Seat height adjustment mechanism for a chair
DCFirst Claim
1. A chair for a person, comprising:
- (a) a seat portion and an arm rest member;
(b) a support leg, said leg including a fluid pressure cylinder connected to said seat portion, said cylinder having vertically extending telescopic upper and lower sections and a valve release member, said valve release member movable between a closed position in which said upper and lower sections are fixed in position relative to each other and an open position in which said upper and lower sections are moveable relative to each other;
(c) an actuator operatively connected to said valve release member and movable between a first position, in which said valve release member is in said closed position, and a second position, in which said valve release member is in said open position;
(d) actuating button means positioned in said arm rest member and movable between a first position and a second position; and
,(e) flexible cable means having a first end connected to said button means and a second end operatively connected to said actuatorwhereby, when said button means is moved from said first position to said second position, said valve release member is moved to said open position so that the height of the chair may be adjusted and when said button means is moved from said second position to said first position, said valve release member is moved to said closed position so that the height of the chair is then fixed.
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Litigations
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Accused Products
Abstract
A chair comprises a seat portion and a support leg including a fluid pressure cylinder. The cylinder has vertically extending telescopic upper and lower sections which are movable between a closed position and an open position. The cylinder also has a valve release member to which an actuator is operatively connected. The valve release member is movable between a first position in which the valve release member is in a closed position and a second position in which the valve release member is in a open position. The actuator has an arm member pivotally mounted on a pivot with respect to the valve. An actuating button, which is positioned proximate the seat portion, is movable between a first position and a second position. A flexible cable having a first end is connected to the button and a second end is operatively connected to the arm member, the ratio of the distance between the pivot and the portion of the arm member to which the cable is affixed to the distance between the pivot member and the valve release member is sufficient to permit the button to be moved from the first position to the second position by the force applied through a finger of the user when the user is seated in the chair.
62 Citations
26 Claims
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1. A chair for a person, comprising:
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(a) a seat portion and an arm rest member; (b) a support leg, said leg including a fluid pressure cylinder connected to said seat portion, said cylinder having vertically extending telescopic upper and lower sections and a valve release member, said valve release member movable between a closed position in which said upper and lower sections are fixed in position relative to each other and an open position in which said upper and lower sections are moveable relative to each other; (c) an actuator operatively connected to said valve release member and movable between a first position, in which said valve release member is in said closed position, and a second position, in which said valve release member is in said open position; (d) actuating button means positioned in said arm rest member and movable between a first position and a second position; and
,(e) flexible cable means having a first end connected to said button means and a second end operatively connected to said actuator whereby, when said button means is moved from said first position to said second position, said valve release member is moved to said open position so that the height of the chair may be adjusted and when said button means is moved from said second position to said first position, said valve release member is moved to said closed position so that the height of the chair is then fixed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A chair for a person comprising:
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(a) a seat portion; (b) a support leg, said leg including a fluid pressure cylinder connected to said seat portion, said cylinder having vertically extending telescopic upper and lower sections and a valve release member, said valve release member movable between a closed position in which said upper and lower sections are fixed in position relative to each other and an open position in which said upper and lower sections are moveable relative to each other; (c) an actuator operatively connected to said valve release member and movable between a first position, in which said valve release member is in said closed position, and a second position, in which said valve release member is in said open position, said actuator having an arm member pivotally mounted on a pivot member with respect to said valve release member; (d) actuating button means positioned proximate said seat portion and movable between a first position and a second position; and
,(e) flexible cable means having a first end connected to said button means and a second end operatively connected to said arm member, a ratio of the distance between said pivot member and the portion of said arm member to which said cable means is affixed to the distance between said pivot member and said valve release member being sufficient to permit said button means to be moved from said first position to said second position by a force applied through a finger of the person when said person is seated in the chair whereby, when said button means is moved from said first position to said second position, said valve release member is moved to said open position so that the height of the chair may be adjusted and when said button means is moved from said second position to said first position, said valve release member is moved to said closed position so that the height of the chair is then fixed. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A chair comprising:
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(a) a seat portion; (b) a support leg, said leg including a fluid pressure cylinder connected to said seat portion, said cylinder having vertically extending telescopic upper and lower sections and a valve release member, said valve release member movable between a closed position in which said upper and lower sections are fixed in position relative to each other and an open position in which said upper and lower sections are moveable relative to each other; (c) flexible cable means having a first end and a second end; (d) an actuator operatively connected to said valve release member and movable between a first position, in which said valve release member is in said closed position, and a second position, in which said valve release member is in said open position, said actuator having a member having a first portion which is pivotally mounted for rotation with respect to said valve release member, a second portion which is connected to said second end of said cable means and a third portion for contacting and moving said valve release member; (e) actuating button means positioned proximate said seat portion and movable between a first position and a second position, said button means is positioned in a housing means and travels inwardly into said housing means as said button means passes from its first position to its second position, said first end of cable means operatively connected to said button means; and
,whereby, when said button means is moved from said first position to said second position, said valve release member is moved to said open position so that the height of the chair may be adjusted and when said button means is moved from said second position to said first position, said valve release member is moved to said closed position so that the height of the chair is then fixed. - View Dependent Claims (25, 26)
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Specification