Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1979-08-02
1982-06-29
Larson, Lowell A.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
165184, 165157, 291573AH, B23P 1526
Patent
active
043366422
ABSTRACT:
A method of enlarging the heat exchange surface of a tubular element used for guiding a medium in a heat exchanger, and the product obtained thereby.
REFERENCES:
patent: 1699542 (1929-01-01), Murray
patent: 1721808 (1929-07-01), Kettering
patent: 1942211 (1934-01-01), Hartwig
patent: 1960305 (1934-05-01), Emmons et al.
patent: 3789786 (1974-02-01), Wiedenmann et al.
patent: 3959867 (1976-06-01), Frost
patent: 3968554 (1976-07-01), Roffelsen
B.V. Machinefabriek Breda v/h Backer & Rueb
Keegan William P.
Larson Lowell A.
Rising V. K.
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