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:
May. 30, 1978
Filed:
Jun. 02, 1977
Virgil R Durgan, Tremont, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A hydraulic puller tool for use in confined spaces including a housing defining an annular fluid-receiving chamber and having a hollow, open ended, tube-like center extending from end to end of the housing, an annular piston slidably received within the chamber and having an end extending from an end of the housing in sealed relation thereto with an opening aligned with the hollow center, at least one port in the housing for admitting fluid into the chamber, and a tube-like adapter freely received in the piston opening and the hollow center and rotatable therein, the adapter having a radially extending stop engaging the end of the piston and being at least partially internally threaded at a location remote from the stop.