Supports – Mirror or picture type – Bracket
Patent
1988-05-06
1990-08-07
Foss, J. Franklin
Supports
Mirror or picture type
Bracket
248179, 411271, A47G 124
Patent
active
049461265
ABSTRACT:
A self-locking screw (30) assures uniform mating and locking between its threads (64) and those (70) of an article (68) into which the screw is threaded. A head (34) includes a central portion (54) and an annular outer portion (52) which surrounds the central portion and which carries the screw threads on its periphery. Slots (18) extend through the head to a base (32) to segregate the head into segments (40). Annularly configured joints (60) respectively join the segments of the outer portion to the central portion and include tubular openings (56, 58) which extend from the joints and which are positioned between the segments of said central and outer portions. A hole (42) including cylindrical (44) and conical (46) portions respectively extend through the base and the head, and from the tubular hole portion and through the head. A bolt (72), including a cylindrical shaft (74) and an enlarged head (76) with a conical surface (78) which joins said head to said shaft and which engages the conical hole portion, first pivots both the central portion and the outer portion segments as a unit about the base to initially lock an upper portion of the screw threads and the article threads together, and then pivots the outer portion segments with respect to both the central portion segments and the base as a unit to lock together the remaining screw threads with substantial uniformity and the threads of the article.
REFERENCES:
patent: 3048416 (1962-08-01), Rogers
patent: 3352343 (1967-11-01), Stitt
patent: 3436050 (1969-04-01), Tibbals
patent: 3700313 (1972-10-01), Karr
patent: 4638486 (1987-01-01), Dost et al.
patent: 4648692 (1987-03-01), Kinoshita
patent: 4657361 (1987-04-01), Eitel
patent: 4680771 (1987-07-01), Koseki
Denson-Low Wanda K.
Foss J. Franklin
Hughes Aircraft Company
Streeter William J.
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