Head-rest device

Details Head-rest device Head-rest device

1984-02-22

1985-10-08

McCall, James T.

Chairs and seats

Headrest

Adjustable rectilinearly vertically

248410, 297391, A47C 110

Patent

active

045456186

ABSTRACT:
A head-rest device is disclosed which comprises a head-rest stay, a head-rest holder mounted to a seat back and a lock mechanism provided within the head-rest holder. The head-rest stay is inserted into its associated head-rest holder. The head-rest stay is formed with two or more pairs of slotted recesses on its circumferential surface. Such pair of slotted recesses are located at required intervals in a vertical direction from each other and correspond to each other in a staggered manner. An engagement body, which has a required thickness and is formed with a stay insertion bore having a diameter substantially equal to that of the head-rest stay, is inclinably inserted via a spring into the head-rest holder. A retaining member is also provided which is capable of retaining the engagement body in its inclined position in which the upper and lower edge portions of the stay insertion bore are engaged with a pair of slotted recesses respectively. The lock mechanism is formed by inserting the spring, engagement body and retaining member into the head-rest holder in this order.

REFERENCES:
patent: 2637313 (1953-05-01), White
patent: 3563602 (1971-02-01), Ohta
patent: 3672722 (1972-06-01), Murcott
patent: 4128274 (1978-12-01), Schmedemann

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