John P Varone, Age 48174 W Brookline St APT 2, Boston, MA 02118

2011001, Jan 27, 2011

Jan 22, 2009

12/864142

Randall J. McDonald - Franklin MA, US
Oliver J. Dumas - East Sandwich MA, US
Robert P. Sullivan - Wilmington MA, US
John J. Varone - Seekonk MA, US
Joseph Chopy, JR. - Cumberland RI, US
Daniel R. Jankins - Raynham MA, US

B01D 8/00

62 555

A vacuum network control system includes a plurality of nodes configured for control over operational processes of the system. The plural nodes are configured, in a network ring or other topology, as a selectable master node for controlling the operational processes. Control can be distributed among, and passed between, each of the nodes. Each node on the network monitors adjacent network connectors to detect a fault in the network. In response to a detected fault, a disconnect is mapped to the fault, and the network topology is reconfigured for continued communication among the nodes and with external devices.

6272400, Aug 7, 2001

Jul 13, 1998

9/114549

Daniel Jankins - Randolph MA
John Varone - Seekonk MA

Helix Technology Corporation - Mansfield MA

G05D 1100

700282

A vacuum network controller includes a host interface for interfacing with a host controller, a component interface for interfacing with vacuum system components, a computer-readable medium storing software code, and a processor in communication with each of the preceding elements. The software code generates commands to control the vacuum system components, translates those commands into multiple communication protocols, and communicates the translated commands to the component interface. In a method embedded in a set of computer-translatable instructions, an instruction is received from a host controller. That instruction is processed to generate a command for controlling a vacuum system component. A software driver is selected from a library of drivers for communication protocols, and the selected software driver is used to translate the command into the respective protocol. Finally, the translated command is communicated to a component interface to control the operation of the vacuum system component.

2019006, Feb 28, 2019

Oct 29, 2018

16/173623

- Chelmsford MA, US
Maureen C. Buonpane - Mansfield MA, US
Ronald N. Morris - Bedford MA, US
Allen J. Bartlett - New London NH, US
Leonard A. Loranger - Medfield MA, US
Joseph Chopy, JR. - Cumberland RI, US
Robert P. Sullivan - Wilmington MA, US
John J. Varone - Seekonk MA, US
Paul E. Amundsen - Ipswich MA, US

F25B 49/02
A01N 63/02
G01N 33/50

A refrigerant management system controls the supply of refrigerant from two or more variable speed and fixed speed compressors to a plurality of cryogenic refrigerators. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators. The amount of refrigerant to supply is based on an aggregate demand for refrigerant from the plurality of cryogenic refrigerators and a refrigerant correction metric. An appropriate supply of refrigerant is distributed to each cryogenic refrigerator by adjusting the speed of the variable speed compressors or, alternatively, selectively turning the compressors on or off. The speed of the variable speed compressors is adjusted by determining an amount of refrigerant to supply to the plurality of cryogenic refrigerators. If the aggregate demand for refrigerant exceeds the capacity of the compressors, then the speed of a refrigerator within the plurality of refrigerators is adjusted.