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:
Mar. 18, 1997
Filed:
Dec. 15, 1995
Bruce C Johnson, St. Paul, MN (US);
Creative Integration & Design, Inc., St. Paul, MN (US);
Abstract
A dilator formed with a truss with a pair of spaced-apart end surfaces that provides a restoring force therebetween if forced toward one another, this restoring force provided by a resilient band extending between the opposite ends of the truss with a plurality of notches located at each of the ends thereof. The notches exceed at least a third of the thickness of the band and may comprise a separation at the location thereof between selected portions of said first resilient band with this separation surrounded by a corresponding separation edge thereabout intersecting a first surface of the first resilient band. A second and similar band may also be provided in the truss.