US 3702480 A
An antenna tip is disclosed for use in conjunction with a truck mounted antenna with the tip being configured to receive an antenna lead plug whereby a second radio may utilize the truck antenna. The tip removably receives the plug in frictional engagement to retain same yet permitting convenient disengagement. A modified form of the invention is in the form of an attachable tip structure mountable to existing antenna tips and having locking means to prevent loss during vehicle travel.
Description (OCR text may contain errors)
' United States Patent 4 Byars 451 Nov; 7, 1972  ELECTRICAL CONNECTOR FOR 3,364,487 1/1968' Maheux .l ..343/702 COUPLING AN EXTERNAL RECEIVER 2,911,643 11/1959 Gergely ..343/71l o A MOBILE WHIP ANTENNA 2,790,899 4/1957 Townsend ..343/702 1 3,230,533 1/1966 Brill ..'..343/7l3  Inventor: John C. Byars, 1696 Frame Road,-
. v Junction City, Oreg. 97440 Primary ExaminerE1i Lieberman  Filed: March 31, 1971 Attorney-James D. Givnan, Jr.
[21'] Appl. No.: 129,905  ABSTRACT I An antenna tip is disclosed for use in conjunction with  U.S. Cl. ..343/7l5, 343/906, 174/70 R, a truck mounted antenna with the tip being configured I I 174/84 R to receive an antenna lead plug whereby a second  Int. Cl. ..H0lq 1/32 radio may i i t e t u t The ip removably  Field of Search ..343/702, 720, 711, 713, 715, receives the P s in frictional engagement to retain 343/906, 70 R; 174/84 R me yet permitting convenient disengagement. A
a v modified form of the invention is in the form of an at-  References Cited tachable tip structure mountable to existing antenna tips and having locking means to prevent loss during UNITED STATES PATENTS vehicle travel- 3,518,681 6/ 1970 Kiepe ..343/702 1 Claim, 5 Drawing Figures EXTERNAL RECEIVER TO A MOBILE WHIP ANTENNA BACKGROUND OF THE INVENTION The present invention relates generally to radio antennas for vehicles for the reception of commercial broadcast frequencies and in particular to antennas mounted on trucks for carrying camper bodies.
With the advent of the wide use of metal bodied camper units the problem has arisen of providing an adequate antenna for a'radio used within the camper unit. The effectivenessof aradios built-in antenna within a metal camper body is reducedby reason of the campers metal wall structure. As the size of such camper units does not permit the mounting of telescopic antennas thereon they must rely on exterior temporarily makeshiftantennas which, of course, must be set upand taken down each time the camper is moved. Attempts to temporarily attach an antenna lead to the antenna of the truck has not provided the answer to this problem as the makeshift attachment is not adequate to conduct and adequate signal to the antenna lead of the camper radio. a
SUMMARY OF THE INVENTION The present invention concerns the modification of a conventional antenna tip structure while a second form of the invention provides a socket fitting, attachable to the tip of an existing antenna structure.
In the first form of the invention. said metal tip is permanently mounted to theupper end of an otherwise conventional antenna structure. Thetip 'is somewhat larger than a conventional antenna tip for the purpose of providing an internal socket for reception of a plug member'of a lead from the radio antenna input terminal. Y
The remaining form of the invention is embodied within an attachable tip for an existing truck mounted antenna. The attachable tip includes both a socket receptacle and locking means for securing same to the antenna tip. As shown the attachable tip may be of streamlined configuration.
BRIEF DESCRIPTION OF THE DRAWING In the accompanying drawing:
FIG. I is an elevational view of an antenna structure embodying one form of the present invention,
FIG. 2 is a side elevational view of a pickup truck and camper unit with a radio antenna lead in attachment with the upper end of the truck antenna,
FIG. 5 is a plan view of FIG. 4.
DESCRIPTION OF THE PREFERRED EMBODIMENTS With continuing reference to the accompanying drawings wherein applied reference numerals indicate parts similarly identified in the following specification, the reference numeral indicates a telescopic radio antenn of the eneral t widel used n various types 0 vehicles The ant r la IS sh wn sectioned with circuit with a shielded lead 14 terminating in circuit with a radio antenna input. The plug member 13 is of conventional shape for frictional engagement with the cylindrical walls defining the recess 12.
The modified form of the invention viewed in FIGS. 4 and 5 provides an attachable tip structure 16 for use in conjunction with the antennas existing tip structure indicated at 17 of a truck antenna 19. The structure 16 defines a cylindrically walled recess at 18 of a depth to friction-ally receive and retain an antenna lead plug member 20. a I
Extending upwardly from the bottom wall of the detachable tip structure 16 is a recess 21 of a size to receive the existing tip 17 of the truck antenna 19. Looking means in the form of a'set screw 22 is carried 7 in a threadedrecess 23 of the attachable tip structure.
As best viewed in FIG. 5 tip structure may be of streamlined configuration for obvious reasons.
While I have shown but two embodiments of the invention it will be apparent to those skilled in the art A to be secured under a Letters Patent is:
FIG. 3 is an enlarged detail view of the truck antenna 1. Attachable tip structure for attachment to a tele- I scopic radio antenna mounted exteriorly of a truck body, said attachable tip structure comprising a solid metal body having an inwardly extending cylindrical wall defining an elongate recess, said recess adapted to removably receive a plug member having a lead terminating in circuit with the antenna input of'a radio receiver located in a camper body carried by the truck, said tip structure additionally defining a recess adapted to receive the conventional tip structure of the antenna, and locking means carried by said attachable tip structure engageable with said conventional tip structure when the latter is disposed within the tip receiving recess of the attachable tip structure.
#I' I! k