US 3716820 A
A jack plug is integrally formed and comprises parts which are longitudinally hinged and releasably lock together to form a hollow body, for enclosing an electrical component, and a probe which has passageways for electrical members extending from the component; and the passageways each have an exterior aperture.
Description (OCR text may contain errors)
United States Patent 1 Deakin  ELECTRICAL JACK PLUGS ton, England Assignee: Sealectro Limited, Farlington, England Filed: May 5, 1971 Appl. No.: 140,457
 Foreign Application Priority Data Jan. 27, 1971 Great Britain; "330/71 US. Cl. ..339/l47 P, 339/176 P, 339/210 R 'Int. Cl. ..H0ll' 13/66 Field of Search ..339/19, 59, 147, 176 P, 183,
References Cited UNITED STATES PATENTS 2,659,874 11/1953 Veitch ..339/176 P Inventor: Stanley Thomas Deakin, Farling- Primary Examiner-David H. Brown Assistant Examiner-Lawrence J. Staab Attorney-James M. Heilman  ABSTRACT A jack plug is integrally formed and comprises parts which are longitudinally hinged and releasably lock together to form a hollow body, for enclosing an electrical component, and a probe which has passageways for electrical members extending from the component; and the passageways each have an exterior aperture.
1 Claim, 2 Drawing Figures PATENTED FEB] 31975 STANLEY T. DEAKIN ELECTRICAL JACK PLUGS This invention relates to electrical jack plugs. Jack plugs are, as is known, often used to provide electrical connection between two spaced apart, aligned electrical contacts, usually tubular or bussed contacts. Usually the contacts are in respective superposed arrays of contacts. The jack plug is often adapted to contain an electrical component such as a diode, which is connected between the two spaced contacts when the jack plug is inserted through the contacts.
Known jack plugs tend to be complex in construction and not to allow simple manufacture or simple exchange of the enclosed component once made. The present invention concerns a jack plug which is simply constructed and which enables easy exchange of an enclosed component.
According to the invention a jack plug is integrally formed and comprises parts which are longitudinally hinged and releasably lock together to form a hollow body, for enclosing an electrical component, and a probe which has passageways for electrical members extending from the component; and the passageways each have an exterior aperture.
Preferably'there are at least two passageways and the external aperture of one passageway is spaced apart along the probe from the aperture of another passageway.
A jack plug according to the invention can easily be moulded in one piece, preferably from polypropylene.
The apertures in the passageways are provided so that the electrically conductive members can protrude from the probe and resiliently engage respective spaced apart sockets.
Reference will be made panying drawings, in which:
FIG. 1 is a perspective view of one embodiment of open jack plug according to the invention; and
FIG. 2 illustrates the jack plug in use.
The drawings illustrate ajack plug 1 which comprises two halves 2 and 3 moulded integrally from an insulating flexible material such as, preferably, propylene. The parts are joined by a thin web 4 which acts as a hinge extending along the main bodies 5 and 6 of the halves 2 and 3. A half-spigot 7 extends from and in line with the main body 5 whereas a complementary halfspigot 8 extends from and in line with the main body 6.
The main bodies 5 and 6 form two halves of a hollow, generally cylindrical body when the halves 2 and 3 are closed together. The bodies 5 and 6 each have a semicircular cap, 9 and 10 respectively; a lug 11 projects from the flat side of the cap 9 and a recess 12 for receiving the lug 11 is provided in the flat side of the cap 10.
The half-spigots 7 and 8 have flat, abutting inner faces 13 and 14 respectively. A circular tapered recess 15 is formed in the face 13 whereas a complementary, undercut knob 16 is formed on the face 14. The halfhereinafter to the accomspigots terminate in nose portions 17 and 18, which have flat inner faces, separated from the faces 13 and 14 by an undercut step 19 and a complementary un dercut step 20 respectively. The lug 11 and recess 12, the recess 15 and knob 16 and the steps 19 and 20 all constitute members by which the halves 2 and 3 lock themselves together: the locking is releasable by hand owing to the inherent flexibility of the material,
0] ro lene ofthe lu 1. p lii the iace 13 are f rm ed channels 21 and 22 which are closed by the surface 14 to constitute passageways in and along the probeformed by the half-spigots 7 and 8. The channels, and hence the passageways, extend from the main body of the plug down most of the length of the probe. On one side of the half-spigot 7 the passageway 21 has an external aperture 23 at the point of a bend in the passageway. Further along the halfspigot and at the other side thereof the channel 22 has an external aperture 230 at the point of a bend in the channel. The channels 21 and 22 are not straight and at least the channel 22 has additional bends 24 and 25 in FIG. 2 shows the jack plug closed, containing an electrical component 26. The component may be an active or passive component, a miniature circuit or even a short-circuit lead. In the present example the component, which is located in the main, hollow, body of the plug 1 is connected to electrically conductive members 27 and 28 which are disposed each in one of the passageways in the probe constituted by the parts 7 and 8. Owing to the formation of the apertures at the points of bends in the passageways a bend 29 and 30 in each member is exposed and provides an electrical contact engaging the inside surface of one of two aligned, spaced cylindrical contacts 31 and 32. These latter contacts would normally be in superposed arrays of contacts.
1. An electrical jack plug which is integrally formed from insulating flexible material and comprises two parts which are longitudinally hinged and releasably lock together to form a hollow body for enclosing an electrical component and probe which has passageways for electrical members extending from the component, the passageways each having an external aperture located between the ends of the respective passageway wherein the probe is constituted by portions which have abutting surfaces and the said passages formed by channels in one surface and closed by the other surface, and the said parts have abutting surfaces provided with complementary locking members, and an electrical component comprising a body and electrically conductive members extending therefrom, said electrically conductive members extending from the body of the component down said passageways and protruding from the said apertures.