Metal working – Means to assemble or disassemble – Heat exchanger
Patent
1986-06-12
1987-11-24
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Heat exchanger
29 33T, 29235, 29252, 29282, 294261, 294265, 29DIG42, 165 76, 376463, B23P 1526
Patent
active
047079126
ABSTRACT:
A crash protection apparatus for a pulling device having a hollow piston cylinder and a pulling claw for pulling a tube out of a tube sheet of a heat exchanger chamber in which the pulling device is disposed, the crash protection apparatus includes another cylinder without a piston rod having an axis substantially parallel to the axis of the hollow-piston cylinder and being fixed relative to the tube sheet in the chamber, a piston of the other cylinder, a bracket extending from the piston substantially at a right angle to the axis of the other cylinder for supporting the pulling device with a supporting force provided by the other cylinder, and a device for controlling the supporting force for compensating only the weight of the pulling device in each position of the pulling device.
REFERENCES:
patent: 1964023 (1934-06-01), Armstrong
patent: 3785026 (1974-01-01), Ohmstede
patent: 3836015 (1974-09-01), Travis
patent: 3958698 (1976-05-01), van der Woerd
patent: 3979816 (1976-09-01), Green
patent: 4168782 (1979-09-01), Sturges, Jr.
patent: 4205939 (1980-06-01), Reyes
patent: 4227854 (1980-10-01), Coffey
Brown Boveri Reaktor GmbH
Goldberg Howard N.
Greenberg Laurence A.
Lerner Herbert L.
Wallace Ronald S.
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