Chip catching washers

Details Chip catching washers Chip catching washers

F - Mech Eng,Light,Heat,Weapons

16

B

85/1, 85/107, 85

F16B 25/00 (2006.01) F16B 43/00 (2006.01) F16B 25/10 (2006.01)

Patent

CA 1115998

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 and 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.

333855

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