Pump having a decompression device
AssigneeSaint-Gobain Calmar Inc.
InventorsPedro Parés Montaner, Victor Ribera Turró
Life of this patent
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Abstract
A pump having a decompression device, appropriate for pumping a fluid from a container to an external environment, the pump including a jacket defining an inner space, a pumping chamber (17) housed in the inner space a piston for movement within the inner space between an extended position and a retracted position, and a decompression device which, when the piston is in the retracted position, places the pumping chamber in communication with a conduit communicating with the external environment.
Claims8
A pump, for pumping a fluid from a container to an external environment, said pump comprising a jacket defining an inner space, a pumping chamber housed in said inner space of said jacket a piston adapted for movement within said inner space of said jacket between an extended position and a retracted position, and a decompression device which, when said piston is in said retracted position, places said pumping chamber in communication with a conduit,
- wherein the piston includes a hollow stem defining a communication passage to said external environment,
- wherein the conduit is located within the piston and is in communication with said communication passage, and
- wherein the decompression device includes a lower lip disposed on said piston, which lip is located between said pumping chamber and said conduit.
A pump for pumping a fluid from a container to an external environment, said pump comprising a jacket defining an inner space, a pumping chamber housed in said inner space of said jacket, a piston adapted for movement within said inner space of said jacket between an extended position and a retracted position, wherein the pump is provided with a decompression device which, when said piston is in said retracted position, places said pumping chamber in communication with a conduit communicating with said external environment,
- wherein said piston is provided with an outer side surface, said jacket is provided with an inner side surface, between said outer side surface and said inner side surface there is an intermediate space defined by said outer side surface, said inner side surface, a lower lip and an upper lip, and where said intermediate space is in communication with said conduit, and
- wherein said piston is provided with a second upper lip.
Dependencies are inferred from the claim text.