US3913413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety guard structure
Assignee: Individual
•
Filing: 1974-05-06
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Granted: 1975-10-21
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Expires: 1994-05-06
Abstract
Abstract A safety guard structure including a guard member adapted to be interposed between a mechanism such as a punch press and the operator thereof to protect the operator from injury. In one form of the invention the guiding frame for guiding the guard member between its upper and lower positions is swingably connected to the mechanism to be guarded to permit the entire guiding frame to be swung upwardly so as to present no interference when it is desired to modify the mechanism or to change the dies thereof. In another form of the invention the guide structure for the guard member is entirely positioned above the area to be protected so as to present no interference when it is necessary for operators to work around the machine. An interlocking device is provided to prevent operation of the mechanism except when the guard member and its guide structure are in proper operating position.
Inventors
- 👤 Brooks Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:19
CPC Classifications
F; F16; F16P; F16P3/00; F16P3/08; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2193; Y10T74/2198
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A safety guard structure adapted to be interposed between a mechanism and an operator horizontally spaced from said mechanism for protecting said operator, comprising: a generally rectangular guard member, a frame means guiding said guard member for movement from a lower working position with at least a portion of said member registering with a vertically extending area between said mechanism and said operator to an upper position spaced upwardly from said area, and hinge means swingably supporting the upper end of said frame and having an axis of swing outwardly of said mechanism for swinging movement in a vertical plane for an operative position with said frame in working position to an operative position above and outwardly of said area.
Claim 2
Dependent Claim
120 words
A safety guard structure adapted to be interposed between a mechanism and an operator horizontally spaced from said mechanism for protecting said operator, comprising: a generally rectangular guard member, a frame means guiding said guard member for movement from a lower working position with at least a portion of said member registering with a vertically extending area between said mechanism and said operator to an upper position spaced upwardly from said area, and hinge means swingably supporting the upper end of said frame and having an axis of swing outwardly of said mechanism for swinging movement in a vertical plane for an operative position with said frame in working position to an operative position above and outwardly of said area.
Claim 3
Dependent Claim
49 words
A safety guard structure according to claim 1 wherein said frame includes a switch actuator, an electrical circuit for controlling said mechanism including a stationary switch, adapted to be actuated by said actuator when said frame is in said operative position and said member is in said working position.
Claim 4
Dependent Claim
131 words
A safety guard structure adapted to be interposed between a mechanism and an operator horizontally spaced from said mechanism for protecting said operator, comprising: a generally rectangular guard member, a frame guiding said guard member for movement froM a lower working position with at least a portion of said member registering with a vertically extending area between said mechanism and said operator to an upper position spaced upwardly from said area, hinge means swingably supporting the upper end of said frame for swinging movement in a vertical plane from an operative position with said frame in working position to an inoperative position above said area, said guiding means comprises two pairs of horizontally spaced apart bearings with each pair of bearings being vertically spaced and fixedly secured relative to said mechanism.
Claim 5
Dependent Claim
131 words
A safety guard structure adapted to be interposed between a mechanism and an operator horizontally spaced from said mechanism for protecting said operator, comprising: a generally rectangular guard member, a frame guiding said guard member for movement froM a lower working position with at least a portion of said member registering with a vertically extending area between said mechanism and said operator to an upper position spaced upwardly from said area, hinge means swingably supporting the upper end of said frame for swinging movement in a vertical plane from an operative position with said frame in working position to an inoperative position above said area, said guiding means comprises two pairs of horizontally spaced apart bearings with each pair of bearings being vertically spaced and fixedly secured relative to said mechanism.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |