Movable Back Support With Mechanically Advantaged Adjustment
AssigneeConvaid by Etac
InventorPaul Buczek
Life of this patent
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Abstract
Movable back supports that can be moved in many different axes about a seat and fixed in a position desired by a user are contemplated. Movable back supports comprise sliding members, straps, and a tightening mechanism that alters tension in the straps. Contemplated movable back supports can be positioned at a desired height relative to a backrest and at a desired distance from backrest rails of the seat. Furthermore, contemplated movable back supports can be moved forwardly into a back of a user or rearwardly away from the back of the user.
Claims20
A method of positioning a movable back support with respect to a seat having a backrest and left and right backrest rails, comprising:
- loosening one or more of left and right adjustment mechanisms of left and right straps, respectively, of the movable back support;
- positioning the left and right straps along the left and right backrest rails, respectively, to position the back support to (1) a desired height relative to the backrest, and (2) a desired distance from the left and right backrest rails;
- tightening the one or more left and right adjustment mechanisms sufficiently to fix the back support in both the desired height and the desired distance;
- and
- tightening a tightening mechanism to slide left and right sliding members coupled to the left and right straps, respectively, and thereby alter tension in the left and right straps.
A movable back support for use with a seat having a backrest and left and right rails, comprising:
- left and right sliding members;
- the left strap extending between the left sliding member and the left rail, and configured to be height-adjustable along the left rail;
- the right strap extending between the right sliding member and the right rail, and configured to be height-adjustable along the right rail;
- and
- a tightening mechanism configured to mutually slide the left and right sliding members and thereby alter tension in the left and right straps.
Dependencies are inferred from the claim text.