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:
May. 26, 1981
Filed:
Sep. 17, 1979
William S Cowan, West University Place, TX (US);
Armco Inc., Middletown, OH (US);
Abstract
A hanger apparatus for suspending an upright inner pipe from an outer pipe including a hanger body carried by the outer pipe, a hanger mandrel carried by the inner pipe, and a split locking ring carried in a recess in the hanger mandrel, the hanger body having a groove for receiving a rib on the locking ring and the hanger mandrel having a load-bearing shoulder received on a corresponding shoulder on the locking ring. The locking ring has a thick main body portion and a thin, flexible skirt depending therefrom. A rib on the hanger mandrel has an upwardly facing lifting surface for contacting a downwardly facing lifting surface formed as an upper wall in a transverse groove in the locking ring main body portion to provide a positive engagement during retrieval of the inner pipe. A guard rib below the lifting rib is releasably coupled to the hanger mandrel so the locking ring can be slipped into the mandrel with a minimum of distortion.