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. 24, 1992
Filed:
Oct. 19, 1990
David H Shulman, Hunt Valley, MD (US);
Barry R Berman, Owings Mills, MD (US);
Paul Varga, Salisbury, MD (US);
Other;
Abstract
A device for dilating and propping open a patient's jaws. The device includes a pair of outwardly-extending upper arms and a pair of outwardly extending lower arms. Each of the arms has a respective distal end which as a pad pivotally mounted thereon which contacts the patient's jaws during use thereof, and a respective proximal end which is pivotably secured to the housing. Means is provided for pivoting the distal ends of the upper arms towards and away from the distal end of the lower arms such that the distal ends move substantially arcuately between the open and closed positions. A worm and worm wheel arrangement is provided for pivoting the arms, such that the spacing therebetween is infinitely variable.