Method for waterproofing junction of main and branch wires and cover therefor

• US 5,410,105 A
• Filed: 09/21/1993
• Issued: 04/25/1995
• Est. Priority Date: 09/21/1992
• Status: Expired due to Fees

• Current Assignee: Nitto Denko Corporation, Yazaki Corporation
• Original Assignee: Nitto Denko Corporation, Yazaki Corporation
• Inventors: Ohashi, Yukio, Hiroshima, Katsumi, Tahara, Masaharu, Kinoshita, Michitaka
• Primary Examiner(s): NIMMO, MORRIS
• Application Number:
  US08/124,398
• Time in Patent Office: 581 Days
• Field of Search: 174/92, 174/76, 174/88 R, 174/138 F, 156/49, 439/367, 439/457, 439/521, 439/731
• US Class Current: 174/92
• CPC Class Codes: H01R 4/70 Insulation of connections end caps H01R4/22
• CPC Class Codes: H02G 15/10 protected by boxes, e.g. by distribution, connection or junction boxes
• CPC Class Codes: H02G 15/18 protected by sleeves, e.g. for communication cable two-part covers H02G15/10 ; preforms having internal stresses B29C61/00

Abstract

A method for waterproofing a junction of branch wires with a main wire by enclosing the junction in a plastic cover containing a putty sealant and filling the inside of the cover with the sealant and a cover therefore are disclosed, the method comprising providing projections n and m on the inner side of cover l by which parallel wires b enfolded in the cover are vertically shifted or the parallel wires are not only vertically shifted but laterally spread by the projections to make enough space between adjacent wires b for letting the putty sealant in.

Claims

1. A method for waterproofing a junction of branch wires with a main wire comprising the steps of:

providing a cover having projections on the inside of the cover, for enclosing the junction;

filling the inside of the cover with a putty sealant; and

enfolding the cover around the junction and compressing the putty sealant to surround the junction;

wherein the projections are provided on the inner side of said cover in such a manner that parallel wires enfolded in the cover are vertically shifted by said projections to leave enough space between adjacent wires for letting said putty sealant in.

2. A method for waterproofing a junction of branch wires with a main wire according to claim 1, wherein said projections are provided in such a manner that parallel wires enfolded in the cover are vertically shifted and also laterally spread by said projections.

3. A method for waterproofing a junction of branch wires with a main wire according to claim 2, wherein said lateral spreading and vertical shifting of the parallel wires are effected by utilizing the inner surface of a hinge of the cover as well as said projections provided on the inner side of the cover.

4. A cover for enclosing a junction of substantially parallel wires while compressing a putty sealant in the cover to fill the inside of the cover with the sealant, comprising:

a housing including first and second portions which are foldable to receive the wires therebetween; and

projections protruding from an inner side of at least one of said first and second portions in such a manner that substantially parallel wires enfolded between said portions are vertically shifted by said projections to leave enough space between adjacent wires for letting said putty sealant in.

5. A cover according to claim 4, wherein said projections are provided in such a manner that parallel wires enfolded in the cover are vertically shifted and also laterally spread by said projections.

6. A cover according to claim 5, wherein said projections are provided so as to laterally spread parallel wires enfolded therein.

7. A cover according to claim 6, in which at least one of said projections has at least one side thereof tapered with the direction of the tapering of one projection being opposite to that of the adjacent projection.

8. A cover according to claim 5, further comprising a hinge between said first and second portions of said housing, wherein the inner surface of said hinge along with said projections laterally spread and vertically shift the parallel wires.

9. A cover according to claim 4, wherein said projections project inwardly from both of said first and second portions of the cover at positions shifted in the width direction of the cover so that opposing projections are offset from each other.

10. A cover according to claim 4, in which said projections are aligned in a plurality of lines perpendicular to the longitudinal direction of the cover at prescribed line intervals, with the positions of all the projections being different in the width direction of the cover.

11. A cover according to any one of claims 4 through 10, further comprising a diaphragm for blocking said putty sealant from overflowing to the end of the cover opposite to the direction toward the space formed among the parallel wires.

12. A cover according to claim 4, further comprising at least one rib extending inwardly from each of said first and second portions of said housing such that when said housing is folded, said ribs cause at least one of said wires to curve, thereby securing said wires.