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. 26, 1982
Filed:
Aug. 16, 1979
Applicant:
Inventors:
Campbell E Waller, Eltham, AU;
Keith E Watts, Brunswick, AU;
Assignee:
McPherson's Limited, Melbourne, AU;
Primary Examiner:
Int. Cl.
CPC ...
F16B / ; F16B / ;
U.S. Cl.
CPC ...
411387 ; 411542 ;
Abstract
According to the present invention, a washer is provided for a self drilling screw or like fastening device through which the fastening device passes, said washer defining a cavity capable of capturing the retaining drill chips as they are formed. The washer may include means for positively locating the washer on and over the drill point of the fastening device. The cavity can be formed by a skirt region adapted to surround the fastening device and in one aspect the cavity may include a mastic or like substance capable of securely holding drill chips.