# US 8,739,329 B2 · Bed lifting apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,739,329 B2 - Document ID: US8739329B2 - Status: Granted - Kind: B2 - Application number: 13/878,951 - Filed: 2011-10-13 - Published: 2013-11-07 - Granted: 2014-06-03 - Earliest claimed: 2010-10-15 - Assignees: Griffith Hack - Applicants: John Koorey - Inventors: John Koorey - Web page: https://patentgrep.com/patent/US8739329B2 ## CPC - A47C 31/00: Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets - A47C 19/045: {with entire frame height or inclination adjustments} - A47C 21/028: {Holders for facilitating making the bed} - A47C: CHAIRS; SOFAS; BEDS ## Abstract A bed lifting apparatus comprising a base and a support frame connected by at least one linkage arm, the at least one linkage arm including at least one biasing arrangement arranged to maintain the base and the support frame in a spaced apart relationship, wherein, in use, when a bed is located on the support frame, the bed is maintained in a spaced apart relationship from a floor surface. ## Claims ### Claim 1 A bed lifting apparatus comprising: a base and a support frame connected by at least one linkage arm; and the at least one linkage arm including at least one biasing arrangement arranged to maintain the base and the support frame in a spaced apart relationship; wherein, in use, when a bed is located on the support frame, the bed is maintained in a spaced apart relationship from a floor surface; and wherein the biasing arrangement includes at least one resilient member arranged to maintain the base and the support frame in the spaced apart relationship; and wherein the resilient member includes at least one torsion spring and at least one gas spring arranged to cooperate to maintain the base and the support frame in the spaced apart relationship; and wherein the at least one torsion spring is arranged to release potential energy in a rotational manner to thereby effect rotation of the at least one linkage arm. ### Claim 2 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the support frame is arranged to move into a proximal relationship with the base when a force is applied in opposition to the biasing arrangement. ### Claim 3 (depends on 2) A bed lifting apparatus in accordance with claim 2, wherein movement is effected when the force is applied on the bed or support frame in a direction towards the base. ### Claim 4 (depends on 2) A bed lifting apparatus in accordance with claim 2, further comprising a locking arrangement arranged to lock the support frame in the proximal relationship with the base. ### Claim 5 (depends on 4) A bed lifting apparatus in accordance with claim 4, wherein the locking arrangement is disposed on the base. ### Claim 6 (depends on 4) A bed lifting apparatus in accordance with claim 4, wherein the locking arrangement is arranged to penetrate an aperture of the support frame to lock the support frame with the base. ### Claim 7 (depends on 4) A bed lifting apparatus in accordance with claim 4, wherein the locking arrangement is in communication with an actuator arranged to extend the locking arrangement into and retract the locking arrangement from the aperture of the support frame. ### Claim 8 (depends on 7) A bed lifting apparatus in accordance with claim 7, wherein the actuator includes a foot operated switch. ### Claim 9 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the biasing arrangement is arranged to cooperate with the at least one linkage arm to maintain the support frame in a spaced apart relationship with the base. ### Claim 10 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the biasing arrangement is arranged to capture energy when the support frame is moved into the proximal relationship with the base. ### Claim 11 (depends on 1) A bed lifting apparatus in accordance with claim 1 comprising two linkage arms. ### Claim 12 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein each of the two linkage arms includes at least one cross member. ### Claim 13 (depends on 12) A bed lifting apparatus in accordance with claim 12, wherein the cross members are arranged to connect to the biasing arrangement. ### Claim 14 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the at least one linkage arm is rotatably connected to the support frame and the base, wherein the at least one torsion spring is arranged to release potential energy in a rotational manner to thereby effect rotation of the at least one linkage arm relative to the base, and wherein rotation of the at least one linkage arm relative to the base elevates the support frame. ### Claim 15 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the torsion spring is disposed adjacent to a connection connecting the base to the at least one linkage arm. ### Claim 16 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the gas spring is disposed between the base and the at least one linkage arm. ### Claim 17 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the gas spring is disposed between the support frame and the at least one linkage arm. ### Claim 18 (depends on 17) A bed lifting apparatus in accordance with claim 17, wherein the gas spring is engaged to the at least one linkage arm at or near a midpoint of the at least one linkage arm. ### Claim 19 (depends on 1) A bed lifting apparatus in accordance with claim 1, further comprising at least one land arranged to engage to the bed. ### Claim 20 (depends on 19) A bed lifting apparatus in accordance with claim 19, wherein the at least one land is disposed on the support member. ### Claim 21 (depends on 19) A bed lifting apparatus in accordance with claim 19, wherein the at least one land is telescopically extendable from the support member to vary the width of the support member. ### Claim 22 (depends on 19) A bed lifting apparatus in accordance with claim 19, wherein the at least one land includes at least one aperture for engagement to the bed. ### Claim 23 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the base includes at least one cross member. ### Claim 24 (depends on 1) A bed lifting apparatus in accordance with claim 1, wherein the support frame includes at least one cross member. ### Claim 25 A bed lifting apparatus comprising: a base and a support frame connected by at least one linkage arm; and the at least one linkage arm including at least one biasing arrangement arranged to maintain the base and the support frame in a spaced apart relationship; wherein, in use, when a bed is located on the support frame, the bed is maintained in a spaced apart relationship from a floor surface; and wherein the biasing arrangement includes at least one torsion spring and at least one gas spring arranged to cooperate to maintain the base and the support frame in the spaced apart relationship; and wherein the at least one torsion spring is arranged to release potential energy in a rotational manner to thereby effect rotation of the at least one linkage arm. ### Claim 26 A bed lifting apparatus comprising: a base and a support frame connected by at least one linkage arm; and the at least one linkage arm including at least one biasing arrangement arranged to maintain the base and the support frame in a spaced apart relationship; wherein, in use, when a bed is located on the support frame, the bed is maintained in a spaced apart relationship from a floor surface; and wherein the biasing arrangement includes at least one resilient member arranged to maintain the base and the support frame in the spaced apart relationship; wherein the resilient member includes at least one torsion spring and at least one gas spring arranged to cooperate to maintain the base and the support frame in the spaced apart relationship; and wherein the torsion spring is disposed adjacent to a connection connecting the base to the at least one linkage arm.