Robert E Montividas

US Patent:

8292990, Oct 23, 2012

Filed:

Sep 8, 2009

Appl. No.:

12/555493

Inventors:

Michael Schumacher - Forest Lake MN, US
Robert Montividas - Lino Lakes MN, US

Assignee:

TSI, Incorporated - Shoreview MN

International Classification:

B01D 19/00

US Classification:

95241, 95266, 96193, 96219, 73 6152

Abstract:

A High Performance Liquid Chromatography (HPLC) system including a pressure reducer assembly for reducing pressurized streams to ambient pressure. The pressure reducer assembly includes first and second flow restrictors, each coupled to a common chamber that acts as a surge suppressor that mitigates pressure spikes in the discharge lines. The flow restrictors may comprise tubes having a high length-to-diameter ratio. The pressure losses through the flow restrictors, in combination with transition losses as the flow stream enters and exits the chamber, are sufficient to reduce a discharge stream from a specified inlet pressure to substantially ambient pressure, thus eliminating the need for pressurized waste containers.

US Patent:

8312761, Nov 20, 2012

Filed:

Jun 24, 2009

Appl. No.:

12/491049

Inventors:

Robert Montividas - Lino Lakes MN, US
Richard Remiarz - Vadnais Heights MN, US
Brian Johnson - Stillwater MN, US
Max Carideo - St. Paul MN, US

Assignee:

TSI, Incorporated - Shoreview MN

International Classification:

G01M 3/02

US Classification:

73 40, 12820222

Abstract:

A test accessory for testing a variety respirators. The accessory is designed to compliment existing equipment to provide a robust assessment of respirator performance. The accessory may include a head form having an inflatable bladder capable of fitting a variety of sizes of respirator masks. In some embodiments, the inflatable bladder does not rely on adhesives to effect a seal, thereby eliminating manufacturing and quality assurance steps. The test accessory may also include a detachable instrumentation module that may be removed from the accessory, enabling calibration and maintenance at a remote facility without need for transporting the entire unit. The module may also house a memory device that may be upgraded with calibration data and firmware during the calibration process.

US Patent:

8621914, Jan 7, 2014

Filed:

Sep 14, 2012

Appl. No.:

13/618500

Inventors:

Robert Montividas - Lino Lakes MN, US
Richard Remiarz - Vadnais Heights MN, US
Brian Johnson - Stillwater MN, US
Max Carideo - St. Paul MN, US

Assignee:

TSI, Incorporated - Shoreview MN

International Classification:

G01M 3/02

US Classification:

73 40, 73 407, 12820222

Abstract:

A test accessory for testing a variety respirators. The accessory is designed to compliment existing equipment to provide a robust assessment of respirator performance. The accessory may include a head form having an inflatable bladder capable of fitting a variety of sizes of respirator masks. In some embodiments, the inflatable bladder does not rely on adhesives to effect a seal, thereby eliminating manufacturing and quality assurance steps. The test accessory may also include a detachable instrumentation module that may be removed from the accessory, enabling calibration and maintenance at a remote facility without need for transporting the entire unit. The module may also house a memory device that may be upgraded with calibration data and firmware during the calibration process.

US Patent:

54619106, Oct 31, 1995

Filed:

Jun 16, 1994

Appl. No.:

8/261285

Inventors:

Price R. Hodson - Glen Ellyn IL
Federico Chu - Glenview IL
Arnold Buchanan - Deerfield IL
Robert E. Montividas - Hanover Park IL

Assignee:

Alnor Instrument Company - Skokie IL

International Classification:

G01F 168

US Classification:

7317012

Abstract:

A fluid flow detection monitor (80), particularly useful in monitoring pressure differentials between a controlled environment and its surroundings, includes a heat source (1) situated between an upstream and downstream thermal sensor (2,3) within a channel (5). The electrical resistance of the downstream sensor varies as the downstream sensor is heated from fluid carried past the heat source. Circuitry is used to detect the electrical resistance differential between the thermal sensors, thereby detecting the presence of fluid flow.