FUSE CONTACTS

• US 3,871,738 A
• Filed: 11/29/1973
• Issued: 03/18/1975
• Est. Priority Date: 12/14/1972
• Status: Expired due to Term

• Current Assignee: Helen Dechelette
• Original Assignee: Helen Dechelette
• Inventors: Dechelette, Helen
• Primary Examiner(s): Frazier, Roy D.
• Assistant Examiner(s): Lewis, Terrell P.
• Application Number:
  US05/420,181
• Time in Patent Office: 474 Days
• Field of Search: 339/17R,17C,17D,5R,5L,5S,51,52R,52S,56,65,66,66T,93R,93L,95R
• US Class Current: 439/830
• CPC Class Codes: H01H 85/2025 for fuses with conical end contacts, e.g. fuses used on motor vehicles

Abstract

An electrical contact for a cartridge fuse, the contact being stamped and formed from resilient sheet metal and comprising two superimposed strips forming a composite leg having a mounting foot at one end, in which the mounting foot has a surface facing generally away from the contact portion for engagement with an upper surface of a mounting board, and an axis of a cone of the contact converging with the plane in which the surface of the mounting foot is disposed at a location spaced from a side of the contact at which the end portions are located.

Claims

1. A unitary electrical contact for a cartridge fuse having conical conductive ends, the contact being stamped and formed from resilient sheet metal and comprising two superposed strips having a contiguous portion forming a composite leg disposed in a first plane and having a mounting foot at one end, the strips being bent apart at the other end and being integrally joined at the other end by a U channel receptacle having two spaced walls joined by a bight, the channel extending generally along the axis of the composite leg with the walls located in second and third planes generally parallel to the first plane, each channel wall being bent at an end portion remote from the bight away from the other wall into the form of a part surface of a cone the apex of which is located between the bight and the end portions and the axis of which extends from the apex away from the bight and between the channel walls, the two part-conical surfaces forming a contact portion.

2. A contact according to claim 1, in which the mounting foot has a surface disposed in a fourth plane perpendicular to the first plane, the surface facing generally away from the contact portion for engagement with the upper surface of a mounting board, and the axis of the cone converges with the fourth plane in which the surface of the mounting foot is disposed at a location spaced from a side of the contact at which the end portions are located.

3. A contact according to claim 1, in which the end portions of the channel walls are bent away from each other at portions remote from the leg to form a flared mouth.

4. A contact according to claim 1, in which the strips are bent apart at the one end by a U channel generally aligned with the receptacle, the channel having a bight joining two spaced walls which have free ends projecting laterally beyond the composite leg, the free ends of the strips being formed as spaced tabs extending parallel to the composite leg.