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.

Date of Patent:
Jun. 28, 1988

Filed:

Apr. 01, 1987
Applicant:
Inventor:

Thomas W Kennedy, West Barnstable, MA (US);

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25G / ;
U.S. Cl.
CPC ...
81 22 ; 81 25 ; 81 20 ;
Abstract

A hand tool, such as striking device like a sledgehammer, having replaceable head elements, which device comprises a handle having a raised extension on one end and a threaded cavity therein, and a replaceable head element, having a cavity therein; an insert having a hole therein to fit into the top part of the cavity of the head element, a threaded bolt, an a retaining tubular, elastomeric element, subject to expansion on axial compression, whereby various head elements of different cavity size may be secured to the extension of the handle by placing the threaded bolt through the insert hole and through tubular retaining element and threading the bolt into a threaded cavity of the raised extension to axially compress and expand outwardly the tubular elastomeric element into a frictional and shock-absorbing relationship with the interior surface of the head element cavity, thereby providing a hand tool device by which head elements having various cavity dimensions may be rapidly and efficiently secured to the handle.


Find Patent Forward Citations

Kennedy, Thomas. (1988). Hand tool, such as a sledgehammer, with replaceable head (U.S. Patent No. 4753137). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4753137

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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