US4367836A — Nail driver

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.

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

Nail driver

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag