Kinematic motion of articulated bed
AssigneeSunrise Medical HHG Inc.
InventorsDean R. Sommerfeld, Todd C. Kramer
Life of this patent
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Abstract
An articulated bed comprises a main frame supported by a leg tube. An upper portion of the leg tube is longitudinally and pivotally displaceable relative to the main frame at an upper movable pivot point. A lower portion of a stabilizer is connected to a lower intermediate portion of the leg tube at a lower orbital pivot point. An upper portion of the stabilizer is pivotally connected relative to said main frame at an upper fixed pivot point. A wheel is pivotally attached to a lower portion of the leg tube at a pivot axis. The upper movable pivot point, the lower orbital pivot point, and the pivot axis do not coalign and the distance between the upper fixed pivot point and the upper movable pivot point are maximized when the main frame is in a raised position.
Claims20
An articulated bed comprising:
- a main frame;
- a leg tube having an upper portion that is longitudinally and pivotally displaceable relative to said main frame at an upper movable pivot point;
- a stabilizer having an upper portion and a lower portion, a lower intermediate portion of said leg tube being pivotally connected to said lower portion of said stabilizer at a-lower orbital pivot point, said upper portion of said stabilizer being pivotally connected relative to said main frame at an upper fixed pivot point;
- and
- a wheel pivotally attached to a lower portion of said leg tube at a pivot axis, wherein said upper movable pivot point said lower orbital pivot point, and said pivot axis do not coalign and the distance between said upper fixed pivot point and said upper movable pivot point being maximized when said main frame is in a raised position.
An articulated bed comprising:
- a main frame;
- a bent leg tube having an upper portion that is longitudinally and pivotally displaceable relative to said main frame at an upper movable pivot point;
- a stabilizer having an upper portion and a lower portion, a lower intermediate portion of said bent leg tube being pivotally connected to said lower portion of said stabilizer at a lower orbital pivot point, said upper portion of said stabilizer being pivotally connected relative to said main frame at an upper fixed pivot point;
- and
- a wheel pivotally attached to a lower portion of said bent leg tube at a pivot axis, wherein the elevation of said upper fixed pivot point is greater than the elevation of said upper movable pivot point.
An articulated bed comprising:
- a main frame;
- a bent leg tube having an tipper portion that is longitudinally and pivotally displaceable relative to said main frame at an upper movable pivot point;
- a stabilizer having an upper portion and a lower portion, a lower intermediate portion of said bent leg tube being pivotally connected to said lower portion of said stabilizer at a lower orbital pivot point, said upper portion of said stabilizer being pivotally connected relative to said main frame at an upper fixed pivot point;
- and
- a wheel pivotally attached to a lower portion of said bent leg tube at a pivot axis, wherein the distance between said upper fixed pivot point and said lower orbital pivot point, said upper movable pivot point and said lower orbital pivot point, and said lower orbital pivot point and said pivot axis are not equal distances.
An articulated bed comprising:
- a main frame supported by a pair of opposing legs and corresponding stabilizers, wherein
- each said leg comprising a bent leg tube having an upper portion that is longitudinally and pivotally displaceable relative to said main frame at an upper movable pivot point, and wherein
- each said stabilizer having an upper portion and a lower portion, a lower intermediate portion of each said bent leg tube being pivotally connected to said lower portion of a corresponding one of said stabilizers at a lower orbital pivot point, said upper portion of each said stabilizer being pivotally connected relative to said main frame at an upper fixed pivot point, and wherein
- said lower portion of each said bent leg tube having a wheel pivotally attached thereto at a pivot axis, wherein said upper movable pivot point, said lower orbital pivot point, and said pivot axis do not coalign and the distance between said upper fixed pivot point and said upper movable pivot point being maximized when said main frame is in a raised position.
Dependencies are inferred from the claim text.