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:
Mar. 16, 1993
Filed:
Feb. 21, 1992
Applicant:
Inventor:
Brian K Jackson, Newton Aycliffe, GB;
Assignee:
Black & Decker, Inc., Newark, DE (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26B / ;
U.S. Cl.
CPC ...
30350 ; 30355 ; 30369 ; 125 22 ;
Abstract
A saw blade for a two-blade, contra-reciprocating saw has two strips spot welded together. Teeth are formed by scallops cut along an edge of each strip with lands between these scallops. Abrasive grit, such as tungsten carbide chips, is brazed on the teeth except on the sides of the teeth which rub against each other as the blades reciprocate. The main cutting surfaces are the lands which are longer on one strip than the other. The arrangement is useful for cutting masonry and metal products and reduces stresses on the blade.