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:
Jun. 23, 1987
Filed:
Apr. 12, 1985
Donald W Schoendorfer, Santa Ana, CA (US);
Warren P Williamson, IV, Huntington Beach, CA (US);
Hemascience Laboratories, Inc., Santa Ana, CA (US);
Abstract
In a disposable biomedical system for processing fluids in a closed environment such as a plasmapheresis system, comprising a plastic rotor mounted for rotation on a pivot pin bearing and a seal, particularly a silicone lubricated O-ring seal, between the rotor and pin, the improvement wherein said pivot pin is a molded pivot pin of a hard plastic material having a low coefficient of friction and lubriciousness, and which is capable of being irradiated by gamma radiation for sterilization and modification of the plastic material without degradation or loss of lubricious properties. The pivot pin bearing preferably comprises an injection molded polyamide based resin.