Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Reexamination Certificate
2008-06-23
2011-10-11
Lee, Kevin (Department: 3753)
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
C137S505000, C137S505250, C251S248000, C251S250000
Reexamination Certificate
active
08033293
ABSTRACT:
A fluid regulator includes a valve block having an inlet arranged for connection to a gas supply and an outlet arranged for connection to an item of gas equipment and defining a flow path. The valve block may include one or more of a pressure regulator, a metering valve, and an on-off switch disposed in the flow path. A rotatable pinion operatively is coupled to the metering valve, and a hand control is coupled to the valve block and rotatable about an axis and includes a toothed rack movable with the hand control. A spring biases the toothed rack toward pinion to provide improved precision and/or less play between internal components. The fluid regulator they also include a balanced gear assembly for rotating a control rod of the valve, and further may be adapted to provide various visual indicators of the on-off the state of the device.
REFERENCES:
patent: 3856042 (1974-12-01), Fletcher et al.
patent: 3998227 (1976-12-01), Holbrook et al.
patent: 5760301 (1998-06-01), Shuman, Jr.
patent: 6116242 (2000-09-01), Frye et al.
patent: 6158457 (2000-12-01), Byrd et al.
patent: 2004/0221919 (2004-11-01), MacNeal et al.
patent: WO-2008-009941 (2008-01-01), None
International Search Report for PCT/US2009/044796, mailed Jan. 6, 2010.
Written Opinion of the International Searching Authority for PCT/US2009/044796, mailed Jan. 6, 2010.
Baseler Christian
Bergemann Anja
Checiches Dragos
Cojocaru Theodor
Henck Thorsten
Lee Kevin
Marshall & Gerstein & Borun LLP
Tescom Corporation
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