Patent US3738388A successfully refreshed from Google Patents.
US4869151A
Expired / Lapsed
US
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Noise and recoil suppressor apparatus for high powered rifles
Assignee: Individual
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Filing: 1987-08-19
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Granted: 1989-09-26
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Expires: 2007-08-19
Abstract
Abstract A noise and recoil suppressor apparatus for high powered rifles includes a tubular body with an inner central cylindrical bore and an outer cylindrical surface. A butt end portion of the tubular body is adapted for attachment to the muzzle end portion of a high powered rifle and the body provides an opposite tip portion. An annular rib extends outwardly from the outer cylindrical surface and is positioned adjacent the butt end portion of the tubular body. A plurality of space apart latterally extending cylindrical openings extends between the bore and the outer surface of the tubular body, the first plurality of openings being spaced along the tubular body beginning at the tip portion and terminating at the annular rib. A second plurality of openings extends at an acute angle with respect to the bore axis between the bore and the outer cylindrical surface adjacent the annular rib. The second plurality of openings are positioned generally between the annular rib and the first plurality of openings. Each of the second plurality of openings provides a gas travel path from the inner bore to the outer surface thereof at an angle and with an angular velocity component which forces sound waves away from the shooter.
Inventors
- 👤 Eduardo A. Chahin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:51
CPC Classifications
F; F41; F41A; F41A21/00; F41A21/32; F41A21/36; F41A21/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
348 words
A noise and recoil suppressor apparatus for a rifled bore-type high powered rifle that is held by a shooter during firing so that the shooter is subjected to the recoil and noise generated by the rifle when fired, comprising: a. a tubular body with a generally cylindrical outer surface and having a central cylindrical bore with a central bore axis and of a diameter greater than the rifled bore, the body including a butt end portion having means for attachment to the muzzle end of the high powered rifle, and an opposite forward tip end portion; b. an annular rib extending radially outwardly from the outer cylindrical surface terminating at a peripheral edge, and positioned adjacent the butt end portion of the tubular body, the peripheral edge defining an outermost maximum diameter of the rib, the rib including a forwardly facing annular surface extending between the peripheral edge and the cylindrical outer surface at an intersection therewith; c. a first plurality of spaced apart laterally extending recoil reducing port openings, each opening extending between the tubular body bore and the outer cylindrical surface, the first plurality of openings being spaced along the tubular body forwardly of the annular rib; d. a second plurality of openings, each extending at an acute angle with respect to the tubular body bore axis and communicating between the bore and the outer cylindrical surface adjacent the intersection of the forwardly facing annular surface of the annular rib and the outer cylindrical surface, the second plurality of openings being positioned between the annular rib and the first plurality of openings; and e. each of the second plurality of openings extending forwardly to provide gas travel paths between the bore and the exterior surface through which gas can travel to the exterior surface of the tubular body during a firing of the high powered rifle with a forward velocity component so that gas exiting the second plurality of openings in combination with the annular rib can shield sound waves exiting the first plurality of openings from the shooter, lowering noise levels experienced by the shooter.
Claim 2
Dependent Claim
348 words
A noise and recoil suppressor apparatus for a rifled bore-type high powered rifle that is held by a shooter during firing so that the shooter is subjected to the recoil and noise generated by the rifle when fired, comprising: a. a tubular body with a generally cylindrical outer surface and having a central cylindrical bore with a central bore axis and of a diameter greater than the rifled bore, the body including a butt end portion having means for attachment to the muzzle end of the high powered rifle, and an opposite forward tip end portion; b. an annular rib extending radially outwardly from the outer cylindrical surface terminating at a peripheral edge, and positioned adjacent the butt end portion of the tubular body, the peripheral edge defining an outermost maximum diameter of the rib, the rib including a forwardly facing annular surface extending between the peripheral edge and the cylindrical outer surface at an intersection therewith; c. a first plurality of spaced apart laterally extending recoil reducing port openings, each opening extending between the tubular body bore and the outer cylindrical surface, the first plurality of openings being spaced along the tubular body forwardly of the annular rib; d. a second plurality of openings, each extending at an acute angle with respect to the tubular body bore axis and communicating between the bore and the outer cylindrical surface adjacent the intersection of the forwardly facing annular surface of the annular rib and the outer cylindrical surface, the second plurality of openings being positioned between the annular rib and the first plurality of openings; and e. each of the second plurality of openings extending forwardly to provide gas travel paths between the bore and the exterior surface through which gas can travel to the exterior surface of the tubular body during a firing of the high powered rifle with a forward velocity component so that gas exiting the second plurality of openings in combination with the annular rib can shield sound waves exiting the first plurality of openings from the shooter, lowering noise levels experienced by the shooter.
Claim 3
Dependent Claim
22 words
The apparatus of claim 1 wherein the first plurality of openings are of a larger diameter than the second plurality of openings.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1 wherein the second plurality of openings are equi-radially spaced.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1 wherein the second plurality of openings each define radially extending angled bores that intersect the tubular body axis.
Claim 6
Dependent Claim
33 words
The apparatus of claim 1 wherein the tubular body bore axis coincides with the rifle bore axis but the body bore axis is of a slightly larger diameter than the rifle bore axis.
Claim 7
Dependent Claim
15 words
The apparatus of claim 1 wherein the first plurality of openings are transverse cylindrical openings.
Claim 8
Dependent Claim
31 words
The apparatus of claim 6 wherein the first plurality of openings comprise multiple cylindrical openings each having a central axis which intersects the tubular body bore axis at substantially right angles.
Claim 9
Dependent Claim
28 words
The apparatus of claim 4 wherein the second plurality of openings have bores which intersect the main body bore at a common angle and at a common position.
Claim 10
Dependent Claim
22 words
The apparatus of claim 8 wherein the common angle is an acute angle with a value of at least twenty degrees (20°).
Claim 11
Dependent Claim
41 words
The apparatus of claim 1 wherein the annular rib is defined by a frusto-conical outer surface of the tubular body beginning at the butt end portion of the tubular body and terminating at the largest diameter section of the annular rib.
Claim 12
Dependent Claim
26 words
The apparatus of claim 10 wherein the annular rib comprises two joined annular, frusto-conical surfaces having different cross-sectional configurations but identical maximum diameters at their joint.
Claim 13
Dependent Claim
26 words
The apparatus of claim 10 wherein the central cylindrical bore has an internal diameter no more than 0.015 inches greater than the rifle bore internal diameter.
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) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |