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US 8,800,081 B2Granted
Bed lift mechanism
AssigneeInvacare Corporation
InventorsRobert R. Bly, Kevin S. Wysocki
Life of this patent
Estimating the term…
Abstract
A bed with a leg assembly coupled to a support link assembly by a joint, the joint comprising a slot having at least two paths. A support link assembly defining a length that automatically varies as the support link assembly moves relative to the leg assembly.
Claims19
A bed comprising:
- a mattress supporting frame;
- a ground engaging element;
- at least one leg assembly having a first end connected to the frame at a first location and a second end connected to the ground engaging element;
- at least one support link assembly comprising:
- a first portion connected to the frame at a second location separate from the first location;
- and
- a second portion coupled to the at least one leg assembly by a joint, the joint comprising a slot having a first path including first and second ends and a concave side and a convex side, and a second path extending from the convex side of the first path intermediate of the first and second ends.
4 more elements
A lift mechanism for a bed comprising:
- at least one leg assembly connected to a frame, the at least one leg assembly being pivotable and slideable with respect to the frame for vertical movement of the frame;
- at least one support link assembly comprising:
- a first portion connected to the frame;
- and
- a second portion connected to the at least one leg assembly by a joint, the joint comprising a slot receiving first and second pins attached to the at least one leg assembly;
- and
- an actuator assembled with the frame, wherein operation of the actuator causes the at least one support link assembly to pivot about a first pivot axis with respect to the frame such that the joint applies a pivoting force to the at least one leg assembly, and the first and second pins travel within the slot to vary an effective length of the at least one support link assembly between the frame and the at least one leg assembly.
4 more elements
A bed comprising:
- a frame;
- a first leg assembly including:
- a first ground engaging element;
- a first leg having a first end pivotally and slideably connected to the frame and a second end connected to the first ground engaging element, the first leg being pivotable and slideable with respect to the frame between first and second positions;
- a first support link coupled between the frame and the first leg;
- and
- a first joint coupling the first support link to the first leg, the first joint being configured to prevent horizontal movement of the first ground engaging element as the first leg moves between the first and second positions, wherein the first joint comprises a slot defining a first path receiving a first pin secured to the first leg and a second path transverse to the first path and receiving a second pin secured to the first leg;
- and
- a second leg assembly including a second ground engaging element and a second leg having a first end connected to the frame and a second end connected to the second ground engaging element, the second leg being pivotable with respect to the frame between first and second positions, wherein the second leg is disconnected from the first leg for independent pivoting movement of each of the first and second legs.
6 more elements
Dependencies are inferred from the claim text.