Patent US3670941A successfully refreshed from Google Patents.
US3670941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable guard and guide for nailer
Assignee: Individual
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Filing: 1970-03-02
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Granted: 1972-06-20
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Expires: 1990-03-02
Abstract
Abstract A guide and guard plate pivoted on the head of a driver for nails or staples projects beyond the head for engagement with an edge of a crate, for example, to guide the driver head for inserting fasteners along the margin of the work. In such projected position the plate shields the safety prongs from being depressed inadvertently to condition the driver for operation. The plate can be swung into retracted position for face nailing spaced farther from the work edge by grasping a handle on it, and a spring-tensioned strip attached to the plate will return it to projected position when the handle is released.
Inventors
- 👤 Fred I Grinnell
- 👤 Clark J Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:55
CPC Classifications
B; B25; B25C; B25C7/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
159 words
In a fastener driver having a driver body, a fastener magazine carried by the body and a driver head carried by the body, receiving fasteners from the magazine and having an aperture defining a predetermined path along which fasteners to be driven are discharged, the improvement comprising guide and guard means offset from such predetermined path defined by the fastener discharge aperture transversely of such path so as to leave the fastener discharge path through and beyond the aperture unobstructed by said guide and guard means, and pivot means offset from such predetermined path defined by the fastener discharge aperture, extending transversely of such path and mounting said guide and guard means for swinging between a projected position projecting beyond the discharge end of the fastener discharge aperture at one side of said pivot means and a retracted position located rearwardly of the discharge end of the fastener discharge aperture and at the opposite side of said pivot means.
Claim 2
Dependent Claim
159 words
In a fastener driver having a driver body, a fastener magazine carried by the body and a driver head carried by the body, receiving fasteners from the magazine and having an aperture defining a predetermined path along which fasteners to be driven are discharged, the improvement comprising guide and guard means offset from such predetermined path defined by the fastener discharge aperture transversely of such path so as to leave the fastener discharge path through and beyond the aperture unobstructed by said guide and guard means, and pivot means offset from such predetermined path defined by the fastener discharge aperture, extending transversely of such path and mounting said guide and guard means for swinging between a projected position projecting beyond the discharge end of the fastener discharge aperture at one side of said pivot means and a retracted position located rearwardly of the discharge end of the fastener discharge aperture and at the opposite side of said pivot means.
Claim 3
Dependent Claim
34 words
In the fastener driver defined in claim 1, a handle carried by the guide and guard means which can be grasped for swinging such means away from its projected position into its retracted position.
Claim 4
Dependent Claim
36 words
In the fastener driver defined in claim 1, the guide and guard means including a plate disposed offset from and substantially parallel to the predetermined fastener discharge path defined by the aperture in the driver head.
Claim 5
Dependent Claim
67 words
In the fastener driver defined in Claim 1, the driving head having a safety prong projectible therefrom and reciprocable to control the actuation of the driver, the pivot means extending transversely of the direction of reciprocation of the safety prong, and the guide and guard means projecting beyond said safety prong in its extended position when the guide and guard means is disposed in its projected position.
Claim 6
Dependent Claim
169 words
In a fastener driver having a driver body, a fastener magazine carried by the body and a driver head carried by the body, receiving fasteners from the magazine and having an aperture defining a predetermined path along which fasteners to be driven are discharged, the improvement comprising guide and guard means offset from such predetermined path defined by the fastener discharge aperture transversely of such path so as to leave the fastener discharge path through and beyond the aperture unobstructed by said guide and guard means, said guide and guard means including a plate disposed offset from and substantially parallel to the predetermined path of fastener discharge defined by the aperture in the driver head and projecting beyond the discharge end of the fastener discharge aperture and means mounting said guide and guard means plate for movement relative to the driver head between the position projecting beyond the discharge end of the fastener discharge aperture and a retracted position rearwardly of the discharge end of the fastener discharge aperture.
Claim 7
Dependent Claim
169 words
In a fastener driver having a driver body, a fastener magazine carried by the body and a driver head carried by the body, receiving fasteners from the magazine and having an aperture defining a predetermined path along which fasteners to be driven are discharged, the improvement comprising guide and guard means offset from such predetermined path defined by the fastener discharge aperture transversely of such path so as to leave the fastener discharge path through and beyond the aperture unobstructed by said guide and guard means, said guide and guard means including a plate disposed offset from and substantially parallel to the predetermined path of fastener discharge defined by the aperture in the driver head and projecting beyond the discharge end of the fastener discharge aperture and means mounting said guide and guard means plate for movement relative to the driver head between the position projecting beyond the discharge end of the fastener discharge aperture and a retracted position rearwardly of the discharge end of the fastener discharge aperture.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |