Probir K Chatterjea

US Patent:

6523520, Feb 25, 2003

Filed:

Jan 22, 2001

Appl. No.:

09/767010

Inventors:

Probir Chatterjea - Sleepy Hollow IL

Assignee:

Probir Chatterjea Associates, Inc. - Sleepy Hollow IL

International Classification:

F02B 7700

US Classification:

123198E, 123 4101

Abstract:

A cooling system for use in association with an engine encased within an engine compartment, having a remotely positioned cooling fan and radiator. The cooling system includes a containment member operably positioned within the engine compartment. The containment member includes an exposure opening which defines a cavity. The cooling system likewise includes a conduit associated with the containment member. The conduit includes a first end placed in fluid communication with the cavity and a second end extending outside of the engine compartment which is placed in fluid communication with the cooling fan. Circulation of the fan directs the passage of fluid from within the cavity and the conduit.

US Patent:

6523636, Feb 25, 2003

Filed:

Feb 22, 2001

Appl. No.:

09/790929

Inventors:

Probir Chatterjea - Sleepy Hollow IL

Assignee:

Probir Chatterjea Associates, Inc. - Sleepy Hollow IL

International Classification:

B60K 2600

US Classification:

180333, 180315, 180 62, 180 67, 192225

Abstract:

A motion control system for controlling the motion of a crawler having a left and right track. The system comprises a pivotally mounted controller; a steering control system hydraulically communicable with a pressurized fluid supply, a brake of each of a left and right track of a crawler and a clutch of each of a left and right track of a crawler, a direction control system hydraulically communicable with a pressurized fluid supply, a forward and a reverse transmission signal input, a steering speed controlling system for controlling the speed of a left track and a right track, and a transmission gear controlling system. The steering speed controlling system includes at least one selector. The transmission gear controlling system includes at least one transmission gear selector. The steering control system is positioned so that pivoting the controller in a first series of planes operates the steering control system. Similarly, pivoting the controller in a second series of planes operates the direction control system.

US Patent:

6634653, Oct 21, 2003

Filed:

Jul 17, 2001

Appl. No.:

09/907477

Inventors:

Probir Chatterjea - Sleepy Hollow IL

Assignee:

Probir Chatterjea Associates, Inc. - Sleepy Hollow IL

International Classification:

B60G 1700

US Classification:

280 55

Abstract:

A ride control system comprising a member for substantially equalizing pressure and ride valve having three positions, namely, a first inactive position, a second active position and an intermediate equalizing position. The substantial pressure equalizing member equalizing the pressure within the head side of at least one boom cylinder with an accumulator. The inactive position corresponding to one in which the ride valve assembly maintains isolation between the accumulator and at least one boom cylinder. The active position corresponding to one in which the ride valve assembly places the accumulator and at least one boom cylinder in communication with each other. The intermediate position corresponding to one in which the ride valve assembly maintains isolation between the accumulator and at least one boom cylinder and facilitates the activation of the substantial equalizing means.

US Patent:

6817125, Nov 16, 2004

Filed:

Oct 17, 2002

Appl. No.:

10/273005

Inventors:

Probir Chatterjea - Sleepy Hollow IL 60118

International Classification:

G09F 702

US Classification:

4061102, 4060615, 4066106, 4061103

Abstract:

A picture frame assembly comprising a body, a picture retaining assembly and a mounting assembly. The picture retaining assembly is associated with the body, and facilitates the display of a picture within the body. The mounting assembly comprises a wall engaging assembly attachable to a wall and a pivoting engagement assembly. The pivoting engagement assembly is hingedly associated with each of the wall engaging assembly and the body, to, in turn, rotate the body between a display position to a set-up position.

US Patent:

7634909, Dec 22, 2009

Filed:

May 12, 2006

Appl. No.:

11/433522

Inventors:

Probir Chatterjea - Sleepy Hollow IL, US

International Classification:

F15B 15/00
B62D 5/09

US Classification:

60338, 60469, 180442, 280 89

Abstract:

A travel jolt minimizing assembly for use in association with an articulated loader steering environment having a orbitrol pump, and a flow amplifier coupled to the orbitrol pump through a left orbitrol signal and a right orbitrol signal, and a steering cylinder coupled to the flow amplifier. The travel jolt minimizing assembly includes a system for temporarily diverting the left orbitrol signal within a predetermined degrees of a full articulation in a left direction and a system for temporarily diverting the right orbitrol signal within a predetermined degrees of a full articulation in a right direction. The invention further includes a response cushion assembly which minimizes jolts which occur upon a rapid change in direction.

US Patent:

20140054435, Feb 27, 2014

Filed:

Aug 23, 2012

Appl. No.:

13/593494

Inventors:

Probir Chatterjea - Sleepy Hollow IL, US

International Classification:

A47G 1/16

US Classification:

2484751

Abstract:

An image storage and display assembly having an image storage sub-assembly, an image board, an image display sub-assembly and a wall attachment sub-assembly. The image storage sub-assembly is configured for storing images that can be sequentially displayed on the image board, so that the images remain quickly accessible while being protectively stored.

US Patent:

42629691, Apr 21, 1981

Filed:

Jun 8, 1979

Appl. No.:

6/047520

Inventors:

Probir K. Chatterjea - Mount Prospect IL

Assignee:

International Harvester Company - Chicago IL

International Classification:

B60T 1322

US Classification:

303 71

Abstract:

A control for a spring-apply, pressure release brake system having a pilot signal-generating valve and a slave brake valve interconnected by a pilot signal line. Hydraulic pressure is directed to both the pilot valve and the slave valve. Manual stroking of the pilot valve modulates the pressure to the signal line. A spool within the slave valve senses both the signal pressure and the brake pressure and moves to an equilibrium position to equalize the signal and brake pressures.

US Patent:

40156192, Apr 5, 1977

Filed:

Mar 24, 1975

Appl. No.:

5/561119

Inventors:

Daniel B. Shore - Niles IL
Probir K. Chatterjea - Mount Prospect IL

Assignee:

International Harvester Company - Chicago IL

International Classification:

F15B 1306

US Classification:

137102

Abstract:

Clutch-brake steering unit having hydraulically actuated cylinders for controlling same to control rotation of a track-drive sprocket in a crawler tractor. Specifically a clutch cylinder and a brake cylinder provided in the unit have an inlet-outlet port in common, and are so arranged on a spring-applied-brake, hydraulically-applied-clutch basis that a single pressure signal in the inlet-outlet port alternately operates the cylinders to apply the brake and release the clutch, to apply the clutch and release the brake, or by proper modulation to partially engage either, i. e. , slip the clutch or drag the brake to intermediate degrees as desired.