Title: Safety device in electrical connection devices

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Claims: I claim:

1. Safety device in electrical connection devices, especially lamp sockets, comprising a plurality of contact parts having portions provided to rest against an object arranged to be connected to the connection device, a plurality of contact elements, equal in number to said contact parts, one of said contact parts cooperating with one of said contact elements to form a connection, said contact elements being connected to the electrical leads of a cable, each of said contact parts comprising biasing means for urging said contact parts away from said contact elements, and at least one insulating member mounted between said contact parts and said contact elements for separating all of said contact parts from all of said contact elements when there is no object in said connection device, said insulating member comprising means for moving said insulating member so as to allow said contact parts and elements to contact each other in response to the insertion of an object into said connection device.

2. The safety device according to claim 1, wherein said insulating member comprises a thin plate positioned between said contact parts and said contact elements.

3. The safety device according to claim 2, wherein said plate comprises at least one opening, and said means for moving said insulating member comprises an abutment projecting from one edge of said thin plate so that as said object is inserted into said connection device, the abutment and, therefore, said thin plate are slidably moved to expose said contact elements.

4. The safety device according to claim 2, wherein said thin plate comprises at least one opening for allowing one of said contact parts to connect with a respective contact element, and said means for moving said insulating member comprises an abutment projecting from one side of said thin plate, said thin plate comprising a pivot so that as said object is inserted into said connection device, the abutment and, therefore, the thin plate is pivotally moved to expose said contact elements.

5. The safety device according to claim 1, wherein one of said contact parts comprises a pair of arms, one of said arms mounting a member for contacting a respective one of said contact elements, and the other of said arms comprises a pin for cooperation with said means for moving said insulating member.

6. The safety device according to claim 5, wherein said insulating member comprises a thin plate positioned between said contact parts and said contact elements, and said means for moving said insulating member is an opening in said thin plate for receiving said pin therethrough.

7. The safety device according to claim 6, wherein said thin plate comprises at least one opening for exposing at least one of said contact elements, and a pivot pin, so that upon insertion of said object in said connection device, the object pivots said thin plate via said pin and said means for moving.
Other info:

Inventors: Hagelberg, Anders Torvald Sverker (Molnlycke, SW)

Application Number: 501820
Filing Date: 1974-08-29
Publication_date: 1976-02-03
Assignee: Bengt Petersson New Products Investment AB (SW)
Primary Class(es): 439/138 439/137, 439/139, 439/188, 439/339
Other Classes:
US Patent Ref:

2161774	Jun, 1939	Cooke	339/180.
2181050	Nov, 1939	Evans	339/40.
2688669	Sep, 1954	Quill	339/180.
3363215	Jan, 1968	Smith	339/41.
3812446	May, 1974	Sinclair	339/41.

Other Refs:
Primary Examiner: Lake, Roy
Assistant Examiner: Bicks, Mark S.
Attorney: Toren, McGeady and Stanger