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. 04, 1982
Filed:
Nov. 21, 1980
Seymour Katz, Glen Cove, NY (US);
E-Z-EM Company, Inc., Westbury, NY (US);
Abstract
A first elastic film containing cholesteric liquid crystals and a second elastic protective film having different elasticities are attached to each other solely along the periphery of the two sheets. Differential air pressure applied across the dual film structure causes it to stretch and conform to the body tissues whose temperature variations are being studied. The liquid crystal containing film and the protective film stretch and adjust independently of one another, in response to differential pressure, to squeeze out any air in the space between the two sheets and to avoid puckering or other distortions. The protective film is in contact with the tissue being investigated and provides a barrier to protect the liquid crystals from contamination yet conveys the underlying temperature accurately to the liquid crystals.