Patent US4367836A successfully refreshed from Google Patents.
US4367836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nail driver
Assignee: Individual
•
Filing: 1980-08-04
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Granted: 1983-01-11
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Expires: 2000-08-04
Abstract
Abstract A manual tool suitable for driving nails into concrete or the like comprises an axially extended tube and a ram mounted for reciprocal movement therein, the ram having a handle at one end thereof. The diameter of the ram along its length is substantially less than that of the bore of the tube. The end of the ram remote from the handle is provided with a low friction means to space the ram from the walls of the tube. Typically the low friction spacing means comprises a plurality of ball bearings located respectively in a plurality of recesses formed in the radial surface of the ram.
Inventors
- 👤 Ivan E. Hodson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:00
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
126 words
In a nail driver comprising an elongated tube, an elongated ram mounted for reciprocal movement in said tube, said ram having a first end and an opposite end thereto having a handle means therefor, the improvement wherein the radial dimension of said ram is substantially less than that of the tube, so as to provide a substantial clearance between the radial wall of said ram along the length thereof and the interior wall of said tube, and wherein low friction spacing means is provided adjacent said first end of said ram, said low friction spacing means being dimensioned and located so as to substantially preclude lateral displacement of said first end of said ram with respect to said tube and comprising a plurality of rolling surfaces.
Claim 2
Dependent Claim
126 words
In a nail driver comprising an elongated tube, an elongated ram mounted for reciprocal movement in said tube, said ram having a first end and an opposite end thereto having a handle means therefor, the improvement wherein the radial dimension of said ram is substantially less than that of the tube, so as to provide a substantial clearance between the radial wall of said ram along the length thereof and the interior wall of said tube, and wherein low friction spacing means is provided adjacent said first end of said ram, said low friction spacing means being dimensioned and located so as to substantially preclude lateral displacement of said first end of said ram with respect to said tube and comprising a plurality of rolling surfaces.
Claim 3
Dependent Claim
12 words
The nail driver of claim 1, wherein said rolling surfaces are balls.
Claim 4
Dependent Claim
21 words
The nail driver of claim 2 wherein said balls are disposed in recesses formed in the radial surface of said ram.
Claim 5
Dependent Claim
50 words
The nail driver of claim 3, wherein said tube is provided with a cap adjacent said handle means, said cap having an opening therein for the passage of said ram therethrough, the opening having a diameter intermediate that of said ram and that of the internal wall of said tube.
Claim 6
Dependent Claim
27 words
The nail driver of claim 3 wherein said ram is provided with a stop collar adjacent said opposite end intermediate said handle means and said first end.
Claim 7
Dependent Claim
37 words
The nail driver of claim 3 wherein said tube is provided with a nail holder at the end thereof adjacent the first end of said ram, and wherein said nail holder is threadably secured to said tube.
Claim 8
Dependent Claim
56 words
The nail driver of claim 1, wherein said ram is provided with a stop collar adjacent said handle means, and wherein said stop collar is provided with asymmetric securing means for securing said stop collar to said ram whereby the travel of said ram into said tube may be limited and varied in a predetermined manner.
Claim 9
Dependent Claim
27 words
The nail driver of claim 1, wherein both continuously variable and preset means are provided for controlling the degree to which a nail may be set therewith.
Claim 10
Dependent Claim
21 words
The nail driver of claim 1, including a pin integrally secured to the first end of said ram and coxial therewith.
Claim 11
Dependent Claim
127 words
A nail driver comprising a longitudinally extended tube, a longitudinally extended ram mounted in said tube for reciprocal movement therein, said ram having a radial dimension so as to provide a substantial clearance between the radial surface therof and the bore of said tube, said ram having a first end and a second end, a handle means attached to said second end, a plurality of small discrete raised areas disposed about said first end of said ram on the radial surface thereof, said small discrete raised areas in planform having their extreme outer surfaces locating on a locus having a radial dimension only marginally less than that of the bore of said tube, so as to coaxially align the first end of said ram and said tube.
Claim 12
Dependent Claim
127 words
A nail driver comprising a longitudinally extended tube, a longitudinally extended ram mounted in said tube for reciprocal movement therein, said ram having a radial dimension so as to provide a substantial clearance between the radial surface therof and the bore of said tube, said ram having a first end and a second end, a handle means attached to said second end, a plurality of small discrete raised areas disposed about said first end of said ram on the radial surface thereof, said small discrete raised areas in planform having their extreme outer surfaces locating on a locus having a radial dimension only marginally less than that of the bore of said tube, so as to coaxially align the first end of said ram and said tube.
Claim 13
Dependent Claim
18 words
The nail driver of claim 10 wherein said tube and said ram have right circular radial cross section.
Claim 14
Dependent Claim
14 words
The nail driver of claim 10 wherein said small discrete raised areas are rolling.
Claim 15
Dependent Claim
12 words
The nail driver of claim 12 wherein the rolling areas comprise balls.
Claim 16
Dependent Claim
21 words
The nail driver of claim 13 wherein said balls are disposed in recesses formed in the radial surface of said ram.
Claim 17
Dependent Claim
38 words
The nail driver of claim 14 further comprising a nail holder coxially secured to said tube and a pin engageable with said nail holder integrally secured to the first end of said ram as a coaxial extension thereof.
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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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |