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:
Nov. 03, 1992
Filed:
May. 08, 1989
Dean S Somerville, McHenry, ND (US);
Posi Lock Puller, Inc., Cooperstown, ND (US);
Abstract
The hydraulically powered locking puller device comprises a base assembly about a central axis, a camming assembly circumferentially about the base assembly, and an hydraulic module axially centered within the base assembly. The base assembly has a cylindrical housing wall united to an anchor ring carrying at least two claw members and having an internally threaded cylindrical surface. The camming assembly includes a mooring ring mounted on the housing wall of the base assembly for axial movement therealong and a cam ring axially spaced from a coupler on the mooring ring. The cam ring is in camming relationship to the claw members. The hydraulic module includes a plunger with a replaceable tip, a spring retractor, a carrying ring for hoist movement of the puller, and threads for cooperative threading with the internal threads of the anchor ring to fix the hydraulic module against axial shift, but yet permit easy removal of it for servicing and replacement without disturbing any part of the relationship and elements of the base assembly and camming assembly. A shoulder within the anchor ring provides an abuttment against which the hydraulic module is lodged in assembly.