Robert B Jensen

US Patent:

6415642, Jul 9, 2002

Filed:

Dec 14, 1999

Appl. No.:

09/460626

Inventors:

Robert O. Crapo - Salt Lake City UT
Robert L. Jensen - Salt Lake City UT

Assignee:

Hans Rudolph, Inc. - Kansas City MO

International Classification:

G01N 33497

US Classification:

73 105, 73 106

Abstract:

A calibration apparatus for checking the accuracy of DLco testing machines includes a pair of syringes mounted side by side in a frame and joined by a valve controlled gas passageway to a coupling adapted to mate with the testing machine. The first syringe receives gas from the testing machine and the second syringe has a chamber from which gas of a known concentration is returned to the testing machine. The chamber of the second syringe is flow connected by a valve to a source of test gas. The gas passageway is constructed in such a manner to reduce dead air space and to allow purging with test gas to eliminate contamination with ambient air or gas of previous tests.

US Patent:

6501692, Dec 31, 2002

Filed:

Sep 17, 2001

Appl. No.:

09/953767

Inventors:

John L. Melanson - Austin TX
Dimitris Pantelakis - Austin TX
Robert A. Jensen - Austin TX
Vikram Shenoy - Austin TX

Assignee:

Cirrus Logic, Inc. - Austin TX

International Classification:

G11C 700

US Classification:

365201, 365154

Abstract:

A stress test circuit and method for static random access memory (âSRAMâ) cells of an SRAM device are disclosed. The stress test component has a resistance element and a switch component to electrically couple the resistance element between a bit line and complementary bit line of an SRAM cell storing a digital value. Stress test component is activated to electrically couple the resistance element to the bit line and complementary bit line. An electrical path is created causing a voltage on an SRAM circuit path maintaining the digital value to be pulled in one direction by a stress current. The electrical path causes another voltage on another SRAM circuit path maintaining a complementary digital value to be pulled in an opposite direction by the stress current. The SRAM cell is then read to determine whether the digital value has changed state.

US Patent:

6507222, Jan 14, 2003

Filed:

Jul 23, 2001

Appl. No.:

09/911334

Inventors:

Robert A. Jensen - Austin TX
Dimitris C. Pantelakis - Austin TX

Assignee:

Cirrus Logic, Inc. - Austin TX

International Classification:

G01R 1900

US Classification:

327 51, 327 54

Abstract:

An apparatus and method for processing a data input signal with a single ended sense amplifier. The single ended sense amplifier includes a transmission gate circuit and a control circuit coupled between a feedback inverter circuit and an output signal that is fed back to the feedback inverter circuit. An inverter circuit is coupled between an enable signal and the transmission gate and control circuits. During pre-charge operation, the input to the feedback inverter circuit is driven to a first state. The feedback inverter correspondingly drives the input signal to a sensing inverter to a state that is complementary to the input to the feedback inverter circuit, thereby assisting the pre-charge mode and substantially reducing time delay due to the input signal contending with the feedback inverter circuit. One advantage of the present invention is that sense amplifiers can be sized for faster sensing than would other-wise be feasible due to the excessive contention during the pre-charge mode.

US Patent:

7032083, Apr 18, 2006

Filed:

Aug 13, 2002

Appl. No.:

10/217364

Inventors:

Robert Arthur Jensen - Austin TX, US
Mail Khoi - Austin TX, US
Vikram Shenoy - Austin TX, US
Dimitris Pantelakis - Austin TX, US

Assignee:

Cirrus Logic, Inc. - Austin TX

International Classification:

G06F 12/00

US Classification:

711154, 345567

Abstract:

Memory address decoder circuitry including a decoder for activating a corresponding memory access control conductor in response to registered address bits. An address register stores received address bits for presentation to the inputs of the decoder and includes reset circuitry for resetting the outputs of the address register to an inactive state during an inactive time period to reduce transition glitches in the decoder during latching in a subsequent active period.

US Patent:

20140075665, Mar 20, 2014

Filed:

Sep 3, 2013

Appl. No.:

14/016589

Inventors:

Kalpesh Nanji - Frisco TX, US
Robert Buete - Southlake TX, US
Robert Jensen - East Brunswick NJ, US
Alison J. Lyons - Morristown NJ, US

Assignee:

Safety Tubs Company, L.L.C. - Piscataway NJ

International Classification:

A47K 3/00

US Classification:

4556

Abstract:

Described herein is a walk-in tub having an outward opening door that includes a walk-in bathtub having an outward opening door. The tub includes a body, which defines a cavity and at least one access wall which itself contains an entry surface that extends laterally away from the cavity. The entry surface defines a doorway or portal that is in communication with the cavity to facilitate lateral ingress to and egress from the cavity by a bather. Also contemplated with the scope of the invention are door sealing assemblies that serve to seal the door against the access wall.

US Patent:

47663634, Aug 23, 1988

Filed:

May 29, 1987

Appl. No.:

7/055294

Inventors:

Robert E. Rutter - Tempe AZ
Robert M. Jensen - Albuquerque NM

Assignee:

Devore Aviation Corporation - Albuquerque NM

International Classification:

G05F 140

US Classification:

323243

Abstract:

Power from an AC source is applied to a load under control of a power switching triac in response to signals from a feedback loop isolated from line voltage transients by means of a pair of opto-coupling devices respectively connecting the feedback loop to a load voltage sensor and the control electrode of the triac.