US 2022/0412338 A1Published application

Personal air sampling pump assembly

AssigneeIDEAL Industries, Inc.

InventorsBrandon Trainer, Steve Tearle, Aamir Qureshi

Life of this patent

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Abstract

An air sampling pump includes a reciprocating piston for operating a diaphragm assembly. The diaphragm includes a valve head including a fluid inlet and a fluid outlet and a fluid chamber defining a fluid path between the inlet and outlet. A diaphragm sealing engages the valve head and encloses the fluid chamber. The diaphragm includes a piston diaphragm membrane portion coupled to the piston for reciprocating with the piston and reciprocation of the piston causes a change in air pressure within the fluid chamber to cause air to move from the fluid inlet toward the fluid outlet. The diaphragm includes a damper membrane portion, which cooperate to reduce an amplitude of pulsation in the airflow at the fluid inlet and fluid outlet.

Claims20

Dependent claims

An apparatus comprising:

a housing;
a fluid inlet formed in the housing;
a fluid outlet formed in the housing;
a piston within the housing;
a first diaphragm operably coupled to a first end of the piston, the first diaphragm at least partially enclosing a first fluid chamber;
and
a second diaphragm operably coupled to a second end of the piston, the second diaphragm at least partially enclosing a second fluid chamber, wherein:
while the piston moves in a first direction:
the first diaphragm is configured to cause air to move into the first fluid chamber from outside the housing via the fluid inlet, and
the second diaphragm is configured to cause air to move out of the second fluid chamber toward the outside of the housing via the fluid outlet;
and
while the piston moves in a second direction:
the first diaphragm is configured to cause air to move out of the first fluid chamber toward the outside of the housing via the fluid outlet, and
the second diaphragm is configured to cause air move into the second fluid chamber from the outside of the housing via the fluid inlet.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/901,455Filed 1 Sep 2022
Priority: 27 Apr 2015
Published: 29 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F04B 45/047
Having plate-like flexible members, e.g. diaphragms: pumps having electric drive
F04B 39/0027
Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of…:…
F04B 39/005
Pulsation and noise damping means: with direct action on the fluid flow using absorptive materials
F04B 39/0055
Pulsation and noise damping means: with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes

Family

Application62/153,167Us provisional application · filed 27 Apr 2015
Application15/136,377Continuation · filed 22 Apr 2016
Application17/009,520Continuation · filed 1 Sep 2020
Application17/901,455Continuation
US 10,774,825 B2Related patent
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US 12,492,694 B2Related patent
US 2017/0022985 A1Published application
US 2020/0392955 A1Published application
US 2022/0412338 A1This patent

From the US filing history. Foreign family members aren’t listed.