Arcless clamp connector

• US 4,215,908 A
• Filed: 12/15/1978
• Issued: 08/05/1980
• Est. Priority Date: 12/15/1978
• Status: Expired due to Term

• Current Assignee: Cathodic Protection Services Incorporated
• Original Assignee: Cathodic Protection Services Incorporated
• Inventors: Bash, Leroy A., Cherry, Raymond B
• Primary Examiner(s): McGlynn, Joseph H.
• Application Number:
  US05/969,763
• Time in Patent Office: 599 Days
• Field of Search: 339/95 R, 339/96, 339/264
• US Class Current: 439/435
• CPC Class Codes: H01R 11/26 End pieces terminating in a screw clamp, screw or nut
• CPC Class Codes: H01R 4/64 Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Abstract

The connector of this invention can make an arcless connection between an electric cable and a metallic object. The connector preferably is a C-clamp having a pair of opposed legs. One leg carries an adjustable clamp screw. The other leg carries a block of compressible, insulated, elastic material having a contact surface. At least one contact member has a portion thereof completely embedded in the block. The contact member has a sharply pointed tip adjacent to and facing the contact surface. By tightening the clamp screw against the metallic object, the clamping pressure will compress the block material until the pointed tip pierces the contact surface and establishes a forced electric connection between the contact member and the metallic object.

Claims

1. An arcless clamp connector comprising:

a block made of an elastic, compressible, insulating material and having a contact surface,

at least one electric contact member embedded in said block adjacent to and facing said contact surface,

a clamp having a body carrying said block, said body being C-shaped and having a pair of opposed legs, said block being mounted on one leg facing the other leg, and

clamping means mounted on said other leg for clamping said block to an electric conductor member, whereby the clamping pressure of said clamping means compresses said material until said contact member pierces said contact surface and establishes a forced electric connection between said conductor member and said electric contact member, and said compressed material sealing off said electric connection from the ambient medium.

2. The clamp connector of claim 1 wherein said clamping means is a clamp screw.

3. The clamp connector of claim 1 and means insulating said contact member from the body of said clamp, and a cable coupler means connected to said contact member for receiving an electric cable therein.

4. The C-clamp connector of claim 3 wherein said contact member is a threaded bolt, and said cable coupler means includes:

an internally threaded sleeve for receiving said threaded bolt at one end thereof.

5. The C-clamp of claim 4 wherein said cable coupler means further includes:

a plug having a socket for receiving said cable and a threaded pin, and

said sleeve threadedly receiving said pin at the other end thereof.

6. A C-clamp having a pair of clamp legs for making an arcless connection between at least one electric cable and a metallic object, one clamp leg carrying a block of compressible, insulated material, a contact member having one end provided with a sharply pointed tip completely embedded in said block, and the other clamp leg carrying an adjustable clamp screw.