Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1981-04-07
1984-10-16
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137115, 239126, 417 26, 417 44, G05D 1620
Patent
active
044768893
ABSTRACT:
A control valve and switch assembly for automatic control of the pressure in a high pressure fluid system, such as in car washing apparatus, and comprising a housing having a fluid chamber therein providing communication between a pressure fluid source, such as a pump, and a fluid discharge valve, such as a spray nozzle, a fluid outlet passage provided in the housing in communication with the pressure chamber; a primary pressure switch secured to the housing and open to the pressure within the pressure chamber for selective opening and closing; the primary pressure switch being operably connected between a power supply and a motor starter for selective activation of the motor starter; an unloader valve in communication with the outlet passage and responsive to the pressure therein for selective opening to bleed excessive pressure from the pressure chamber to a fluid return line, and a secondary pressure switch secured to the housing and open to the return pressure; the secondary pressure switch being operably connected between the motor starter and a pump motor for activation of the pump in accordance with the pressure command conditions of the system and maintaining the system in an unloaded condition during inoperative periods.
REFERENCES:
patent: 3195556 (1965-07-01), Norstrud
patent: 3246845 (1966-04-01), Techler
patent: 3694105 (1972-09-01), Martin
LandOfFree
Control valve and switch assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control valve and switch assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control valve and switch assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1942289