US3589584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nail-driving device
Assignee: Gunnebo Industries AB
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Filing: 1967-09-26
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Granted: 1971-06-29
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Expires: 1987-09-26
Abstract
Abstract A nail-driving device for securing a mounting strap assembly to a wall. The strap assembly is in the form of a curved bendable strip which is pierced substantially at its mid portion by a headed nail the head of which is located at the inside of the strip curvature. The assembly is fittable into the muzzle portion of a gun-type nail-driving device and is propelled out of the device by pressure generated in the same and released by actuation of a trigger mechanism. The strap assembly when inserted in the muzzle portion of the device is steadied in the same so that it is propelled therefrom in a direction normal to the wall into which the nail of the assembly is to be driven.
Inventors
- 👤 Borje Arvid Sixten Ohlsson
- 👤 Ture Erik Gunnar Ohlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:19
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/08; B25C1/10; B25C1/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
260 words
A nail-driving device comprising in combination: a jacket; a bored barrel having at one end of the bore a chamber for generating a propellant pressure therein and at the other end a muzzle portion for receiving therein a mounting strap assembly including a headed nail extended with a tight fit through a curved strip with the nail head on the inside of the strip curvature, the maximum width of the nail head matching the diameter of the barrel bore for insertion therein, said barrel being lengthwise slidable within the jacket between a safety position in which the muzzle portion of the barrel protrudes from the respective jacket end and a driving position in which said muzzle portion is substantially flush with said jacket end; a piston slidable in the barrel bore, one side of said piston being adjacent to said chamber for propelling the piston toward the muzzle portion by pressure generated in said chamber and the other side being engageable with a nail head facing the barrel to propel an assembly received in said muzzle portion out of the same by propulsion of the piston upon release of pressure generated in the chamber, said muzzle portion having in its end face an axial slot defining two legs, the width of the slot matching the width of the curved strip of the assembly at least at the midportion thereof; whereby the strip of a mounting-strap assembly fitted in said slot with the nail head facing the barrel bore is steadied at its lengthwise edges by the sidewalls of the slot.
Claim 2
Dependent Claim
260 words
A nail-driving device comprising in combination: a jacket; a bored barrel having at one end of the bore a chamber for generating a propellant pressure therein and at the other end a muzzle portion for receiving therein a mounting strap assembly including a headed nail extended with a tight fit through a curved strip with the nail head on the inside of the strip curvature, the maximum width of the nail head matching the diameter of the barrel bore for insertion therein, said barrel being lengthwise slidable within the jacket between a safety position in which the muzzle portion of the barrel protrudes from the respective jacket end and a driving position in which said muzzle portion is substantially flush with said jacket end; a piston slidable in the barrel bore, one side of said piston being adjacent to said chamber for propelling the piston toward the muzzle portion by pressure generated in said chamber and the other side being engageable with a nail head facing the barrel to propel an assembly received in said muzzle portion out of the same by propulsion of the piston upon release of pressure generated in the chamber, said muzzle portion having in its end face an axial slot defining two legs, the width of the slot matching the width of the curved strip of the assembly at least at the midportion thereof; whereby the strip of a mounting-strap assembly fitted in said slot with the nail head facing the barrel bore is steadied at its lengthwise edges by the sidewalls of the slot.
Claim 3
Dependent Claim
83 words
A nail-driving device according to claim 1 wherein the outer sidewalls of said legs are flat and extend beyond the depth of the slot, the sidewalls of the slot being also flat and parallel to the flat sidewalls of the slot whereby the two lengthwise edges of the strip rest against the sidewalls of the slot and the short edges at the ends of the strip abut against the flat sidewalls of the legs thus steadying the strip at the four edges thereof.
Claim 4
Dependent Claim
38 words
A nail-driving device according to claim 1 wherein the axial depth of the slot is such that the nail head protrudes into the barrel bore when the midportion of the strip rests upon the base of said slot.
Claim 5
Dependent Claim
77 words
A nail-driving device according to claim 1 wherein the jacket has at is end adjacent to the muzzle portion a contiguous outer portion and inner portion, the inner diameter of the outer jacket portion and the curvature of the strip being so correlated that the diameter of said outer portion fits the maximum width of the strip curvature and that the diameter of the inner jacket portion is less than said maximum width of the strip curvature.
References Cited (Backward Citations)
US2863149A
Cited
US3040325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |