Screw-socket fixture

Details Screw-socket fixture Screw-socket fixture

1976-02-09

1977-05-10

Britts, Ramon S.

F16B 1306

Patent

active

040221016

ABSTRACT:
A fixture for anchoring a machine screw in a hole in brickwork, concrete or stone comprises a socket which can be inserted into the hole, the diameter of which is not more than 1.1 times larger than the diameter of the screw. The thickness of the socket is between 3 and 7 % of the diameter of the screw and the material of the socket is selected from those being highly ductile when stressed beyond its yield point. The material of the socket will then after undergoing plastic deformation when the screw is tightened, fill at least one-half of the volume between the screw thread and the walls of the hole. The material of the sockets may consist of a metal or plastic material of deepdrawing quality, such as steel, brass, a tombac alloy or Delrin (polyoxymethylene).

REFERENCES:
patent: 2709389 (1955-05-01), van der Kleij
patent: 3477337 (1969-11-01), Racki
patent: 3854373 (1974-12-01), Romey

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