US3575332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrel retention means for power-actuated tools
Assignee: Illinois Tool Works Inc
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Filing: 1968-05-29
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Granted: 1971-04-20
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Expires: 1988-05-29
Abstract
Abstract A power-actuated fastening tool having a housing in which a barrel is telescopically received for movement between a breechopen and a breech-closed position. At least one recess is provided on the barrel member into which a detent member, mounted on the housing, extends to releasably hold the barrel adjacent its breech-closed position.
Inventors
- 👤 Lawrence J Brunelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:15
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/08; B25C1/10; B25C1/14; B25C1/143
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
In a power-actuated tool, housing means, barrel means telescopically received within said housing means for movement between a breech-open and a breech-closed position, said barrel having at least two diametrically opposed recesses in its outer surface, said housing means having a circumferentially extending groove in its outer surface, a flat band spring mounted in said groove and having two end portions, one end portion being turned inwardly through an opening in said housing means into engagement with one of said recesses and the other of said end portions being turned inwardly through an opening in said housing means into engagement with the other of said recesses when said barrel means is positioned adjacent its breech-closed position to releaseably retain said barrel means from forward movement relative to said housing means.
Claim 2
Dependent Claim
130 words
In a power-actuated tool, housing means, barrel means telescopically received within said housing means for movement between a breech-open and a breech-closed position, said barrel having at least two diametrically opposed recesses in its outer surface, said housing means having a circumferentially extending groove in its outer surface, a flat band spring mounted in said groove and having two end portions, one end portion being turned inwardly through an opening in said housing means into engagement with one of said recesses and the other of said end portions being turned inwardly through an opening in said housing means into engagement with the other of said recesses when said barrel means is positioned adjacent its breech-closed position to releaseably retain said barrel means from forward movement relative to said housing means.
Claim 3
Dependent Claim
30 words
The power-actuated tool of claim 1 wherein the rearward end of each of said recesses is tapered and each of said end portions of said spring member has rounded corners.
Claim 4
Dependent Claim
30 words
The power-actuated tool of claim 2 wherein said housing means includes an ejection port, said end portions being turned inwardly toward each other over opposite sides of said ejection port.
Claim 5
Dependent Claim
75 words
The power-actuated tool of claim 1 further including a cartridge-receiving chamber positioned at the breech end of said barrel means, and extractor means mounted in said housing means and operable to eject a cartridge case upon movement of said barrel means from its breech-closed to its breech-open position, said recesses and said spring member being positioned to releasably hold said barrel means from movement toward its breecH-open position to prevent ejection of a cartridge case.
Claim 6
Dependent Claim
86 words
The power-actuated tool of claim 1 further including a cartridge-receiving chamber positioned at the breech end of said barrel means, firing pin means positioned in said housing means, cocking means for engagement by said barrel means during a portion of the movement of said barrel means into its breech-closed position to cock said firing pin means, said recesses and said spring member being positioned to releasably hold said barrel means from movement from a position just before it engages said cocking means to its breech-open position.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |