Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1979-12-13
1981-08-18
Hoag, W. E.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29130, 29132, 156153, 156291, 156295, 264262, 264267, 2643281, 428 65, B21D 3918, B29C 2700, B29D 300, B29D 3100
Patent
active
042838215
ABSTRACT:
A fiber roll and a method for producing the fiber roll comprising a load carrying shaft portion and having thereon a cover portion made of fiber material. The cover portion is made by subjecting a great number of annular fiber material sheets fitted on the shaft portion to a very strong compression in the axial direction of the roll. The method includes the step of making at least one supply duct leading from an end portion of the roll to the interface of the shaft portion and the cover portion. After the axial compression of the fiber material, a hardening fluid is fed through the supply duct and pressure is applied thereto so as to force the fluid to penetrate between the cover portion and the shaft portion and to fill all possible cavities between the shaft portion and the cover portion.
REFERENCES:
patent: 1854509 (1932-04-01), Fish
patent: 2367796 (1945-01-01), Peterson et al.
patent: 2501629 (1950-03-01), Goulding
patent: 2804322 (1957-08-01), Herzog
patent: 2987802 (1961-06-01), Quinn
patent: 3265799 (1966-08-01), McWhirter
patent: 3291039 (1966-12-01), Christie
patent: 3555140 (1971-01-01), Argereu
patent: 4099312 (1978-07-01), Hill et al.
Hoag W. E.
Oy Wartsila Ab
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