Pneumatic controlling means for, and in combination with, a powe

Details Pneumatic controlling means for, and in combination with, a powe Pneumatic controlling means for, and in combination with, a powe

1980-09-02

1983-05-24

Look, Edward K.

Pumps

Condition responsive control of drive transmission or pump...

Disconnectable drive element

74867, 192 329, F04B 4908

Patent

active

043848273

ABSTRACT:
An embodiment of the invention comprises a pneumatically operated regulating valve having porting therein for venting therethrough the pilot-signal, pressured fluid which is normally conducted to the front clutch internal control valve of a power transmission. The regulating valve is in communication with a source of pneumatic pressures. When the pneumatic pressure of the source is elevated, it causes the regulating valve to vent the pilot-signal, pressured fluid. Resultantly, the transmission is prevented from going into its lock-up mode and, instead, remains in its converter mode. The method sets forth the steps of modifying a standard transmission, without altering the latter's as-built configuration and arrangement, to incorporate the novel controlling means.

REFERENCES:
patent: 2824632 (1958-02-01), Lucia et al.
patent: 2981237 (1961-04-01), Gratzmuller
patent: 3100508 (1963-08-01), Mercier
patent: 3131722 (1964-05-01), Abbott et al.
patent: 3810531 (1974-05-01), Edmonds
patent: 4094340 (1978-06-01), Bergeron
patent: 4254799 (1981-03-01), Blatt
Fundamentals of Fluid Power by Wolansky et al., Houghton Mifflin Company, 1977, pp. 143, 144.

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