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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.:

US 5166695 B1

PDFFull Text
Date of Patent:
Nov. 24, 1992

Filed:

Jul. 15, 1991

Auto-extending antenna

Applicant:
Inventors:

Hiang B Chan, Singapore, SG;

Her S Tan, Singapore, SG;

Assignee:

Motorola, Inc., Schaumburg, IL (US);

Attorneys:

Nichols; Daniel K.

Agon; Juliana

Primary Examiner:

Michael C Wimer

Assistant Examiner:

Tan Ho

Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343702 ; 343901 ;
Abstract

An auto-extending antenna for a portable radio having a housing which can be closed is inserted into an aperture within the housing. As the housing of a radio using the auto-extending antenna is opened, a toothed wheel attached to the opening portion of the housing is rotated. This toothed wheel is coupled to a second toothed wheel and causes the second toothed wheel to rotate. The second toothed wheel is connected to a first hollow tube which has two opposing slots extending along almost the entire length of the tube. An antenna is inserted into the hollow portion of the first tube, and two opposing nobs attached to the bottom of the antenna protrude through the opposing slots. A second hollow tube fits over the first hollow tube. The inner walls of the second hollow tube have two opposing screw paths winding up its entire length. The nobs extend into the screw paths. The second tube is secured to the housing of the radio. A rotation in the wheel causes the first tube, and therefore the antenna, to rotate within the second tube. As the first hollow tube rotates, the two nobs in the screw paths force the antenna up or down, depending on the direction of the rotation.

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Chan, Hiang. (1992). Auto-extending antenna (U.S. Patent No. 5166695). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5166695

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