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. 15, 1993
Filed:
May. 08, 1992
Richard Z Jarzebowicz, Kirkland, WA (US);
Joy S Ransom, Seattle, WA (US);
Eric T Easterbrook, Kent, WA (US);
Charles M Copple, Kent, WA (US);
Leonard F Reid, Bellevue, WA (US);
Fatigue Technology, Inc., Seattle, WA (US);
Abstract
A split sleeve (96) is seated in a fastener hole (10) in the web (8) of a rail section (2). The tapered portion (26) of a mandrel (20) is firmly seated in the hole (10) inside the sleeve (96). A puller mechanism jaw (40) and a nosecap (78) are moved downwardly over the projecting rear end portion of the mandrel (20) to position the rear end portion in aligned U-shaped slots (50, 84) in the jaw (40) and nosecap (78). During the downward movement, guide surfaces (72) carried by the jaw (40) guide a chamfer (32) on the mandrel (20) into seating engagement with a tapered surface (56) on the jaw (40). The guide surfaces (72) may be formed by cylindrical pins (70) received into angled openings (58) in the jaw body. The front surface (88) of the nosecap (78) securely abuts the Web (8). With the mandrel ( 20) seated and the nosecap (78) abutting, the jaw (40) is moved rearwardly to pull the mandrel (20) through the hole (10) and cold expand the hole (10).