Hand operated, dual chambered, pneumatic pump

Details Hand operated, dual chambered, pneumatic pump Hand operated, dual chambered, pneumatic pump

1978-09-22

1982-06-15

Freeh, William L.

Pumps

Expansible chamber type

Plural pumping chambers

92 23, F04B 2306, F04B 3300

Patent

active

043348394

ABSTRACT:
A hand operated twin piston air pump, which pumps air under pressure in both directions, that includes a means to disengage pump handles when pumping pressures increase. Thus, twice the volume of air may be readily pumped while pressures are low, and half the piston area may be readily pumped when pressure increases. This speeds up the pumping cycle time and reduces the strokes required to inflate a given product, while not exceeding the designed pumping effort of the user.

REFERENCES:
patent: 167366 (1875-08-01), Tyler
patent: 636118 (1899-10-01), Dornatel
patent: 658325 (1900-09-01), Shiles et al.
patent: 717084 (1902-12-01), Denham
patent: 1170661 (1916-02-01), Myers
patent: 1248230 (1917-11-01), Williams
patent: 1275440 (1918-08-01), Johnson
patent: 1332293 (1920-03-01), Harger
patent: 1390559 (1921-09-01), Huntley
patent: 1392928 (1921-10-01), Foss
patent: 1527226 (1925-02-01), Rollins
patent: 2989227 (1961-06-01), Statham
patent: 3612731 (1971-10-01), Tanemoto

Affiliated with

Also associated with

Rating

Hand operated, dual chambered, pneumatic 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 Hand operated, dual chambered, pneumatic pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hand operated, dual chambered, pneumatic pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1917303