Air driven liquid pump

Plant husbandry – Turpentine and rubber

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C047S050000, C417S130000, C417S134000, C417S136000

Reexamination Certificate

active

06988332

ABSTRACT:
An air driven liquid pump includes a reservoir, a liquid inlet aperture extending through the reservoir wall for fluid coupling to a liquid inlet duct, a liquid outlet aperture extending through the reservoir wall for fluid coupling to a liquid outlet duct. The liquid outlet aperture is in fluid communication with an outlet level inside the reservoir chamber located below the liquid inlet aperture and corresponding to a predetermined lower threshold value of the volume of the liquid within the reservoir chamber. The liquid pump also includes an air aperture extending through the reservoir wall for pneumatically coupling the reservoir chamber with the atmospheric air located exteriorly to the reservoir, a liquid inlet valve operationally coupled to the liquid inlet aperture and an air valve operatively coupled to the air aperture. A volume responsive first actuating mechanism is provided for selectively moving the liquid inlet valve to the liquid valve closed configuration and the air valve to the air valve open configuration upon the volume of liquid within the reservoir reaching a predetermined upper threshold value. A volume and pressure responsive second actuating mechanism is provided for selectively moving the liquid inlet valve to the liquid valve open configuration and the air valve to the air valve closed configuration upon the volume of liquid within the reservoir reaching the predetermined lower threshold value and the pressure differential between the air pressure inside and outside the reservoir reaching a predetermined differential threshold.

REFERENCES:
patent: 5074758 (1991-12-01), McIntyre
patent: 5078579 (1992-01-01), Ryan
patent: 5487647 (1996-01-01), Breslin
patent: 1098720 (1981-04-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Air driven liquid pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air driven liquid pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air driven liquid pump will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3584278

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.