# US 11,077,002 B1 · Power operated lift chair > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,002 B1 - Document ID: US11077002B1 - Status: Granted - Kind: B1 - Application number: 16/229,275 - Filed: 2018-12-21 - Granted: 2021-08-03 - Earliest claimed: 2017-12-21 - Applicants: David M. Crump - Inventors: David M. Crump - Web page: https://patentgrep.com/patent/US11077002B1 ## CPC - A61G 5/1059: {adjusting the height of the seat} - A61G 5/1067: {adjusting the backrest relative to the seat portion} - A61G 5/04: motor-driven (A61G5/06 takes precedence; motor-operated rests A61G5/12; for vehicles with handlebars, equipped with three or more wheels B62K5/003, B62K5/023) - A61G 5/1045: {for the seat portion} - A61G 5/122: {for the back} - A61G 5/125: {for arms} - A61G 5/14: Standing-up or sitting-down aids - A61G 2203/14: Joysticks - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) ## Abstract The invention generally relates to a power operated lift chair. The power operated lift chair includes a chair assembly, a support assembly and a lifting assembly. The chair assembly includes a vertical back support, a back cushion attached to the vertical back support, a horizontal seat support and a seat cushion attached to the horizontal seat support. The support assembly includes a horizontal beam, a vertical guide post extending upward from the horizontal beam, a guide bracket connected to the chair assembly, at least one horizontal support member extending outward perpendicularly from the horizontal beam and a support platform. The lifting assembly includes a lifting rod positioned on the support platform and a locking collar connected to the lifting rod and the guide bracket. The lifting rod is configured to rotate to lift and lower the chair assembly. ## Claims ### Claim 1 A power operated lift chair, comprising: a chair assembly; a support assembly connected to and configured to provide support for the chair assembly; the support assembly having a generally open front portion configured to provide access to the chair assembly; and a lift assembly connected to the chair assembly and the support assembly; the lift assembly configured to provide linear, vertical movement of the chair assembly between a lower position and an upper position; wherein the lifting assembly further comprises: a generally vertical guide post connected to the horizontal crossbeam; a guide bracket connected to the vertical guide post and connected to the chair assembly; a lifting rod attached to the support assembly and extending generally parallel to the vertical guide post; wherein said lifting rod comprises a worm gear, a screw shaft, a drive screw or other means configured to provide linear, vertical movement of the chair assembly between the lower position and the upper position; and a locking collar configured to be connected to the lifting rod and the guide bracket. ### Claim 2 (depends on 1) The chair of claim 1 wherein the chair assembly further comprises: a vertical back support; a back cushion attached to the vertical back support; a horizontal seat support; and a chair cushion removably and swivelably attached to the horizontal seat support. ### Claim 3 (depends on 1) The chair of claim 1 wherein the chair assembly is positioned adjacent to a ground or floor in the lower position. ### Claim 4 (depends on 1) The chair of claim 1 wherein the support assembly further comprises a generally horizontal crossbeam intermediate of horizontal support members extending generally perpendicular from the horizontal crossbeam. ### Claim 5 (depends on 1) The chair of claim 1 wherein the support assembly further comprises a support platform. ### Claim 6 (depends on 5) The chair of claim 5 wherein said support platform extends from the horizontal crossbeam generally in an opposite direction from the horizontal support members. ### Claim 7 (depends on 1) The chair of claim 1 wherein said chair assembly further comprises a pair of arms. ### Claim 8 (depends on 7) The chair of claim 7 wherein the arms are pivotally attached to the chair assembly. ### Claim 9 (depends on 1) The chair of claim 1 further comprising a motor connecting to the lifting rod. ### Claim 10 (depends on 9) The chair of claim 9 further comprising a movement controller in communication with the motor and configured to control movement of the chair assembly between the lower position and the upper position. ### Claim 11 (depends on 1) The chair of claim 1 further comprising a plurality of wheels configured to move the power operated lift chair along a ground or floor. ### Claim 12 A power operated lift chair, comprising: a chair assembly; a support assembly connected to and configured to provide support for the chair assembly; the support assembly having a generally open front portion configured to provide access to the chair assembly; and a lift assembly connected to the chair assembly and the support assembly; the lifting assembly further comprising: a generally vertical guide post connected to the support assembly; a guide bracket connected to the vertical guide post and connected to the chair assembly; a lifting rod attached to the support assembly and extending generally parallel to the vertical guide post; and a locking collar configured to be connected to the lifting rod and the guide bracket; wherein the lift assembly is configured to move the chair assembly between an upper position and a lower position; wherein the chair assembly is positioned adjacent to a ground or floor in the lower position. ### Claim 13 (depends on 12) The chair of claim 12 further comprising a plurality of wheels configured to move the power operated lift chair along the ground or floor. ### Claim 14 (depends on 12) The chair of claim 12 wherein said chair assembly further comprises a pair of arms pivotally attached to the chair assembly. ### Claim 15 (depends on 12) The chair of claim 12 wherein the chair assembly further comprises: a vertical back support; a back cushion attached to the vertical back support; a horizontal seat support; and a chair cushion removably and swivelably attached to the horizontal seat support. ### Claim 16 (depends on 12) The chair of claim 12 wherein the support assembly further comprises a generally horizontal crossbeam intermediate of horizontal support members extending generally perpendicular from the horizontal crossbeam. ### Claim 17 (depends on 12) The chair of claim 12 wherein the lifting rod comprises a worm gear, a screw shaft, a drive screw or other means configured to provide linear, vertical movement of the chair assembly between the lower position and the upper position. ### Claim 18 (depends on 17) The chair of claim 17 further comprising a motor connecting to the lifting rod. ### Claim 19 (depends on 18) The chair of claim 18 further comprising a movement controller in communication with the motor and configured to control movement of the chair assembly between the lower position and the upper position.