Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1992-07-27
1993-11-30
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264 23, 411180, 425517, B29C 6508, B29C 6564
Patent
active
052662586
ABSTRACT:
Method of installing an insert in a plastics body so as to provide a screw thread therein, the insert being of metal and formed with the screw thread, and in which the hole in the plastic which receives the insert is sealed, by providing the insert with an `O` ring located in an external peripheral groove and projecting therefrom, the size and shape of the insert and hole being related and selected so that in axial displacement of the insert into the preformed hole accompanied by softening of the plastic caused by the fastener being preheated or by vibrations applied to the plastic via the fastener as it is inserted, the `O` ring only comes into contact with unsoftened plastic and only comes into contact with plastic towards the end of the axial installation movement. This ensures a good seal between the `O` ring and the plastic.
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Eastley Brian J.
PSM International PLC
Silbaugh Jan H.
LandOfFree
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