Head rest apparatus

Details Head rest apparatus Head rest apparatus

1992-09-23

1994-06-21

Gall, Lloyd A.

Chairs and seats

Headrest

Adjustable rectilinearly vertically

297396, A47C 110

Patent

active

053223470

ABSTRACT:
A head rest apparatus comprises a sole stay, a head rest main body movably supported on the sole stay, a guide rod fixed in the head rest main body, a rail disposed in the head rest main body and fixed on the sole stay, a guide member slidably supported on the guide rod and the rail, a screw rotatably supported in the head rest main body, a nut supported on the rail and engaged with the screw, a cushion disposed between the rail and the nut, and a motor connected to the screw or the nut. A load imparted to the head rest main body is absorbed by the sliding movement of the guide member and the distortion of the cushion.

REFERENCES:
patent: 3471198 (1969-10-01), Homier et al.
patent: 4606578 (1986-08-01), Yasui
patent: 4637655 (1987-01-01), Fourrey et al.
patent: 4657304 (1987-04-01), Heesch et al.
patent: 4762367 (1988-08-01), Denton
patent: 4923250 (1990-05-01), Hattori
patent: 5026120 (1991-06-01), Takeda et al.
patent: 5131720 (1992-07-01), Nemoto

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