Brushing – scrubbing – and general cleaning
Patent
1975-12-19
1977-07-12
Britts, Ramon S.
Brushing, scrubbing, and general cleaning
151 41, F16B 3926, F16B 3932
Patent
active
040347885
ABSTRACT:
A fastener assembly for use in securing one member to another includes a bolt and a washer telescoped onto the bolt. The washer is formed with a central protruding section and an integral annular flange extending radially outward from the base of the protruding section. A frustoconical recess formed within the underside of the washer is smaller in diameter than the diameter of the protruding section. Mating ratchet teeth formed on the underside of the bolt head and the protruding section interfit so as to enable the bolt to be turned relative to the washer during tightening while keeping the bolt from turning in a loosening direction once the bolt is tightened down. To keep the washer from turning relative to the members secured together by the bolt, angularly spaced sets of two locking teeth are formed within the flange and extend axially therefrom to embed in the upper surface of the top member. The teeth in each set face each other so that one tooth locks the washer against turning in a tightening direction and the other tooth locks the washer against turning in a loosening direction. The locking teeth are formed at least in part by radially extending notches cut through the flange and an integral bridge section extends between the teeth in each set to keep the teeth from being bent axially upward as the bolt is tightened down.
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patent: 3332464 (1967-07-01), Castel
patent: 3352344 (1967-11-01), Lanius
patent: 3438416 (1969-04-01), Thurston
Britts Ramon S.
Elco Industries, Inc.
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