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:
Jun. 06, 1995
Filed:
Jan. 18, 1994
Robert C Cummins, Tucson, AZ (US);
Other;
Abstract
A cable take-up includes a cylindrical case and a plug mechanically attached to the case and extending axially from the case. Within the case, a cable is wound onto a rotating spool biased by a spring to retract the cable. A ratchet prevents the cable from retracting and a release for the ratchet is accessible from outside of the case. The cable preferably is a flat ribbon of Kevlar.RTM. plastic having several wires embedded therein. One end of the cable is connected to earpieces and the other end of the cable is connected to the plug through a commutator. The commutator includes a first disk having resilient, conductive contacts attached to the plug and a second, rotating disk having concentric, conductive stripes attached to the cable and rubbing on the conductive contacts.