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. 14, 1982
Filed:
Jul. 25, 1979
Applicant:
Inventor:
Werner R Luenser, Blue Island, IL (US);
Assignee:
Ethyl Products Company, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
215330 ; 220289 ;
Abstract
A thermoplastic cap having improved anti-backoff characteristics features a primary helical thread and a coaxial secondary thread. The cap is of a thermoplastic material having an elastic modulus in flexure within the range of from about 0.2.times.10.sup.5 to about 10.sup.6 pounds per square inch so that the secondary helical thread will flex in response to tightening torque.