US3820266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge case ejector for bolt gun
Assignee: Gunnebo Industries AB
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Filing: 1973-01-26
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Granted: 1974-06-28
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Expires: 1993-01-26
Abstract
Abstract A gun for driving nails, bolts, etc. by the force generated by detonating an explosive cartridge has a firing mechanism with a striker pin for detonating the cartridge by operating the firing mechanism. The gun comprises an axially movable bolt accommodating a movable striker pin which, in turn, mounts a transversely disposed pin for limiting the axial movement of the striker pin and a spring which acts upon the bolt. The outside of the bolt includes an axial groove in which is placed an elongate member, the ends of which are provided with two inwardly directed arms. One arm is placeable into contact with the explosive cartridge at the forward flange thereof when the gun is cocked. This placement of the arm retains the cartridge against the front surface of the bolt. The other arm, due to the shape of the bolt, replaces the pin limiting the movement of the striker pin.
Inventors
- 👤 S Larsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:49
CPC Classifications
F; F41; F41A; F41A21/00; F41A21/10; B; B25; B25C; B25C1/00; B25C1/08; B25C1/10; B25C1/105; B25C1/14; B25C1/143; B25C1/18; B25C1/188; B25F; B25F5/00; B25F5/006; F41C; F41C3/00; F41C3/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
238 words
In a cartridge tooL having a housing, a barrel in said housing, said barrel having a muzzle end and a breech end for accepting a cartridge having a flanged end, a striker piston in said muzzle which is propelled forward upon firing of said cartridge, the improvement comprising a bolt assemblage in said housing and opposite the breech end of said barrel, said bolt assemblage having a sleeve, a cylindrical unit within said sleeve, said unit having an eccentric axial passageway and an elongated slot extending axially along the surface of said cylindrical unit and radially toward the center thereof, a firing pin assemblage within said housing comprising a firing pin housing and a firing pin and an energizing spring within said firing pin housing and an axial slot in said firing pin housing, and a cartridge ejector means in the axial slot in said cylindrical unit, said ejector means comprising an arm extending axially along said slot, a claw extending beyond said cylindrical unit and transversely from said arm radially inward to catch the flange of a cartridge, a pivot point extending radially inward from the other end of said arm for pivoting about the edge of said slot in said firing pin housing, a cutout in said arm above said pivot point, a helical spring supported around said cylindrical unit with one end abutting said cutout and means for supporting the other end of said spring.
Claim 2
Dependent Claim
238 words
In a cartridge tooL having a housing, a barrel in said housing, said barrel having a muzzle end and a breech end for accepting a cartridge having a flanged end, a striker piston in said muzzle which is propelled forward upon firing of said cartridge, the improvement comprising a bolt assemblage in said housing and opposite the breech end of said barrel, said bolt assemblage having a sleeve, a cylindrical unit within said sleeve, said unit having an eccentric axial passageway and an elongated slot extending axially along the surface of said cylindrical unit and radially toward the center thereof, a firing pin assemblage within said housing comprising a firing pin housing and a firing pin and an energizing spring within said firing pin housing and an axial slot in said firing pin housing, and a cartridge ejector means in the axial slot in said cylindrical unit, said ejector means comprising an arm extending axially along said slot, a claw extending beyond said cylindrical unit and transversely from said arm radially inward to catch the flange of a cartridge, a pivot point extending radially inward from the other end of said arm for pivoting about the edge of said slot in said firing pin housing, a cutout in said arm above said pivot point, a helical spring supported around said cylindrical unit with one end abutting said cutout and means for supporting the other end of said spring.
Claim 3
Dependent Claim
44 words
The cartridge tool of claim 1 wherein the pivot point of the arm of said ejector means comprises a tab slidably movable in the slot in said firing pin housing with the end of said tab facing the front of the tool being pointed.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |