Expandable legrest for dental chairs

Details Expandable legrest for dental chairs Expandable legrest for dental chairs

1980-05-15

1982-06-29

Mackey, Robert

Chairs and seats

Bottom or back

Framework

297 75, A61G 1500, A47C 750

Patent

active

043369650

ABSTRACT:
A legrest for a dental chair has a telescopically nested section. A cable and pulley system automatically extends the nested section from the legrest as the legrest is moved from a generally vertical position to a generally horizontal position. Bias springs return the section to its nested position as the legrest moves back towards its near vertical position.

REFERENCES:
patent: 156004 (1874-10-01), Wayland
patent: 161887 (1875-04-01), Lambert
patent: 1553689 (1925-09-01), Hill
patent: 2481970 (1949-09-01), Bell
patent: 2918964 (1959-12-01), Braun
patent: 3851870 (1974-12-01), Cook
patent: 3934929 (1976-01-01), Rabinowitz

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