US3841474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nail holder assembly
Assignee: Hilti AG
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Filing: 1972-07-10
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Granted: 1974-10-15
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Expires: 1992-07-10
Abstract
Abstract In a nail holder assembly for use in an explosive charge driven setting device, nails with heads extending transversely outwardly from the shank portion of the nail, are held in spaced relationship on and extending through an elongated belt-like strip. The strip is arranged to form a washer-like member around each nail as it is driven from the strip into a target material, the washer has an area which is a multiple of the area of the head of the nail. A sleeve is positioned about the shank portion of each nail between its head and the surface of the strip so that the sleeve is forced against the strip when the nail is driven into the target material. The sleeve can be cylindrically or frusto-conically shaped and the holes in the strip through which the nails pass, can be provided with a counterbore having a configuration corresponding at least to the configuration of the end of the sleeve directed toward the strip.
Inventors
- 👤 E Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:50
CPC Classifications
F; F16; F16B; F16B19/00; F16B19/14; F16B15/00; F16B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
350 words
A nail holder assembly for feeding nails serially into an explosive charge driven setting device from which nails are driven into a target material, said nail holder assembly comprising a plurality of nails each having a shank portion and a head extending transversely of and outwardly from said shank portion, an elongated belt-like strip, said strip having a plurality of holes therethrough spaced apart in the longitudinal direction of said strip and each hole holding the shank portion of one of said nails, said strip having at least one slot-like opening spaced between each adjacent pair of said holes for said nails with the slot-like opening extending through said strip and transversely of its longitudinal direction and having a length less than the width of said strip, the area of said strip between adjacent slot-like openings being arranged to provide a multiple of the area of the nail head on said nails positioned within said strip so that, as each of said nails is driven by an explosive charge from the setting device, it causes the section of said strip surrounding said holes and extending between adjacent said slot-like openings therein to separate from the remainder of said strip and form a disk or washer on the shank of said nail which has an area considerably larger than the area of the nail head, wherein the improvement comprises that each said nail head is spaced from said strip by a part of the axial length of said nail shank portion, and a sleeve fitted about each said nail shank portion and said sleeve positioned on said nail shank portion between said strip and the head of said nail, each sleeve having an axial length less than the length of the part of the axial length of its associated nail shank portioN which extends between the nail head and the strip, the outer surface of each sleeve having a frusto-conical configuration tapering outwardly toward the head of the nail, and each hole having a frusto-conically shaped configuration having a taper corresponding to the taper of the frusto-conical configuration of the sleeve.
Claim 2
Dependent Claim
350 words
A nail holder assembly for feeding nails serially into an explosive charge driven setting device from which nails are driven into a target material, said nail holder assembly comprising a plurality of nails each having a shank portion and a head extending transversely of and outwardly from said shank portion, an elongated belt-like strip, said strip having a plurality of holes therethrough spaced apart in the longitudinal direction of said strip and each hole holding the shank portion of one of said nails, said strip having at least one slot-like opening spaced between each adjacent pair of said holes for said nails with the slot-like opening extending through said strip and transversely of its longitudinal direction and having a length less than the width of said strip, the area of said strip between adjacent slot-like openings being arranged to provide a multiple of the area of the nail head on said nails positioned within said strip so that, as each of said nails is driven by an explosive charge from the setting device, it causes the section of said strip surrounding said holes and extending between adjacent said slot-like openings therein to separate from the remainder of said strip and form a disk or washer on the shank of said nail which has an area considerably larger than the area of the nail head, wherein the improvement comprises that each said nail head is spaced from said strip by a part of the axial length of said nail shank portion, and a sleeve fitted about each said nail shank portion and said sleeve positioned on said nail shank portion between said strip and the head of said nail, each sleeve having an axial length less than the length of the part of the axial length of its associated nail shank portioN which extends between the nail head and the strip, the outer surface of each sleeve having a frusto-conical configuration tapering outwardly toward the head of the nail, and each hole having a frusto-conically shaped configuration having a taper corresponding to the taper of the frusto-conical configuration of the sleeve.
References Cited (Backward Citations)
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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 |