Patent US4558802A successfully refreshed from Google Patents.
Patent US3840995A successfully refreshed from Google Patents.
US3840995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable rear sight for shotguns having flat sided receivers
Assignee: Individual
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Filing: 1973-02-13
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Granted: 1974-10-15
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Expires: 1993-02-13
Abstract
Abstract A readily detachable rear sight for single-barrel shotguns with flat-sided receivers includes a pair of resilient legs having flat interior surfaces which engage respective receiver sides and thereby prevent rotation of the sight. The sight is adapted to fit the shotgun at the juncture between the receiver and the barrel and includes, at its forward end, a resilient clip which engages the barrel. In projecting over the barrel from the top of the receiver the sight provides clearance for a barrel rib.
Inventors
- 👤 A Freiling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:03
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/06; F41G1/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A detachable rear sight for a single-barrel shotgun having a flat-sided receiver joined at a junction to the curved single barrel, said sight comprising: a generally U-shaped body member arranged to snap-fit over the top of said shotgun at said junction in inverted U position; said body member including a pair of resilient sides arranged to extend downwardly along the sides of said shotgun and a connecting piece joining said sides and arranged to sit atop the shotgun; said resilient sides each having an interior surface with a portion forward of said junction contoured to resiliently engage said barrel between said sides, and a portion rearward of said junction contiguous with said forward porTion and having a flat contour matched to the flat sides of said receiver; the sides of said body member being slightly toed to permit resilient engagement of said receiver between the rearward portions of said sides; and said connecting piece having an outer surface contoured to define a sighting notch.
Claim 2
Dependent Claim
164 words
A detachable rear sight for a single-barrel shotgun having a flat-sided receiver joined at a junction to the curved single barrel, said sight comprising: a generally U-shaped body member arranged to snap-fit over the top of said shotgun at said junction in inverted U position; said body member including a pair of resilient sides arranged to extend downwardly along the sides of said shotgun and a connecting piece joining said sides and arranged to sit atop the shotgun; said resilient sides each having an interior surface with a portion forward of said junction contoured to resiliently engage said barrel between said sides, and a portion rearward of said junction contiguous with said forward porTion and having a flat contour matched to the flat sides of said receiver; the sides of said body member being slightly toed to permit resilient engagement of said receiver between the rearward portions of said sides; and said connecting piece having an outer surface contoured to define a sighting notch.
Claim 3
Dependent Claim
26 words
The detachable rear sight according to claim 1 wherein said rearward portion is substantially wider in a direction along the shotgun length than said forward portion.
Claim 4
Dependent Claim
41 words
The detachable rear sight according to claim 2 wherein a portion of said connecting piece adapted to be positioned over said barrel is contoured to be spaced from said barrel to provide clearance of a sighting rib located atop said barrel.
Claim 5
Dependent Claim
16 words
The detachable rear sight according to claim 1 molded as an integral unit from plastic material.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |