Horizontal adjustment mechanism for use on a chair seat
First Claim
1. A horizontal adjustment mechanism for use with a chair having a base, a seat supported on the base and defining a fore-to-aft longitudinal axis, and a seat back, the mechanism comprising:
- a first plate adapted to be coupled to the seat, the first plate having an opening;
a second plate adapted to be coupled to the base, the second plate having a plurality of positioning holes arranged in a predetermined pattern, the holes positioned to align with the opening, said second plate being slidably coupled to said first plate such that said first and second plates can move relative to one another along the longitudinal axis of the seat; and
a lever, said lever containing a first mating portion adapted to be releasably received in a recess located in the first plate and a second mating portion including a projection adapted to be releasably received in a plurality of notches located on the second plate wherein said lever is operable to selectively engage the second mating portion and one or more of said notches and is operable to selectively release the second mating portion from one or more of said notches to allow the first plate to move relative to the second plate.
1 Assignment
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Accused Products
Abstract
In a chair having a base, a seat defining a fore-to-aft longitudinal axis, a seat back and a tilt control mechanism, a horizontal adjustment mechanism is provided for allowing fore-to-aft movement of the seat relative to the seat back. The mechanism includes a first plate adapted to be coupled to the seat; a second plate adapted to be coupled either directly to the base or to the tilt control mechanism, the second plate being slidably coupled to the first plate such that the two plates can move relative to one another along the longitudinal axis of the seat; an intermediate element positioned between the first and second plates for facilitating relative sliding movement therebetween, and a handle positioned between first and second plates that selectively positions the first plate in relation to the second plate.
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Citations
33 Claims
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1. A horizontal adjustment mechanism for use with a chair having a base, a seat supported on the base and defining a fore-to-aft longitudinal axis, and a seat back, the mechanism comprising:
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a first plate adapted to be coupled to the seat, the first plate having an opening; a second plate adapted to be coupled to the base, the second plate having a plurality of positioning holes arranged in a predetermined pattern, the holes positioned to align with the opening, said second plate being slidably coupled to said first plate such that said first and second plates can move relative to one another along the longitudinal axis of the seat; and a lever, said lever containing a first mating portion adapted to be releasably received in a recess located in the first plate and a second mating portion including a projection adapted to be releasably received in a plurality of notches located on the second plate wherein said lever is operable to selectively engage the second mating portion and one or more of said notches and is operable to selectively release the second mating portion from one or more of said notches to allow the first plate to move relative to the second plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A horizontal adjustment mechanism for use with a chair having a base, a seat supported on the base and defining a fore-to-aft longitudinal axis, and a seat back, the mechanism comprising:
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a first plate having an opening and being adapted to be coupled to the seat; a second plate having plurality of positioning holes arranged in a predetermined pattern configured to align with said opening in said first plate, said second plate being adapted to be coupled to the base and slidably coupled to said first plate such that said first and second plates can move relative to one another along the longitudinal axis of the seat; and a U-shaped lever, said U-shaped lever containing a mating portion adapted to be releasably received in a first recess located in the first plate and a mating projection adapted to be releasably received in a first set of notches located on the second plate wherein said U-shaped lever is operable to selectively engage the mating projection and one or more of said notches and is operable to selectively release the mating projection from one or more of said notches to allow the first plate to move relative to the second plate; and an intermediate element positioned between said first and second plates for facilitating relative sliding movement therebetween, said intermediate element being integral with a bottom surface of the first plate, the second plate, or both. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification