US 7,802,500 B2 · Pneumatic fastener driving tool

Abstract

A pneumatic fastener driving tool is configured to drive a threaded fastener using both linear and rotational motion. The tool allows a fastener to first be driven linearly, without rotation, through a surface material and into a substrate material, preferably to a depth that causes the fastener to at least pierce the substrate material. The tool then rotates the threaded fastener and causes it to fully engage the substrate material, thereby fastening the surface material to the substrate material. The tool has sufficient linear force to drive a fastener into relatively hard substrate materials, such as steel studs, and has a stationary air motor assembly to reduce recoil generated during the driving process. The tool further comprises a gear reducer assembly that uses a compound planetary gear in order to reduce the overall length of the tool.

Claims22

Dependent claims

A pneumatic fastener driving tool for driving a fastener using linear and rotational motion, comprising:

a housing;
a poppet valve assembly;
a driver blade assembly;
an air chamber;
a spool valve assembly;
an air motor assembly;
and,
a gear reducer assembly,
the poppet valve assembly, the driver blade assembly, the air chamber, the spool valve assembly, the air motor assembly, and the gear reducer assembly all disposed within the housing,
wherein the driver blade assembly is at least partially disposed within the air chamber and the poppet valve assembly is configured to sealingly engage the air chamber, the air chamber disposed between the poppet valve assembly and the air motor assembly,
wherein the air motor assembly is annularly disposed about the driver blade assembly and is engageable with the driver blade assembly, wherein the air motor assembly and the gear reducer assembly are fixed in a stationary position within the housing and relative to the housing during actuation of the tool,
and wherein the driver blade assembly is non-rotatably driven a first distance and is then rotatably driven a second distance beyond the first distance.

9 more elements

Dependencies are inferred from the claim text.

Pneumatic fastener driving tool

Life of this patent

Pneumatic fastener driving tool

Life of this patent

Abstract

Claims22