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:
Jul. 10, 2001
Filed:
Jan. 15, 1999
Richard J. Bartow, Battle Creek, MI (US);
James R. Hanson, Portage, MI (US);
Richard L. McDaniel, Constantine, MI (US);
Stryker Corporation, Kalamazoo, MI (US);
Abstract
A wheeled carriage for supporting a patient in a substantially horizontal position, the wheeled carriage has thereon a patient support having head and foot ends and a wheeled base supported by castered wheels. An auxiliary wheel and a wheel support structure therefor suspendedly mount the auxiliary wheel at its axis to the wheeled base at a distance L in a horizontal direction from the center of gravity of the wheeled carriage along the length of the wheeled base when the auxiliary wheel is engaged with the floor surface. A moment M,is defined by the distance L multiplied by a force F,, the force F,being defined by the mass of the carriage or carriage and patient at the center of gravity. The moment M,is greater at all times than a moment M,to prevent teetering of the wheeled carriage, where moment M,is defined by multiplying the height H by a force F,. The force F,is the force required to move the wheeled carriage. The height H is defined by the vertical distance between the axis of the auxiliary wheel and the relative height of the gripping location where the force F,is applied.