H - Electricity – 01 – R
Patent
H - Electricity
01
R
339/29.4
H01R 4/24 (2006.01)
Patent
CA 1134001
PENETRATING SCREW ABSTRACT A novel screw, which can be mounted on the conventional electrical apparatus, comprising a threaded main body having an insulating layer provided at the head thereof, and a socket located at its lower end; a detachable penetrating device having a plurality of pointed teeth, and a through-hole located preferrably at its central portion; and a connecting rod for inserting through the hole of the penetrating device into the socket of the main body so as to mount the penetrating device on the main body rotatably.
358961
Liu Lian H.
Mcfadden Fincham
LandOfFree
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