Supports – Stand – Horizontally movable support surface
Patent
1997-09-19
1999-10-26
Berger, Derek J.
Supports
Stand
Horizontally movable support surface
248429, F16M 1300
Patent
active
059713429
ABSTRACT:
A biasing structure for biasing a locking pawl-equipped operation rod in a given direction is described. A slit is formed in a rear end of the operation rod. A spring retainer is integrally provided by a bracket through which the operation rod is rotatably connected to a movable rail. The spring retainer includes a rearwardly projected portion whose one surface faces toward a rear end portion of the operation rod and a recess which is formed in a base part of the projected portion and faces toward the rear end portion of the operation rod. A coil spring includes a multi-turned major portion, a front straight portion tangentially extending from a front end of the major portion and a rear straight portion extending radially inward from a rear end of the major portion. Upon assembly of the coil spring, the major portion thereof is disposed on the rear end portion of the operation rod with the front straight portion put in the recess and with the rear straight portion put in the slit while being twisted about its axis against a biasing force produced by the spring. The surface of the rearwardly projected portion is sized and arranged to support the front straight portion of the coil spring when the coil spring is about to be properly assembled.
REFERENCES:
patent: 4742983 (1988-05-01), Nihei
patent: 5028028 (1991-07-01), Yamada et al.
patent: 5167393 (1992-12-01), Hayakawa et al.
patent: 5285993 (1994-02-01), Kamata et al.
patent: 5727768 (1998-03-01), Sakamoto
Hirakui Hidemasa
Kamata Kiyohiko
Kita Shinichiro
Sakai Kiyotaka
Takamura Noboru
Berger Derek J.
King Anita
Ohi Seisakusho Co. Ltd.
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