Patent ID: 7404719

Claim:
An electrical connecting apparatus comprising: a plurality of contact blocks; a first and a second plate-like members overlapping each other to form a space for accommodating said contact block; and an attachment for attaching said contact block to said first or second plate-like member; said contact including a pair of contact pieces spaced from each other, and an electrically insulating combining block for combining said contact pieces, wherein each contact piece is provided with: a horizontal U-shaped or a horizontal V-shaped intermediate region having a folded end portion which is folded back and a pair of arm portions extending at a vertical interval from said folded end portion; a first tip region extending downward from the tip portion of one of said arm portions; and a second tip region extending upward from the tip portion of the other arm portion; wherein said folded end portions of both contact pieces are buried in said combining block, and the remaining parts of both contact pieces are proiected from said combining block, wherein said first plate-like member is provided with a plurality of first long holes which receive both first tip regions of said contact are disposed at intervals in a direction intersecting the longitudinal direction of said arm portion and extend in the longitudinal direction of said arm portion; and wherein said second plate-like member is provided with an opening for receiving a device under test; and a plurality of second long holes in which said second tip region of said contact is received and which are disposed at intervals in a direction intersecting the longitudinal direction of said arm portion and extend in the longitudinal direction of said arm portion.