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:
Feb. 23, 1982
Filed:
Feb. 04, 1980
Applicant:
Inventor:
Dwight Harris, Washington, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25C / ;
U.S. Cl.
CPC ...
173 91 ; 227113 ;
Abstract
A reciprocating ram or hammer is disclosed for driving flat nails in mines without danger of creating sparks that might ignite inflammable gases that would cause an explosion. The hammer comprises a cylindrical tube in which a ram is reciprocated to strike an anvil or drive pin which pushes against a flat nail by overcoming the resistance of a helical spring in the tube. As the nail is being driven, it is held at the end of the hammer by a permanent magnet. Such flat nails are commonly driven overhead for suspending lines.
Harris, Dwight. (1982). Nail driving impact hammer (U.S. Patent No. 4316513). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4316513
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile