Chair height adjustment mechanism
AssigneeLeggett & Platt Canada Co.
InventorsGerard J. Matern, David Lloyd Hobb, Kerry J. Brodrecht
Life of this patent
Estimating the term…
Abstract
A chair control mechanism has a rotatable shaft with a radially extending member abutting an actuating finger of a gas control cylinder. A slider may push a second radially extending member of the rotatable shaft in order to rotate the shaft. The slider has a tab extending into the mouth of the head of a further shaft which is rotated by a user operated handle. Thus, when the user operates the handle, the head of the further shaft causes the slider to slide.
Claims16
A control for a gas cylinder of a chair, comprising:
- a) first rotatable member with a first radial projection and a second radial projection, said first member rotatably mounted such that said first projection extends over an opening for receiving a gas control finger, said first rotatable member oriented such that when said first member rotates said first projection may move toward said opening;
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- b) means for rotating said first rotatable member comprising a slider member mounted for non-rotational linear sliding movement such that said slider may be slid so as to push said second projection and actuating means for sliding said slider member, said actuating means comprising a second rotatable member, wherein said second rotatable member has a radially directed channel such that said channel rotates with rotation of said second rotatable member, and wherein said sliding member further comprises a tab received by said channel.
A chair control mechanism comprising:
- a) a first rotatable shaft with a first radially extending member overlying an opening for receiving a gas control cylinder actuator and a second radially extending member;
- b) an actuator for rotating said first rotatable shaft, said actuator comprising a slider mounted for non-rotational linear sliding movement, said slider for pushing against said second radially extending member and a second rotatable shaft with a radially directed channel formed therein and wherein said slider comprises a tab received by said channel.
A control for a gas cylinder of a chair, comprising:
- a) a first rotatable member with a first radial projection and a second radial projection, said member rotatably mounted such that said first projection extends over an opening for receiving a gas control finger, said rotatable member oriented such that when said member rotates in a first direction, said first projection moves toward said opening;
- b) a slider member which is free of any connection to said second radial projection and which is mounted for non-rotational linear sliding movement such that said slider member may be slid so as to push said second projection in order to rotate said member in said first direction;
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- c) a second rotatable member for actuating said slider member, said second rotatable member having a radially directed channel such that said channel rotates with rotation of said second rotatable member, and wherein said sliding member further comprises a tab received by said channel.
A chair control mechanism comprising:
- a) a first rotatable shaft with a first radially extending member overlying an opening for receiving a gas control cylinder actuator and a second radially extending member;
- b) an actuator for rotating said first rotatable shaft, said actuator comprising a slider for acting against said second radially extending member and a second rotatable shaft with a radially directed channel and wherein said slider comprises a tab received by said channel, said radially directed channel tapering from a larger radially inwardly positioned base to a smaller radially outermost neck.
Dependencies are inferred from the claim text.