Ceiling insert

Details Ceiling insert Ceiling insert

1994-06-06

1995-11-21

Lindsey, Rodney M.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Internally threaded fastener element, e.g., nut, etc.

Multipart

411 82, 52704, F16B 3708, F16B 3902

Patent

active

054681057

ABSTRACT:
A tapered split nut with depressed by coil spring downward in a central hole of a outer cylinder body is installed so as it can move upward. A hanging bolt is inserted from the bottom while it is pushing said split nut up. Owing to the upward movement of the hanging bolt, the split nut moves downward due to a pushing movement with pressure by the coil spring, and the split nut engages with and bit the thread portion of the hanging bolt.

REFERENCES:
patent: 1736240 (1929-11-01), Wyss
patent: 3151652 (1964-10-01), Zahodiakin
patent: 3151653 (1964-10-01), Zahodiakin
patent: 3313078 (1967-04-01), Rohe
patent: 3339609 (1967-09-01), Cushman
patent: 3504723 (1970-04-01), Cushman et al.
patent: 3579942 (1971-05-01), Cole
patent: 4341053 (1982-07-01), Dettfurth et al.
patent: 4509308 (1985-04-01), Dettfurth et al.
patent: 4974888 (1990-12-01), Childers
patent: 5106251 (1992-04-01), Steinbach
patent: 5240543 (1993-08-01), Fetterhoff et al.

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