Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1999-08-16
2000-12-26
Thorpe, Timothy S.
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
417572, 417234, 222 5, F04B 3910
Patent
active
061649384
ABSTRACT:
A hand pump includes a cylinder, a head mounted to a first end of the cylinder and including a compartment communicated with a bore of the cylinder, and a piston rod including a first end reciprocatingly received in the bore of the cylinder and a second end beyond a second end of the cylinder. The piston rod includes a chamber for receiving a gas container therein. An automatic inflation device is attached to the second end of the piston rod and includes a valve engaging arrangement to be optionally engaged with a valve of an object to be inflated. A pin is provided to open the gas container in the chamber of the piston rod such that gas from the gas container is guided to an outlet of the automatic inflation device. A manual inflation device is mounted in the head for optionally engaging with the valve of the object to be inflated. The automatic inflation device is capable of acting as a handle to proceed with manual inflation to the valve of the object to be inflated via the manual inflation device.
REFERENCES:
patent: 4569275 (1986-02-01), Brunet
patent: 5316055 (1994-05-01), Brimmer
patent: 5911520 (1999-06-01), Kenney
Kamrath Alan
Solak Timothy P.
Thorpe Timothy S.
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