Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1986-12-19
1987-12-08
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29428, 29DIG48, 228112, 464183, B21K 2300, B21K 106, B21K 300, F16C 300
Patent
active
047110082
ABSTRACT:
A method of producing propeller shafts for jet-propelled small-sized boats comprises the steps of preparing a main shaft in the form of a hollow round bar, which is a finished part and a pair of auxiliary shafts shorter in length than the main shaft, in the form of solid round bars, which are roughly shaped parts, connecting and integrating the pair of auxiliary shafts with the opposite cut ends of the main shaft by the friction welding process utilizing heat of friction produced by relative pressurized rubbing movement between the parts, and, with the main shaft, which is a finished part, used as a standard, machining the surfaces of the auxiliary shafts, which are roughly shaped parts, to form mount surfaces for fitting thereon such parts as oils seals, bearings, and a propeller.
REFERENCES:
patent: 1967487 (1934-07-01), Waisner
patent: 3234646 (1966-02-01), Hollander et al.
patent: 4127080 (1978-11-01), Lakiza et al.
patent: 4518370 (1985-05-01), Orain
patent: 4527978 (1985-07-01), Zackrisson
patent: 4659005 (1987-04-01), Spindler
Goldberg Howard N.
Wallace Ronald S.
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