Michael Francis Levin

US Patent:

6380925, Apr 30, 2002

Filed:

Feb 4, 2000

Appl. No.:

09/498536

Inventors:

Kenneth M. Martin - Palo Alto CA
Michael D. Levin - Sunnyvale CA
Adam C. Braun - Sunnyvale CA

Assignee:

Immersion Corporation - San Jose CA

International Classification:

G06F 3033

US Classification:

345161

Abstract:

A mechanism for providing selective engagement of spring members to a user manipulatable object in a force feedback interface device. A moveable member included in a force feedback mechanism is moveable in a degree of freedom to transmit forces to the user manipulatable object, such as a joystick handle. A spring member can be selectively coupled and decoupled between a grounded member and the moveable member. The spring member provides a spring force on the moveable member that biases the joystick handle to a desired position, such as the center of the degree of freedom. A dynamic calibration procedure reduces inaccuracies when sensing the position of the user manipulandum by only reading new range limits when the actuator is not outputting a force in the direction of that limit. A capstan drive mechanism is preferably coupled between the actuator and linkage mechanism, where a capstan drum includes a curved end over which the cable is routed, the curved end including flanges to substantially prevent the cable from slipping of the sides of the end. The capstan drum includes a tensioning spring member coupled to one or both ends of the cable for tensioning the cable.

US Patent:

7930878, Apr 26, 2011

Filed:

Feb 27, 2007

Appl. No.:

11/679206

Inventors:

David Cook - San Ramon CA, US
Furqan Zafar Shaikh - Troy MI, US
Michael Levin - Ann Arbor MI, US
David Furedy - Pittsburgh PA, US
Evan Kent Dawson - Houston TX, US
Daniel Kabat - Oxford MI, US
Jeremy Keller - Windsor, CA

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F01N 3/00
F01N 3/10

US Classification:

60286, 60274, 60295, 60301, 60303

Abstract:

According to one aspect of the present invention, a liquid reductant tank for supplying liquid reductant to a selective catalytic reduction system is disclosed. The tank includes a tank cavity for holding a liquid reductant and being at least partially defined by one or more side walls; a liquid reductant supply line at least partially situated within the tank cavity and for communicating liquid reductant from the tank cavity to outside of the tank cavity; and a heating element situated at least partially within the liquid reductant supply line and for thawing frozen reductant situated within the supply line during cold start conditions to obtain liquid reductant for use in a selective catalytic reduction system.

US Patent:

7982711, Jul 19, 2011

Filed:

Dec 17, 2004

Appl. No.:

11/014218

Inventors:

George V. Anastas - San Carlos CA, US
Michael D. Levin - Los Altos CA, US
Danny Grant - Montreal, CA
Juan Manuel Cruz-Hernandez - Montreal, CA
Pedro Gregorio - Montreal, CA
Christophe Ramstein - San Francisco CA, US

Assignee:

Immersion Corporation - San Jose CA

International Classification:

G09G 5/00

US Classification:

345156, 345161, 31856817

Abstract:

An apparatus includes a characterization module configured to receive data associated with operational characteristics of a mechanical device, the operational characteristics being associated with a perceptual experience of the mechanical device. A conversion module is coupled to the characterization module. The conversion module is configured to automatically produce, substantially without user intervention, a parametric data set associated with the mechanical device based on the data. In another embodiment, a method includes receiving data associated with operational characteristics of a mechanical device. The operational characteristics are associated with a perceptual experience of the mechanical device. A parametric data set associated with the mechanical device is produced automatically, without user intervention. The parametric data set is associated with the mechanical device based on the data.

US Patent:

8534054, Sep 17, 2013

Filed:

Feb 1, 2011

Appl. No.:

13/018913

Inventors:

David Cook - San Ramon CA, US
Furqan Zafar Shaikh - Troy MI, US
Michael Levin - Ann Arbor MI, US
David Furedy - Pittsburgh PA, US
Evan Kent Dawson - Houston TX, US
Daniel Kabat - Oxford MI, US
Jeremy Keller - Windsor CA, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F01N 3/00
F01N 3/10
F27D 11/00
B67D 7/58

US Classification:

60295, 60303, 219438, 219439, 222377

Abstract:

According to one aspect of the present invention, a liquid reductant tank for supplying liquid reductant to a selective catalytic reduction system is disclosed. The tank includes a tank cavity for holding a liquid reductant and being at least partially defined by one or more side walls; a liquid reductant supply line at least partially situated within the tank cavity and for communicating liquid reductant from the tank cavity to outside of the tank cavity; and a heating element situated at least partially within the liquid reductant supply line and for thawing frozen reductant situated within the supply line during cold start conditions to obtain liquid reductant for use in a selective catalytic reduction system.

