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:
Aug. 31, 1976
Filed:
Mar. 28, 1975
Applicant:
Inventors:
James C Fletcher, , US;
Howard F Broyles, La Crescenta, CA (US);
Jovan Moacanin, Los Angeles, CA (US);
Edward F Cuddihy, Tujunga, CA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B29D / ; B29H / ;
U.S. Cl.
CPC ...
264129 ; 264161 ; 264219 ; 264304 ; 264305 ; 264308 ; 264310 ; 264318 ; 264334 ; 427230 ; 427385 ;
Abstract
Annular elastomeric bodies having intricate shapes are cast by dipping a heated, rotating mandrel into a solution of the elastomer, permitting the elastomer to creep into sharp recesses, dryng the coated mandrel and repeating the operation until the desired thickness has been achieved. A bladder for a heart assist pump in which a cylindrical body terminating in flat, sharp horizontal flanges fabricated by this procedure has been subjected to over 2,500 hours of simulated life conditions with no visible signs of degradation.