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:
Jan. 13, 1998
Filed:
Jul. 11, 1995
Applicant:
Inventor:
Bimal K Chaterjee, Jackson, TN (US);
Assignee:
Porter-Cable Corporation, Jackson, TN (US);
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ; C23C / ;
U.S. Cl.
CPC ...
148218 ; 148219 ; 148225 ; 148226 ;
Abstract
Improved corrosion, wear and fatigue resistance is provided for pieces formed of medium alloy, low carbon steel by subjecting the piece to a treatment process which includes a step of carburizing, followed by nitriding. The process is especially useful for producing durable and low-cost steel parts, for example for certain automotive and marine applications, pumps (especially positive displacement pumps), chemical or food processing equipment, power tools, and the like. The blade-carrying reciprocating shaft for a reciprocating power saw is a specific example.