The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 1982
Filed:
Jun. 14, 1979
Henry A Scarton, Troy, NY (US);
Warren C Kennedy, Pittsburgh, PA (US);
Rensselear Polytechnic Institute, Troy, NY (US);
Abstract
A nozzle seal for restricting pneumatic leakage from the nozzle hole of a pneumatic hammer having a tool shank movable therein, comprising, a bushing member and a retaining member axially aligned in the nozzle hole of the pneumatic hammer with a seal member therebetween. Bores are provided through the bushing member, retainer member and seal member for accepting the tool shank with the seal member having a bore closely fit around the tool shank to prevent a leakage of air from the interior of the hammer through the nozzle hole. The bushing member is press-fit and firmly held in the nozzle hole while the retainer member is slip-fit into the hole to facilitate its removal and access to the seal member. The bores may be polygonal, circular or oval to accept tool shanks of corresponding cross-sectional shapes. An O-ring may be provided on the retainer member for establishing a hermetic seal between the retainer member and the nozzle housing and a pin may be provided on the retainer member extending through an aperture in the seal member to establish a proper orientation between the bores of the retainer and bushing members and the bore of the seal member.