Patent US3683536A successfully refreshed from Google Patents.
US3683536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolver crane
Assignee: Sturm Ruger and Co Inc
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Filing: 1971-01-12
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Granted: 1972-08-15
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Expires: 1991-01-12
Abstract
Abstract In a revolver of the swing-out-cylinder type, the portion of the frame immediately below the longitudinally disposed, internally threaded, barrel-receiving bore thereof is strengthened by forming the forward portion of the ejector rod support section of the cylinder crane with a concave recess that exposes about one half of that portion of the ejector rod that is co-extensive with the said ejector rod support section, and by providing the portion of the frame immediately below the barrel-receiving bore with an integrally formed arcuate protrusion that extends into the upper part of the said recess formed in the cylinder crane when the cylinder of the revolver is in its closed position.
Inventors
- 👤 Harry H Sefried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:16
CPC Classifications
F; F41; F41C; F41C3/00; F41C3/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
217 words
In a revolver which includes a frame, a barrel secured to the frame, a cylinder crane the lower end of which is pivotally mounted on the frame and the upper end of which is formed with an ejector rod support section, and an ejector rod extending longitudinally through and slidably supported by a longitudinal bore formed in the ejector rod support section of the cylinder crane, the cylinder crane being laterally swingable on its pivoted mounting from its closed firing position to its open loading and unloading position, and the portion of the frame disposed immediately above the cylinder crane being formed with a longitudinally disposed bore that is adapted to receive the rear end of the barrel, the improvement which comprises forming the forward portion of the ejector rod support section of the cylinder crane with a recess that exposes a portion of the ejector rod that is longitudinally co-extensive with the upper end of the cylinder crane, and providing the portion of the frame disposed below the barrel-receiving bore thereof with an integrally formed protrusion that extends into the upper part of the recess formed in the cylinder crane when the cylinder crane is in its closed position, whereby the thickness and strength of said portion of the frame below said bore is substantially increased.
Claim 2
Dependent Claim
217 words
In a revolver which includes a frame, a barrel secured to the frame, a cylinder crane the lower end of which is pivotally mounted on the frame and the upper end of which is formed with an ejector rod support section, and an ejector rod extending longitudinally through and slidably supported by a longitudinal bore formed in the ejector rod support section of the cylinder crane, the cylinder crane being laterally swingable on its pivoted mounting from its closed firing position to its open loading and unloading position, and the portion of the frame disposed immediately above the cylinder crane being formed with a longitudinally disposed bore that is adapted to receive the rear end of the barrel, the improvement which comprises forming the forward portion of the ejector rod support section of the cylinder crane with a recess that exposes a portion of the ejector rod that is longitudinally co-extensive with the upper end of the cylinder crane, and providing the portion of the frame disposed below the barrel-receiving bore thereof with an integrally formed protrusion that extends into the upper part of the recess formed in the cylinder crane when the cylinder crane is in its closed position, whereby the thickness and strength of said portion of the frame below said bore is substantially increased.
Claim 3
Dependent Claim
53 words
The revolver according to claim 1 in which the front end of the frame is formed with a vertically disposed crane- receiving recess that is adapted to receive the cylinder crane when said crane is in its closed position, said crane receiving recess being positioned directly below the barrel-receiving bore of the frame.
References Cited (Backward Citations)
US2329273A
Cited
US2382676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |