Jahangir S Rastegar

US Patent:

6370833, Apr 16, 2002

Filed:

May 22, 2000

Appl. No.:

09/575548

Inventors:

Jahangir S. Rastegar - Stony Brook NY

Assignee:

The Research Foundation of State University of New York - Albany NY

International Classification:

E04C 302

US Classification:

527291, 527241

Abstract:

Compressive and tensile structural elements having an enclosure with walls surrounding a cavity. A non-compressible material is disposed in the cavity. The walls are shaped such that a force tending to compress or elongate the element by a first deflection causes an amplified second deflection of the walls into the non-compressible material. The second deflection exerts a compressive force against the non-compressible material, resulting in a resistance to the first deflection and the force tending to compress or elongate the structural element. The walls of the elements are configured for optimum rigidity and/or optimum damping. Structural beams and motion impartation devices utilize the structural elements to provide lightweight rigidity and/or damping.

US Patent:

6405533, Jun 18, 2002

Filed:

Jan 10, 2000

Appl. No.:

09/480042

Inventors:

Jahangir Rastegar - Stony Brook NY
Farshad Khorrami - Brooklyn NY

Assignee:

Polytechnic University - Brooklyn NY
Omnitek Research Development, Inc. - Brooklyn NY

International Classification:

F15B 700

US Classification:

60545, 60583, 92 90

Abstract:

Apparatus for compensating for positioning, pointing and/or orientation errors caused by deflections of structural members and components of a high performance machine or device and/or for reducing vibration inputs to such machine or device and/or for micro-positioning such machine or device so as to improve the operational performance of such machine or device. The apparatus utilizes one or more active-type actuators, such as piezoelectric ceramic type actuators, which are arranged in a predetermined manner relative to the machine or device. A servo control device operating in accordance with a predetermined algorithm may be utilized for controlling the actuators or, alternatively, the apparatus may operate in an open loop manner.

US Patent:

6474039, Nov 5, 2002

Filed:

Nov 14, 2001

Appl. No.:

09/992460

Inventors:

Jahangir S. Rastegar - Stony Brook NY

Assignee:

The Research Foundation of State University of New York - Albany NY

International Classification:

E04C 302

US Classification:

527292, 527371

Abstract:

Compressive and tensile structural elements having an enclosure with walls surrounding a cavity. A non-compressible material is disposed in the cavity. The walls are shaped such that a force tending to compress or elongate the element by a first deflection causes an amplified second deflection of the walls into the non-compressible material. The second deflection exerts a compressive force against the non-compressible material, resulting in a resistance to the first deflection and the force tending to compress or elongate the structural element. The walls of the elements are configured for optimum rigidity and/or optimum damping. Structural beams and motion impartation devices utilize the structural elements to provide lightweight rigidity and/or damping.

US Patent:

6575715, Jun 10, 2003

Filed:

Jun 6, 2000

Appl. No.:

09/588747

Inventors:

Jahangir S. Rastegar - Stony Brook NY

Assignee:

OmniTek Research Development, Inc. - Melville NY

International Classification:

F04B 1700

US Classification:

4174132, 417480

Abstract:

Various application are provided for an enclosure having a first wall and two or more second walls surrounding a cavity. The enclosure also has an inlet and outlet each in fluid communication with the cavity. The second walls each have at least a portion shaped such that a force acting on the first wall tending to deflect the element causes an amplified deflection of the second walls into the cavity. Such applications include a pump, a structure comprised of one or more enclosures, structural elements, and apparatus for storing and releasing energy.

US Patent:

6626040, Sep 30, 2003

Filed:

Jun 19, 2002

Appl. No.:

10/175529

Inventors:

Carlos M. Pereira - Tannersville PA
Jahangir S. Rastegar - Stony Brook NY

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01P 1500

US Classification:

7351438

Abstract:

A sensor including: a base; at least one component which moves relative to the base; and a locking device for locking the at least one component in a predetermined stationary position in response to an external stimulus. Where the sensor is an accelerometer, the external stimulus is preferably an acceleration of the sensor in which case the locking device locks the at least one component during periods in which the acceleration exceeds a predetermined value. The predetermined stationary position can be a null position taken by the at least one component corresponding to an acceleration that is substantially zero or an active position taken by the at least one component when acceleration equals a predicted acceleration other than zero. Further, the locking device can lock the at least one component actively or passively.

US Patent:

6679143, Jan 20, 2004

Filed:

Apr 11, 2002

Appl. No.:

10/121480

Inventors:

Jahangir Rastegar - Stony Brook NY
Thomas Spinelli - E. Northport NY

Assignee:

Omnitek Partners, LLC - Bay Shore NY

International Classification:

B25B 1900

US Classification:

81466, 173 935

Abstract:

A manually operated rotatable impact tool including: a driven member for retaining and driving a fastener about an axis, the driven member further having at least one impact stop offset from the axis; a driving member rotatably connected to the driven member for driving the driven member about the axis to loosen or tighten the fastener; an impact mass movable along a path in communication with the impact stop; a spring for biasing the impact mass away from an abutment on the driving member; a movable stop plate biased into the path and movable out from the path; and a stop mover rotating with the driving member for engaging and moving the movable stop plate from the path upon a predetermined angular rotation of the driving member; wherein rotation of the driving member forces the impact mass to abut the movable stop plate and compress the spring until the stop mover moves the movable stop plate from the path when the driving member is rotated the predetermined angular rotation thereby releasing the impact mass to strike the stop.

US Patent:

6684596, Feb 3, 2004

Filed:

Sep 16, 2002

Appl. No.:

10/244335

Inventors:

Jahangir S. Rastegar - Stony Brook NY 11790

International Classification:

E04C 302

US Classification:

527291, 527241, 527371

Abstract:

Compressive and tensile structural elements having an enclosure with walls surrounding a cavity. A non-compressible material is disposed in the cavity. The walls are shaped such that a force tending to compress or elongate the element by a first deflection causes an amplified second deflection of the walls into the non-compressible material. The second deflection exerts a compressive force against the non-compressible material, resulting in a resistance to the first deflection and the force tending to compress or elongate the structural element. The walls of the elements are configured for optimum rigidity and/or optimum damping. Structural beams and motion impartation devices utilize the structural elements to provide lightweight rigidity and/or damping.

US Patent:

6694970, Feb 24, 2004

Filed:

Jan 8, 2003

Appl. No.:

10/338494

Inventors:

Thomas Spinelli - East Northport NY
Jahangir S. Rastegar - Stony Brook NY

Assignee:

Omnitek Partners LLC - Bayshore NY

International Classification:

A61M 1500

US Classification:

12820024, 128848, 606199, 60620445

Abstract:

A device for opening nasal passages is provided. The device including: a strip of material having an adhesive on one surface thereof for applying the strip across a human nose; at least one biasing member attached or embedded in the strip, the at least one biasing member being fabricated from a material which exhibits a shape memory effect upon being heated toward a human body temperature, the at least one biasing member having a shape upon being heated toward the human body temperature which biases the nasal passages of the human nose toward an open position. In a variation of the device, the strip itself is at least partly fabricated from the material. In another variation, the shape memory material is replaced with a biasing material, which does not need the application of heat to bias the nasal passages open, such as spring steel or a resilient thermoplastic.