Joseph E Bert

US Patent:

44608950, Jul 17, 1984

Filed:

Jun 10, 1982

Appl. No.:

6/387575

Inventors:

Joseph E. Bert - Fremont CA
Robert W. Cotterman - Sunnyvale CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01Q 108
H01Q 132

US Classification:

343713

Abstract:

An integrated erectable antenna system comprises a mast pivotally mounted for rotation between a horizontal stowed position and a vertical operative position, and a log-periodic antenna assembly longitudinally slidably and pivotally mounted on the mast for movement between stowed and operative positions. The pivoted end of the mast has an extendible arm connected by cable to a hand operated winch. The antenna assembly comprises an elongated boom having many articulated transverse dipoles connected thereto over its length and foldable for stowing without disconnecting the dipole parts. The boom is hinged to the mast about one axis transverse to the latter for pivoting from a stowed position parallel to the mast to an operative position perpendicular to the mast and about another axis parallel to the boom for orienting the dipoles in either horizontal or vertical planes when the mast is in the vertical position. The entire system may be mounted on a standard size military passenger vehicle ("Jeep"), is collapsible into a space approximating the length and width of the vehicle, and is erectable to the fully operative position by one operator in less than five (5) minutes and by two operators in less than three (3) minutes. The invention also contemplates the method of erecting this antenna system consisting of the steps extending a lever arm from the pivoted end of the mast, sliding the antenna assembly from mid-mast to the other mast end, extending the folded dipoles to full length, and pivoting the antenna assembly into the operative position perpendicular to the mast while pivoting the mast from horizontal to vertical positions by winding on a winch reel a cable attached to the lever arm.

US Patent:

44713606, Sep 11, 1984

Filed:

Jun 10, 1982

Appl. No.:

6/387576

Inventors:

Robert W. Cotterman - Sunnyvale CA
Joseph E. Bert - Fremont CA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

H01Q 108

US Classification:

343805

Abstract:

An articulated element for an antenna such as a log-periodic dipole antenna having an elongated boom comprises an inner tubular section secured to the boom and an outer tubular section movable relative to the inner section between an extended or operative position colinear with the inner section to a folded or inoperative position transversely of the inner section. The element sections are interconnected by spring means which is always in tension and exerts a compressive force between the two sections for good electrical conductivity when in the operative position while permitting the outer section readily to be pivoted to the stowed position. A T-shaped sleeve secured to the inner section has slotted longitudinal and transverse legs which releasably clamp and provide strong mechanical support of the outer section in both positions.