# US 2014/0197221 A1 · Nailer

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- Number: US 2014/0197221 A1
- Document ID: US20140197221A1
- Status: Published application
- Kind: A1
- Application number: 14/150,777
- Filed: 2014-01-09
- Published: 2014-07-17
- Earliest claimed: 2013-01-17
- Inventors: King Wong Kevin Kok
- Web page: https://patentgrep.com/patent/US20140197221A1

## CPC

- B25C 1/08: operated by combustion pressure
- B25C 1/008: {Safety devices}
- B25C 1/04: operated by fluid pressure {, e.g. by air pressure}
- B25C: HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS (for shoemaking A43D)

## Abstract

A nailer includes a housing, a handle connecting the housing, a combustion chamber and a cylinder inside the housing, a piston whose rear end is inside the cylinder, a cage covering the exterior front end of the cylinder with the front end abutting on that of the cylinder, and a pin guide component that separately connects the nailer and further includes a nose piece, a guide sleeve whose lower end links the pin guide, an adjusting threaded rod whose front end connects the upper end of the guide sleeve and rear end links the upper end of the rear sleeve, a knob, a rear sleeve inserted into the adjusting threaded rod and fixed between the upper end of the guide sleeve and that of the rear sleeve, and a piston guide. The nailer boasts capability of pin guide replacement, quick troubleshooting and regulation of the nail driving depth.

## Claims

### Claim 1

A nailer, comprising a housing, a handle that connects the housing, an combustion chamber and a cylinder inside the housing, a piston whose rear end is located inside the cylinder, a cage that covers an exterior front end of the cylinder, with a front end abutting on that of the cylinder, wherein the combustion chamber wraps an exterior rear end of the cylinder, and a rear end of the cage is connected with a front end of the combustion chamber, a rear cap positioned on a rear end of the housing, a cylinder head on the rear end of the cylinder, an O-ring inside the cylinder, a nose piece connected with a front end of the housing, a pin guide whose rear end is inside the nose piece, and a track assembly located below and connected with the nose piece, characterized in that of the nailer further comprises a pin guide component that can separately connect the nailer and comprises a pin guide, a nose piece, a guide sleeve, an adjusting threaded rod, a knob, a rear sleeve and a piston guide, wherein a lower end of the guide sleeve is linked with the pin guide; a front end of the adjusting threaded rod is connected with an upper end of the guide sleeve while a rear end of the adjusting threaded rod is linked with an upper end of the rear sleeve; the knob is inserted into the adjusting threaded rod and is fixed between the upper end of the guide sleeve and that of the rear sleeve; a bottom end of the rear sleeve is positioned at a rear end of the pin guide and abuts on the front end of the cage; a front end of the piston guide is inside the rear sleeve while a bottom rear end of the piston guide connects the cage.

### Claim 2 (depends on 1)

The nailer as claimed in claim 1, characterized in that two semicircular tanks are below the guide sleeve and the rear sleeve respectively; the pin guide is provided with two annular bosses; the lower end of the guide sleeve connects a segment of the pin guide between the two annular bosses; an arc boss is fixed below the rear end of the piston guide, which matches with a square hole on the nose piece.

### Claim 3 (depends on 1)

The nailer as claimed in claim 1, characterized in that a nail feeder is set above the track assembly, which comprises a pin-free contact, a nail pushing head and a perforated stud.

### Claim 4 (depends on 1)

The nailer as claimed in claim 1, characterized in that the nailer further comprises a connection component for installation of the track assembly, which comprises a connection plate holder, a connection plate, a hook, a connection plate cover, a wrench, a washer, a track lock and a torsional spring; the connection plate mounted on the handle is provided with a first and second hole; the connection plate holder is provided with a first and second screw column that corresponds to the first and second hole; the first screw column goes through the first hole, the hook, the connection plate cover and the wrench in sequence, and become fixed via the fastener and the washer; the second screw column goes through the second hole, the track lock and the connection plate cover in sequence, and become fixed via the fastener and the washer; the torsional spring nests the track lock, with one claw suspended on the track lock and the other claw on the hook.

### Claim 5 (depends on 4)

The nailer as claimed in claim 4, characterized in that the hook has a hook portion which abuts on a concave tooth of the track lock; a semicircular buckle of a track connector meshes with a semicircular notch of the track lock.