Adjustable seating
First Claim
1. An apparatus comprisinga base,a seat mounted to be movable forward and backward through a range of motion relative to the base,a seat back mounted to be, during all or at least a portion of operation of the apparatus, simultaneously (a) movable in rotational motion about a physical rotational axis relative to the seat independently of the forward and backward motion of the seat, (b) movable in an upward and downward motion relative to the seat, independently of motion of the seat forward and backward and independently of the rotational motion about the physical rotational axis, (c) biased for the upward motion, and (d) to prevent the rotational motion during at least a portion of operation of the apparatus.
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Accused Products
Abstract
Among other things, a seat includes a base; a back-supporting surface coupled to the base; and a seating surface movable relative to the base in a direction of motion toward and away from the back-supporting surface. The back-supporting surface has a lower portion nearer the seating surface that is movable, relative to an upper portion of the back-supporting surface that is farther from the seating surface, in the direction of motion as the seating surface moves in the direction of motion.
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Citations
28 Claims
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1. An apparatus comprising
a base, a seat mounted to be movable forward and backward through a range of motion relative to the base, a seat back mounted to be, during all or at least a portion of operation of the apparatus, simultaneously (a) movable in rotational motion about a physical rotational axis relative to the seat independently of the forward and backward motion of the seat, (b) movable in an upward and downward motion relative to the seat, independently of motion of the seat forward and backward and independently of the rotational motion about the physical rotational axis, (c) biased for the upward motion, and (d) to prevent the rotational motion during at least a portion of operation of the apparatus.
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16. A method comprising
as a sitter is sitting for a period in a seat that has a base, a seat, and a seat back, moving the seat forward and backward through a range of motion relative to the base, during all or at least a portion of the period when the sitter is sitting, simultaneously (a) moving the seat back in rotational motion about a physical rotational axis relative to the seat independently of the forward and backward motion of the seat, (b) moving the seat back in an upward and downward motion relative to the seat, independently of the motion of the seat forward and backward and independently of the rotational motion about the physical rotational axis, and (c) biasing the seat back for the upward motion.
Specification