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:
Oct. 18, 1983
Filed:
Apr. 20, 1981
Applicant:
Inventor:
Earl E Frank, Tallman, NY (US);
Assignee:
Abex Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
104 / ; 137637 ;
Abstract
A pair of air-operated hammers for driving railroad spikes are guided by separate yokes, raised and lowered by trunnion-mounted cylinders; a cross frame in a vertical plane is supported between the hammers and clamps join upright guides to the crossframe, the clamps enabling the hammers to be laterally adjusted on a main frame.