Patent US3672555A successfully refreshed from Google Patents.
US3672555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nailing tool
Assignee: BUKAMA GmbH
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Filing: 1970-08-19
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Granted: 1972-06-27
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Expires: 1990-08-19
Abstract
Abstract In a portable pneumatic fastener driving device a magazine which receives fasteners joined in a strip is arranged helically around the tool body. The outer wall of the magazine is provided with a longitudinal slot for guiding a spring-loaded slide which effects the feed of the fasteners towards the drive track. The slot is covered by a coil spring wound on a reel which is attached to the slide.
Inventors
- 👤 Jurgen Korth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:33
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/001
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
In a fastener driving tool adapted to be used with a plurality of fasteners in the form of an elongated strip, said tool comprising a body having at one end a driver reciprocating in a drive track to drive said fasteners; the improvement comprising a fastener magazine having a discharge end located adjacent the driver and drive track and spiraling outwardly from said discharge end into a generally helical form and having an opposite loading end which is open to permit endwise insertion of the elongated fastener strip, the entire magazine, including said discharge end and said loading end, being wrapped closely around the body of said tool, a slide movable in said magazine and engageable with the fastener strip to feed the fasteners to said driver, and a spring connected at one end to said slide and its opposite end connected adjacent said driver for urging said slide against the fastener strip.
Claim 2
Dependent Claim
153 words
In a fastener driving tool adapted to be used with a plurality of fasteners in the form of an elongated strip, said tool comprising a body having at one end a driver reciprocating in a drive track to drive said fasteners; the improvement comprising a fastener magazine having a discharge end located adjacent the driver and drive track and spiraling outwardly from said discharge end into a generally helical form and having an opposite loading end which is open to permit endwise insertion of the elongated fastener strip, the entire magazine, including said discharge end and said loading end, being wrapped closely around the body of said tool, a slide movable in said magazine and engageable with the fastener strip to feed the fasteners to said driver, and a spring connected at one end to said slide and its opposite end connected adjacent said driver for urging said slide against the fastener strip.
Claim 3
Dependent Claim
40 words
A tool as in claim 1, wherein said magazine is adapted to receiVe a strip of nails with overlapped heads and parallel shafts, and wherein the helix angle of said magazine runs parallel to the heads of said nail strip.
Claim 4
Dependent Claim
32 words
A tool as in claim 1, wherein said magazine has an outer wall, said outer wall having a generally helical slot therein, said slide fitting in and being guided by said slot.
Claim 5
Dependent Claim
27 words
A tool as in claim 3, wherein said slide has an extension which is wider than said slot, said extension being adapted to engage the fastener strip.
Claim 6
Dependent Claim
51 words
A tool as in claim 4, wherein said extension of said slide has a portion sloping in a direction tangential to the helical magazine and inwardly toward the fastener strip, whereby said slide can be moved easily over a newly inserted strip of fasteners toward said loading end of said magazine.
Claim 7
Dependent Claim
52 words
A tool as in claim 5, wherein stop means is provided at said loading end of said magazine, said stop means being inclined with respect to said helical magazine, said stop means holding the newly inserted fastener strip in said magazine while said slide is moved over the newly inserted fastener strip.
Claim 8
Dependent Claim
46 words
A tool as in claim 1 wherein said magazine is adapted to receive a strip of fasteners with heads and shafts, said heads being arranged in overlapping manner and said shafts being parallel, said slide being adapted to engage only the shafts of said fastener strip.
References Cited (Backward Citations)
US969934A
Cited
US3469758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |