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:
Jul. 02, 1991
Filed:
Nov. 30, 1989
David D Archer, St. Thomas, VI (US);
Other;
Abstract
A telephone handset that has a light bulb disposed on it has a special switch that allows the light to automatically illuminate upon using the phone. The switch changes from an open position to a closed one upon a change in the orientation of gravity. One embodiment of the switch includes a hollow chamber having two separate contact plates disposed at one end and a freely sliding conductive manner that comes into contact with the contacts upon picking up the phone. A second switch embodiment includes three parallel pins with a central one the pins having a hanging pivoting member that serves to contact one of the other pins upon a change in gravitational orientation. Also included is a removable socket member to facilitate replacement of the bulb.