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:
Sep. 12, 1989
Filed:
Oct. 03, 1988
William H Marshall, Peoria, IL (US);
Other;
Abstract
A surgeon's operating stool 10 is provided which is readily movable when not occupied by a person but resists undesirable movement once a person has occupied the stool 10. The stool is provided with a series of rollers 20 which normally support the stool 10 and allow for movement in any desired direction. However, the rollers 20 include a spring loaded collapsible mechanism which, when occupied by a person, forces the rollers 20 to retract into the base 12 of the stool 10 and causes a nonskin surface 38 to engage the floor. The base 12 of the stool 10 is configured to receive the feet of a person using the stool, such that a person using the stool in either a standing or sitting position forces the retracting mechanism to remain retracted and thereby prevent undesirable movement during use. The stool 10 also includes a hydraulic height adjusting mechanism which is readily adjustable via foot operation. It is of particular importance in a sterile environment that a surgeon be capable of readily adjusting the stool 10 height without use of his sterilized hands. Further, a rotary coupling 28 interconnects a seat 26 and the support rod 22 of the stool 10 such that the seat 26 is free to rotate in a plane substantially parallel to the floor.