Patent US3558031A successfully refreshed from Google Patents.
US3558031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nail and like magazines
Assignee: Gaston E Marbaix Ltd
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Filing: 1967-12-04
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Granted: 1971-01-26
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Expires: 1987-12-04
Abstract
Abstract There is described feed mechanism for a pneumatic fastener gun, in which an actuator is adapted to contact the surface of the workpiece and thus to operate the intermittent feed of nails which are assembled like a belt and stored in a magazine.
Inventors
- 👤 Malcolm Edwin Hillier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:49
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/001; B25C1/003
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
132 words
In a fastener gun for driving nails into a surface, means for feeding the foremost nail of a belt of interconnected nails to a location of the gun at which nails are driven, a pawl arranged so as to engage the foremost nail, means for moving said pawl in one sense of direction and thereby to move said foremost nail toward said location, and actuator means adapted to be moved by the positioning of the gun against the surface and mechanically to transmit resultant movement to the pawl in the opposite sense of direction for engaging the pawl with the next nail, whereby the nails are fed in steps, one at a time, said actuator means being energized entirely in response to movements of the gun toward and away from the surface.
Claim 2
Dependent Claim
132 words
In a fastener gun for driving nails into a surface, means for feeding the foremost nail of a belt of interconnected nails to a location of the gun at which nails are driven, a pawl arranged so as to engage the foremost nail, means for moving said pawl in one sense of direction and thereby to move said foremost nail toward said location, and actuator means adapted to be moved by the positioning of the gun against the surface and mechanically to transmit resultant movement to the pawl in the opposite sense of direction for engaging the pawl with the next nail, whereby the nails are fed in steps, one at a time, said actuator means being energized entirely in response to movements of the gun toward and away from the surface.
Claim 3
Dependent Claim
41 words
In a gun according to claim 1, said feeding means being adapted to feed the nails in coplanar fashion to said location, and said means for moving said pawl being adapted to move the pawl in the plane of the nails.
Claim 4
Dependent Claim
21 words
In a gun according to claim 1, said means for moving said pawl in one sense of direction comprising a spring.
Claim 5
Dependent Claim
31 words
In a gun aCcording to claim 1, there being a second pawl arranged to engage the nail behind the foremost nail and being coupled to the first-mentioned pawl for movement therewith.
Claim 6
Dependent Claim
46 words
In a gun according to claim 4, said pawls being supported upon a pivoted lever, and there being a unidirectional connection between said lever and the actuator means, and further comprising spring-urged detent means for engaging a nail of the belt to prevent reverse movement thereof.
Claim 7
Dependent Claim
26 words
In a gun according to claim 1, said pawl being duplicated so that two pawls engage the foremost nail at points spaced along the length thereof.
Claim 8
Dependent Claim
24 words
In a gun according to claim 1, said gun having a bump valve and means for operating the bump valve from said actuator means.
Claim 9
Dependent Claim
37 words
In a gun according to claim 7, said bump valve being adapted to move outward from the gun by air pressure applied to the gun and being adapted to move said actuator means outward from the gun.
Claim 10
Dependent Claim
60 words
In a gun according to claim 1, said pawl being carried by a lever and said means for moving said pawl in one sense of direction comprising a spring for moving said lever, said gun further comprising a spring-urged detent adapted to lock said lever against movement whenever the lever moves to a position corresponding to emptiness of the gun.
Claim 11
Dependent Claim
18 words
In a gun according to claim 9, said spring-urged detent also being adapted to lock said actuator means.
Claim 12
Dependent Claim
22 words
In a gun according to claim 1, a magazine adapted to contain said nails and deliver the same to said feeding means.
Claim 13
Dependent Claim
49 words
In a gun according to claim 11, said feeding means and said magazine being pivotally connected to the gun and said magazine having a belt container adapted to be made accessible for loading by swinging of the magazine and feeding means relative to the gun about the said connection.
Claim 14
Dependent Claim
43 words
In a gun according to claim 12, said means for moving said pawl in one sense of direction comprising a tension spring anchored to the gun and offset from said pivot connection so as to be relaxed or tensed by the said swinging.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |