All-purpose rocking, swiveling, reclining, and lifting chair
First Claim
1. A power operated, multi-position chair having a main frame, a seat attached in a pivotal manner to the mainframe, two armrests attached to the seat, a back attached at back pivots to the main frame, a footrest attached to the mainframe, and a switch to control the chair'"'"'s positions comprising:
- (a) a recline mechanical linkage that allows the chair to operate in a recline mode wherein it reclines the back, lifts the front of the seat, and lifts the footrest;
(b) a seat lift mechanical linkage that allows the chair to operate in a seat lift mode wherein it lifts the back of the seat;
(c) a guide roller mechanically linked to both the recline mechanical linkage and the seat lift mechanical linkage;
(d) a guide channel in which the guide roller operates to activate either the recline mechanical linkage or the seat lift mechanical linkage; and
(e) a power source with mechanical means to move the guide roller in the guide channel so that the chair can operate through its recline mode and seat lift mode;
the power source with mechanical means comprising;
(f) a motor;
(g) a motor mount plate mounted in a pivotal manner on the main frame of the chair;
(h) a first power screw connected to the motor;
(i) a power cross bar with a first nut through which the power screw turns to move the power cross bar forward away from the motor as the screw turns counterclockwise (as viewed from the motor) and to pull the power cross bar toward the motor as the power screw turns clockwise (as viewed from the motor); and
(j) a lower power bar connected in a pivotal manner at its front end to the power cross bar and connected at its rear end to the guide roller.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides for a power operated chair that can be operated in a rock and swivel, recline, or lift mode or any combination thereof. The chair is specifically designed to prevent the rocking and swiveling motion when the occupant is using the lift or recline features of the chair. The chair uses a recline mechanical linkage and a seat lift mechanical linkage that are mechanically linked by a guide roller in a guide channel which permits the use of a single drive motor and provides for a smooth transition from the recline mode to the lift mode. The guide roller and guide channel also prevent the inadvertent lifting of the seat if the back of the chair is forcibly reclined.
44 Citations
19 Claims
-
1. A power operated, multi-position chair having a main frame, a seat attached in a pivotal manner to the mainframe, two armrests attached to the seat, a back attached at back pivots to the main frame, a footrest attached to the mainframe, and a switch to control the chair'"'"'s positions comprising:
-
(a) a recline mechanical linkage that allows the chair to operate in a recline mode wherein it reclines the back, lifts the front of the seat, and lifts the footrest; (b) a seat lift mechanical linkage that allows the chair to operate in a seat lift mode wherein it lifts the back of the seat; (c) a guide roller mechanically linked to both the recline mechanical linkage and the seat lift mechanical linkage; (d) a guide channel in which the guide roller operates to activate either the recline mechanical linkage or the seat lift mechanical linkage; and (e) a power source with mechanical means to move the guide roller in the guide channel so that the chair can operate through its recline mode and seat lift mode;
the power source with mechanical means comprising;(f) a motor; (g) a motor mount plate mounted in a pivotal manner on the main frame of the chair; (h) a first power screw connected to the motor; (i) a power cross bar with a first nut through which the power screw turns to move the power cross bar forward away from the motor as the screw turns counterclockwise (as viewed from the motor) and to pull the power cross bar toward the motor as the power screw turns clockwise (as viewed from the motor); and (j) a lower power bar connected in a pivotal manner at its front end to the power cross bar and connected at its rear end to the guide roller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
Specification