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. 04, 1978
Filed:
Aug. 15, 1977
Applicant:
Inventor:
Fernando Murman, Rancho Palos Verdes, CA (US);
Assignee:
Hydril Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; E21B / ;
U.S. Cl.
CPC ...
2772 / ; 277 73 ; 251 / ;
Abstract
An annular blowout preventer packing unit having a longitudinal axis incorporates metallic inserts having webs that extend both longitudinally and about that axis to define surfaces which have longitudinally facing extents to anchor and resist longitudinal displacement of packer elastomeric material. The webs may typically have upper and lower portions with oppositely directed curvatures, respectively.