Patent EP0355200A1 successfully refreshed from Google Patents.
US4384507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable sound suppressor for weapon
Assignee: Individual
•
Filing: 1980-08-06
•
Granted: 1983-05-24
•
Expires: 2000-08-06
Abstract
Abstract A sleeve is slidable longitudinally of a can, on a weapon, containing sound suppressing means, between a first position retracted onto the can and a second position extending forwardly from the can with only adjacent ends lapping, to enhance sound suppressing action when the sleeve is moved to the second extended position. A longitudinally extending slot in the sleeve, with laterally extending notches, and a stop disposed in the slot to limit movement of the sleeve on the can. A knob with lock means to secure the stop in a selected notch of the slot.
Inventors
- 👤 Charles A. Finn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
F; F41; F41A; F41A21/00; F41A21/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
The improvement in a sound suppressor extending forwardly from the barrel of a weapon, comprising: (a) said suppressor having a generally cylindrically shaped can having interior sound suppressing means, (b) a bored entrance end plug on said can and means securing said can to said barrel of said weapon, (c) a tubular sleeve fitted on said can and slidable longitudinally of said can between a first position retracted onto said can and a second position extending forwardly from said can with only adjacent ends lapping whereby the sound suppressing action of said suppressor is enhanced by lengthening thereof as said sleeve is moved from said first position toward said second position, (d) securing means securing said sleeve in selected position on said can, and (e) said securing means including a slot in said sleeve extending longitudinally of said suppressor and a stop extending from said can into said slot thereby limiting movement of said sleeve relative to said can.
Claim 2
Dependent Claim
159 words
The improvement in a sound suppressor extending forwardly from the barrel of a weapon, comprising: (a) said suppressor having a generally cylindrically shaped can having interior sound suppressing means, (b) a bored entrance end plug on said can and means securing said can to said barrel of said weapon, (c) a tubular sleeve fitted on said can and slidable longitudinally of said can between a first position retracted onto said can and a second position extending forwardly from said can with only adjacent ends lapping whereby the sound suppressing action of said suppressor is enhanced by lengthening thereof as said sleeve is moved from said first position toward said second position, (d) securing means securing said sleeve in selected position on said can, and (e) said securing means including a slot in said sleeve extending longitudinally of said suppressor and a stop extending from said can into said slot thereby limiting movement of said sleeve relative to said can.
Claim 3
Dependent Claim
36 words
The subject matter of claim 1 in which stop is a threaded body with a manually operable knob with lock means whereby said stop can be tightened to lock said sleeve in position on said can.
Claim 4
Dependent Claim
48 words
The subject matter of claim 2 in which said sleeve has a plurality of notches extending laterally from said slot in which said stop can be selectively positioned to index extension of said sleeve relative to said can and for locking of said stop in a selected position.
References Cited (Backward Citations)
US1127250A
Cited
US1187581A
Cited
US1354416A
Cited
US1482805A
Cited
FR684938A
Cited
US3164060A
Cited
US3776093A
Cited
US3786895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-23 | 1986-11-22 | 1987-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-23 | 1990-11-22 | 1991-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-23 | 1994-11-22 | 1995-05-24 | $7700.00 | Window Closed / Lapsed |