an open bottom housing, and wheel-supporting means supporting the mower housing being on front and rear axes for allowing a back and forth manipulating said mower in said back and forth movement, a propeller type cutter blade rotatably supported within said housing in a horizontal plane adjacent the bottom of the housing, and means for rotating said cutter blade, a cutter blade guard fixed to the housing in a substantially horizontal plane, the cutter blade guard being in a plane adjacent the bottom of the housing and below the plane of the rotatable cutter blade, the improvement comprising; said cutter blade guard being fixed to each side of said housing and having a hinged portion wherein the edge of each hinged portion adjacent the housing extends in parallel lines from front to rear of each side of the mower and in planes perpendicular to the axes of the wheel-supporting means, hinged means for connecting each of the said hinged portions to said housing, means for moving the hinged portions of the cutter blade guards between the substantially horizontal and a substantially vertical position and means for remotely operating the moving means.
Claim 3
Dependent Claim
216 words
In combination, a wheel-supported rotary type mower having a closed top and an open bottom housing, and wheel-supporting means supporting the mower housing being on front and rear axes for allowing a back and forth movement of the mower, and a handle secured to said mower for manipulating said mower in said back and forth movement, a propeller type cutter blade rotatably supported within said housing in a horizontal plane adjacent the bottom of the housing, and means for rotating said cutter blade, a cutter blade guard fixed to the housing in a substantially horizontal plane, the cutter blade guard being in a plane adjacent the bottom of the housing and below the plane of the rotatable cutter blade, the improvement comprising; said cutter blade guard being fixed to at least one side of said housing and having a hinged portion wherein the edge of said hinged portion adjacent the housing extends in a line from front to rear of the side of the mower and in a plane perpendicular to the axes of the wheel-supporting means, hinged means for connecting the said hinged portions to said housing, means for moving the hinged portion of the cutter blade guard between the substantially horizontal and a substantially vertical position and means for remotely operating the moving means.
Claim 4
Dependent Claim
216 words
In combination, a wheel-supported rotary type mower having a closed top and an open bottom housing, and wheel-supporting means supporting the mower housing being on front and rear axes for allowing a back and forth movement of the mower, and a handle secured to said mower for manipulating said mower in said back and forth movement, a propeller type cutter blade rotatably supported within said housing in a horizontal plane adjacent the bottom of the housing, and means for rotating said cutter blade, a cutter blade guard fixed to the housing in a substantially horizontal plane, the cutter blade guard being in a plane adjacent the bottom of the housing and below the plane of the rotatable cutter blade, the improvement comprising; said cutter blade guard being fixed to at least one side of said housing and having a hinged portion wherein the edge of said hinged portion adjacent the housing extends in a line from front to rear of the side of the mower and in a plane perpendicular to the axes of the wheel-supporting means, hinged means for connecting the said hinged portions to said housing, means for moving the hinged portion of the cutter blade guard between the substantially horizontal and a substantially vertical position and means for remotely operating the moving means.
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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) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |