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US 8,783,709 B1Granted
Person transporting apparatus and method
OwnerKarl H. Westermann, Mary Kay Schittoninventors
Life of this patent
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Abstract
The apparatus of the present disclosure is an improvement on known wheelchairs and other known devices for transporting elderly, infirm, injured, handicapped, disabled, or otherwise mobility-impaired individuals. The present disclosure provides a seat that is adjustable in height, tilt angle, and orientation, relative to the supporting surface and frame of the apparatus. In some embodiments, the height adjustment is provided via a hydraulic lift cart.
Claims15
An apparatus for assisting the moving of individuals with mobility difficulties, the apparatus comprising:
- a supporting frame structure, wherein said supporting frame structure transfers weight of patient to supporting surface, and wherein said supporting frame structure comprises:
- at least one telescopic vertical member, wherein said telescopic vertical member transfers patient's weight to supporting surface;
- and
- at least one bracing member coupled to said telescopic vertical member, wherein said bracing member enables rigidity of said frame structure by the transfer of forces between said at least one telescopic vertical member,
- a pivotal seat assembly, said pivotal seat assembly comprising:
- a base plate coupled to supporting frame, whereby changes in length of said telescopic vertical member causes a corresponding change in height of said base plate relative to the supporting surface, wherein said base plate has a plurality of fixable heights relative to the supporting surface;
- a seat platform coupled to said base plate by a pivot joint, wherein said platform:
- rotates through a defined range relative to said base plate;
- supports the weight of the patient by permitting the transfer of force through said base plate to said at least one vertical member,
- a seat back flexibly coupled to said seating platform, wherein angle between said seat back and seat platform has a defined range,
- a plurality of wheels connected to said supporting frame, wherein said wheels permit transient movement of said apparatus across the supporting surface;
- a rear handle removably coupled to said frame, wherein said rear handle is a u-bar handle;
- at least one forward handle removably coupled to said frame, wherein said at least one front handle is a bar handle;
- a hydraulic cylinder accommodated within said at least one telescopic vertical member;
- a hydraulic system for controlling the height of the base plate relative to the supporting surface, wherein said hydraulic system comprises:
- a hydraulic pump;
- at least one feeder tube connected to said hydraulic pump and said hydraulic cylinder located in at least one telescopic vertical member, wherein said at least one feeder tube accommodates the flow of pressurized fluid from said hydraulic pump to said hydraulic cylinder;
- a hydraulic pump handle connected to said hydraulic pump, wherein actuation of said hydraulic pump actuates the flow of pressurized fluid into said hydraulic cylinder;
- whereby said at least one telescopic vertical members extend in length,
- a bleed valve coupled to said return tube, said valve having a release, and a non-release stage;
- a return tube connected to said hydraulic cylinder and said hydraulic pump, wherein activation of said release stage of said valve permit the outflow of fluid from hydraulic cylinder, whereby said at least one telescopic vertical member reduces in length.
18 more elements
An apparatus for assisting the moving of individuals with mobility difficulties, the apparatus comprising:
- a supporting frame structure, wherein said supporting frame structure transfers weight of patient to supporting surface, and wherein said supporting frame structure comprises:
- at least one telescopic vertical member, wherein said telescopic vertical member transfers patient's weight to supporting surface;
- and
- at least one bracing member coupled to said telescopic vertical member, wherein said bracing member enables rigidity of said frame structure by the transfer of forces between said at least one telescopic vertical member,
- a pivotal seat assembly, said pivotal seat assembly comprising:
- a base plate coupled to supporting frame, whereby changes in length of said telescopic vertical member causes a corresponding change in height of said base plate relative to the supporting surface, wherein said base plate has a plurality of fixable heights relative to the supporting surface;
- a seat platform coupled to said base plate by a pivot joint, wherein said platform:
- rotates through a defined range relative to said base plate;
- supports the weight of the patient by permitting the transfer of force through said base plate to said at least one vertical member,
- a seat back flexibly coupled to said seating platform, wherein angle between said seat back and seat platform has a defined range,
- a plurality of wheels connected to said supporting frame, wherein said wheels permit transient movement of said apparatus across the supporting surface;
- a rear handle removably coupled to said frame, wherein said rear handle is a u-bar handle;
- at least one forward handle removably coupled to said frame, wherein said at least one front handle is a bar handle;
- wherein said front handles and said rear handles are independently removable;
- wherein the coupling of:
- said pivotal seat assembly to said supporting frame structure;
- said at least one telescopic vertical member to said at least one bracing member;
- permit the rotation of the respective elements, whereby the apparatus is collapsible;
- whereupon said collapse of apparatus:
- base plate aligns parallel to supporting surface thus presenting coupling locations of said at least one forward handle and rear handle, contained within said base plate, whereby enabling convenient reinsertion of said at least one forward handle and said rear handle.
17 more elements
Dependencies are inferred from the claim text.