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. 15, 1990
Filed:
Apr. 20, 1989
Emanuel B Tarrson, Chicago, IL (US);
Dane Maric, Chicago, IL (US);
John O. Butler Company, Chicago, IL (US);
Abstract
A dental floss holder is in the form of a box with a drawer in it. The bottom of the drawer includes a hub which is spring biased to push a bobbin mounted thereon toward an opposite side of the box. The bias is such that the bobbin drags with a predetermined force on an opposite side of the box to maintain tension in the floss. A result is that the bobbin does not unwind while in the holder, thereby precluding a snarled floss line. Also, the tension gives a smooth 'pull' which adds a 'feel' of quality to the floss. The 'feel' does not change as the diameter of the bobbin changes with either an exhaustion of floss or changes in the diameter of a full bobbin. The hub is mounted on a dome having sides with a shape which guides and directs any floss falling off the bobbin back onto it.