Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1985-12-20
1987-06-30
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
295272, 156173, 1563042, 264137, 285156, 285293, 285423, B21D 5300, B65H 8100
Patent
active
046759654
ABSTRACT:
In the manufacture of a pipe part from fibre-reinforced thermosetting resin, such as a T-piece, preformed pipe parts made of fibre-reinforced thermosetting resin are placed on a mandrel defining the inside shape of the pipe part, the external surface of the mandrel being partially covered. The space between the mandrel and the inside of the pre-formed pipe parts is sealed and the parts of the pre-formed pipe parts adjacent to the uncovered part of the mandrel are chamfered on the outside. Synthetic resin impregnated fibres are then applied to the uncovered part of the mandrel and to at least the chamfered parts of the preformed pipe parts placed on the mandrel, until the pipe part has reached the desired final shape, after which it is cured and the mandrel is removed from the finished pipe part.
REFERENCES:
patent: 2751237 (1956-06-01), Conley
patent: 3765979 (1973-10-01), Thomas
patent: 4106797 (1978-08-01), Michael
patent: 4504086 (1985-03-01), Carrow
patent: 4601770 (1986-07-01), Ulrich et al.
Offringa Oege R.
Van Der Ploeg Frederik
Goldberg Howard N.
Wallace Ronald S.
Wavin B.V.
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