The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 1992
Filed:
Jan. 03, 1992
Gary L Bartley, Kalamazoo Township, Kalamazoo County, MI (US);
Louis A Haddock, Jr, Emmett Township, Calhoun County, MI (US);
John S Messner, Battle Creek, MI (US);
Stryker Corporation, Kalamazoo, MI (US);
Abstract
A hospital bed includes a base supported by casters, and a lift arrangement vertically movably supports a patient support section on the base. The lift arrangement includes a threaded first member secured to and projecting downwardly from the patient support section, a rotatably supported tubular second member having an internal thread which engages the threaded first member and having an external thread, and a further member which is supported on the base and has a thread engaging the external thread on the tubular second member. In one embodiment, the further member is a nut fixedly supported on the base, and a drive member rotatably supported on the base has an opening through which the second member extends and has a key portion which slidably engages an axially extending slot provided in the second member. In a different embodiment, the further member is itself rotatably supported on the base and has therethrough an opening through which the second member extends, the thread on the further member being an internal thread in the opening.