US Patent:

54028345, Apr 4, 1995

Filed:

Nov 25, 1992

Appl. No.:

7/981456

Inventors:

Michael D. Levin - Franklin Park NJ
William F. Richardson - Somerset NJ
Alan B. Todtenkopf - Bridgewater NJ

Assignee:

Merck & Co., Inc. - Rahway NJ

International Classification:

B65B 130
B65B 326

US Classification:

141 83

Abstract:

Solutions are prepared by accurately dispensing and weighing concentrated solutions of salts, acids and bases as well as water or organic solvent, and mixing to achieve homogeneity. The final solution may be stored or used directly from the system.

US Patent:

50513290, Sep 24, 1991

Filed:

Dec 19, 1989

Appl. No.:

7/452994

Inventors:

Edward B. Caruthers - West Chester PA
Michael L. Levin - Downingtown PA
Catharine E. Looney - Centerville DE
Steven P. Schmidt - Chester Springs PA
Dana S. Smith - Wilmington DE

Assignee:

DXImaging - Lionville PA

International Classification:

G03G 1310

US Classification:

430100

Abstract:

Process for reversal development of a latent electrostatic image in a layer on a conductive support by developing with an electrostatic developer having electrostatically charged toner particles by (a) generating imagewise areas in the layer having different rates of charge decay and/or charge acceptance, (b) charging the layer, (c) allowing formation of an electrostatic image corresponding to the imagewise generated areas by differential charge decay and/or charge acceptance, (d) creating an electrical field to attract toner particles preferentially to the areas of lesser charge, and (e) developing the areas of lesser charge with electrostatically charged toner particles having the same polarity as that of the charged layer. The developed image can be transferred to a receptor surface, e. g. , paper. The process is useful with many type photosensitive masters in preparing reversal images with the use of only one master, toner and film original.

US Patent:

61043826, Aug 15, 2000

Filed:

Apr 10, 1998

Appl. No.:

9/058259

Inventors:

Kenneth M. Martin - Palo Alto CA
Michael D. Levin - Sunnyvale CA
Adam C. Braun - Sunnyvale CA

Assignee:

Immersion Corporation - San Jose CA

International Classification:

G06F 3033

US Classification:

345161

Abstract:

A mechanism for providing selective engagement of spring members to a user manipulatable object in a force feedback interface device. A moveable member included in a force feedback mechanism is moveable in a degree of freedom to transmit forces to the user manipulatable object, such as a joystick handle. A spring member can be selectively coupled and decoupled between a grounded member and the moveable member. The spring member provides a spring force on the moveable member that biases the joystick handle to a desired position, such as the center of the degree of freedom. A dynamic calibration procedure reduces inaccuracies when sensing the position of the user manipulandum by only reading new range limits when the actuator is not outputting a force in the direction of that limit. A capstan drive mechanism is preferably coupled between the actuator and linkage mechanism, where a capstan drum includes a curved end over which the cable is routed, the curved end including flanges to substantially prevent the cable from slipping of the sides of the end. The capstan drum includes a tensioning spring member coupled to one or both ends of the cable for tensioning the cable.

US Patent:

53277902, Jul 12, 1994

Filed:

Jun 19, 1992

Appl. No.:

7/900663

Inventors:

Michael Levin - Franklin Park NJ
J. Kenneth Salisbury - Cambridge MA

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G01L 302

US Classification:

73862325

Abstract:

A reaction torque actuator has a sensor operatively coupled between a motor housing and an outer housing. A pair of bearings support the motor within the outer housing in a spaced, concentric relationship. The bearings allow a mutual angular displacement of the housing about the axis of rotation of the output shaft of the motor, but they isolate the sensor from the axial and radial moments. A resolver surrounds the shaft at its output end to produce a signal that accurately measures the angular position of the shaft. A controller regulates power to the motor windings as a function of signals from the resolver and the sensor and torque commands. In a preferred form for use in robotics where very accurate force control is desired, the motor: is a brushless D. C. motor, the sensor is of the strain gauge type, and the controller uses high quality amplifiers, sine wave commutation, cable shielding, and filtering to limit the noise generated by electronic switching.