Jaroslaw W Pisera

20060185743, Aug 24, 2006

Feb 22, 2005

11/063075

Paul Lucas - Melrose MA, US
Jaroslaw Pisera - Bedford MA, US

F16K 3/04

137599180

A valve assembly including a housing having a flow path extending to an outlet and a valve seat in the flow path and around the outlet, a slide plate located in the housing and movable transversely to a longitudinal axis of the flow path between a closed position, in which the slide plate is in contact with the valve seat and blocks flow through the flow path, and an opened position, in which the slide plate allows flow through the flow path, and wherein at least one of the slide plate and the valve seat includes at least one passageway for providing a predetermined amount of conductance between the slide plate and the valve seat when the slide plate is in the closed position.

20060249702, Nov 9, 2006

May 9, 2005

11/124704

Matthew Besen - Andover MA, US
Donald Smith - Belmont MA, US
Ron Collins - Londonderry NH, US
Jaroslaw Pisera - Bedford MA, US

F16K 5/10

251208000

An improved fluid flow control valve that allows for conduction of a substantial portion of thermal energy therethrough includes a first portion, a second portion, and a moveable element The first portion includes an aperture for fluid communication with a fluid source. The second portion includes a second aperture, which is at least partially aligned with the first aperture. The moveable element, which is disposed between and spaced from the first and second portions to allow conduction of at least a substantial portion of thermal energy from the first portion to the second portion. The moveable element includes an aperture that at least partially aligns with the first and second apertures when the moveable element is in an open position and that misaligns with at least one of the first and second apertures when the moveable element is in a closed position.

20110101259, May 5, 2011

Nov 3, 2009

12/611760

Jaroslaw W. Pisera - Bedford MA, US
David B. Chamberlain - Hooksett NH, US
Robert Krmpotich - Salem NH, US
Paul D. Lucas - Melrose MA, US

F16K 1/22
B08B 3/00

251305, 251304, 137 1504

A butterfly valve comprises: a body including a valve opening; and a flapper rotatably mounted about a rotation axis so as to be movable relative to the valve opening. The flapper is rotatable at least 180 about the rotation axis so that the flapper is movable to at least one fully opened position, at least one fully closed position 90 apart from the fully opened position, and a third position, either fully opened or fully closed, 180 from the other like position. In one embodiment the flapper is rotatable at least 360 about the rotation axis so that the flapper is movable to each of two opened positions 180 apart, and two closed positions 180 apart from each other and 90 and 270 apart from each of the fully opened positions. The valve can be easily calibrated and controlled, and cleaned to extend the useful service life between cleanings.

20120076935, Mar 29, 2012

Feb 25, 2011

13/035534

Junhua Ding - Tewksbury MA, US
Scott Benedict - Nashua NH, US
Jaroslaw Pisera - Bedford MA, US

C23C 16/455
B05C 11/06

4272481, 118704

A pulse gas delivery system for delivering a sequence of pulses of prescribed amounts of gases to a process tool, comprises: (a) a plurality of channels, each including (i) a gas delivery chamber; (ii) an inlet valve connected so as to control gas flowing into the corresponding gas delivery chamber; and (iii) an outlet valve connected so as to control the amount of gas flowing out of the corresponding gas delivery chamber; and (b) a dedicated multiple channel controller configured so as to control the inlet and outlet valves of each of the channels so that pulses of gases in prescribed amounts can be provided to the process tool in a predetermined sequence in accordance with a pulse gas delivery process.

20140209181, Jul 31, 2014

Jan 29, 2013

13/753019

- Andover MA, US
Gordon Hill - Arlington MA, US
Jaroslaw Wojciech Pisera - Boulder CO, US

F16K 49/00

137 1504, 137334

A valve assembly comprises: a valve body including a passageway through which a first gas can be transmitted through the valve assembly; a valve flow control element movable relative to the valve body between an opened position wherein flow through the passageway is at a maximum flow, and a closed position wherein flow through the passageway is at a minimum flow, the valve flow control element is shaped so that a control gap is provided between the valve body and valve flow control element through which the first gas can flow, and the dimensions of the control gap vary depending on the position of the valve flow control element relative to the valve body; and a gas injector arrangement for selectively injecting a second gas into the control gap when the valve assembly is used to control the flow of the first gas through the passageway. The injection of the second gas when the valve flow control element is at or near its closed position helps minimize condensate being deposited on the valve flow control element, as well as reduce the closed conductance of the valve.