Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Multipart
Patent
1993-11-24
1996-03-12
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
Multipart
411429, 411377, 411903, F16B 3708, F16B 3714
Patent
active
054981115
ABSTRACT:
The present invention is a method of manufacturing a screw connector by an injection metal mold. The screw connector includes a connector main body and a nut embedded in the connector main body. An axis of the nut extends in a forward and backward direction of the connector main body. The screw connector further includes a first opening located on a front side of the nut to be inserted by a bolt of a mating connector and a first columnar space located on a rear side of the nut to receive a distal end portion of the bolt. The method includes the three steps. The first step is setting said metal mold in such a state that said nut is held by a front projection portion and a rear projection portion. This front projection portion projects rearwardly and having a small diameter portion and a portion having larger diameter than said small diameter portion. This rear projection portion projects forwardly to be in contact with a rear end face of said nut. The second step is injecting a melted resin in said metal mold. The third step is separating a resin molded product from said metal mold.
REFERENCES:
patent: 4059199 (1977-11-01), Quaney
patent: 4397437 (1983-08-01), Madej
patent: 4815920 (1989-03-01), Morooka
patent: 4883399 (1989-11-01), MacLean
patent: 5051636 (1991-09-01), Ishimoto et al.
patent: 5253962 (1993-10-01), Close, Jr.
Inaba Shigemitsu
Yamamoto Masayuki
Wilson Neill R.
Yazaki -Corporation
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