CHANDRASHEKHAR H JOSHI
Engineering in Bedford, MA
License number
Massachusetts 32580
Issued Date
Jan 24, 1986
Expiration Date
Jun 30, 2008
Type
Mechanical Engineer
Address
Address
Bedford, MA 01730
Professional information
Fuel Composition Derived From Biodiesel
US Patent:
2011001, Jan 27, 2011
Filed:
Jul 22, 2010
Appl. No.:
12/841483
Inventors:
Chandrashekhar H. Joshi - Bedford MA, US
International Classification:
C10L 1/19, C10L 1/182
US Classification:
44388, 44451
Abstract:
The present invention relates to a fuel composition and method for the preparation thereof. The fuel composition is particularly useful as an aviation fuel and as a ground transportation fuel in cold weather environments. The fuel composition includes oil derived from a biological source such as vegetable oil and/or animal fat. Further, the fuel composition can be based on biodiesel. Moreover, the fuel composition of the present invention includes a reduced amount of oxygen as compared to the biodiesel or substantially no oxygen.
Connection Between High Temperature Superconductors And Superconductor Precursors
US Patent:
5321003, Jun 14, 1994
Filed:
Sep 18, 1991
Appl. No.:
7/761666
Inventors:
Chandrashekhar H. Joshi - Bedford MA
Christopher A. Craven - Bedford MA
Christopher A. Craven - Bedford MA
Assignee:
American Superconductor Corporation - Westborough MA
International Classification:
B32B 300
US Classification:
505220
Abstract:
An autogenous superconducting joint metallurgically bonding a pair of shaped superconducting pieces. Each of the pieces is formed by combining the metallic elements of a superconducting oxide in substantially the stoichiometric proportions needed to form the superconducting oxide, and then forming the combined metallic elements into a shaped piece. The microstructure of the joint is substantially the same as that of the portions of the pieces adjacent the joint.
Production Of Hydrocarbon Fuels From Plant Oil And Animal Fat
US Patent:
2012019, Aug 2, 2012
Filed:
Jan 31, 2012
Appl. No.:
13/362314
Inventors:
CHANDRASHEKHAR H. JOSHI - Bedford MA, US
Michael Glenn Horner - West Roxbury MA, US
Michael Glenn Horner - West Roxbury MA, US
International Classification:
C07C 9/22, C25B 3/10, C07C 1/207, C07C 11/02, C07C 9/15
US Classification:
585 16, 585324, 585310, 205415
Abstract:
The present invention relates to fuel compositions and methods of making the same. The fuel compositions include hydrocarbon derived from a biological source selected from plant oil, animal fat and combinations thereof. The hydrocarbon and the fuel compositions are at least substantially oxygen-free. In particular, the fuel compositions are useful in cold temperature environments and as aviation fuel.
Terbium-Dysprosium-Iron Magnetostrictive Materials And Devices Using These Materials
US Patent:
7179339, Feb 20, 2007
Filed:
Jan 24, 2003
Appl. No.:
10/350649
Inventors:
Chiu-Ying Tai - Chelmsford MA, US
Chandrashekhar H. Joshi - Bedford MA, US
Chandrashekhar H. Joshi - Bedford MA, US
Assignee:
Energen, Inc. - Lowell MA
International Classification:
H01F 1/055
US Classification:
148301
Abstract:
A terbium-dysprosium-iron magnetostrictive material of the type TbDyFewherein x is less than 0. 7, and y is less than or equal to 0. 1, and devices using these materials.
Magnetostrictive Actuator
US Patent:
6246132, Jun 12, 2001
Filed:
Dec 29, 1998
Appl. No.:
9/222449
Inventors:
Chandrashekhar H. Joshi - Bedford MA
Bruce R. Bent - Scituate MA
Bruce R. Bent - Scituate MA
Assignee:
Energen, Inc. - Billerica MA
International Classification:
H02N 204
US Classification:
310 26
Abstract:
A magnetostrictive actuator, comprising: a magnetostrictive member which elongates upon application of a magnetic field; a translating member mechanically coupled to the magnetostrictive member, for translating the change in length of the magnetostrictive member into a desired action; and a selectively-energized coil surrounding the magnetostrictive member, to apply a magnetic field to the magnetostrictive member, and thus selectively change the length of the magnetostrictive member, and thereby cause the translating member to create the desired action.
Superconducting Rotor
US Patent:
5482919, Jan 9, 1996
Filed:
Sep 15, 1993
Appl. No.:
8/122007
Inventors:
Chandrashekhar H. Joshi - Bedford MA
Assignee:
American Superconductor Corporation - Westborough MA
International Classification:
H02K 900, H02K 922, F25B 900
US Classification:
310 52
Abstract:
The superconducting rotor includes at least one field coil made of a superconductor material having a given superconducting transition temperature. A cryocooler system is mounted for rotation with the rotor. The cryocooler includes a cold head portion mounted in heat transfer relation with the field coil to cool the field coil to a temperature below its transition temperature and includes a piston/regenerator adapted to allow passage of a working fluid at a mass flow rate which is substantially uniform over the cross-section of the piston/regenerator during operation of the system. Heat is conducted away from the field coils by heat pipes or by conduction through high thermally conductive material. Mounting the cryocooler cold head for rotation with the rotor eliminates the use of a cryogenic liquid pool for rotor cooling.
Stirling Cycle Machine
US Patent:
4930314, Jun 5, 1990
Filed:
Sep 8, 1989
Appl. No.:
7/404605
Inventors:
Sibley C. Burnett - Cardiff by the Sea CA
John R. Purcell - San Diego CA
William P. Creedon - San Diego CA
Chandrashekhar H. Joshi - Bedford MA
John R. Purcell - San Diego CA
William P. Creedon - San Diego CA
Chandrashekhar H. Joshi - Bedford MA
Assignee:
CDC Partners - San Diego CA
International Classification:
F02G 104
US Classification:
60517
Abstract:
Improved Stirling cycle machine including at least a pair of eccentric disks fixed to a pair of rotatable shafts in phase with each other and which eccentric disks upon rotation of the shafts (in opposite directions in the preferred embodiment) also rotate (in opposite directions in the preferred embodiment) and impart upward movement to a bellows defining a variable-volume compression or expansion chamber with a reduced tendency to also impart side thrust, rocking motion, or lateral movement to the bellows whereby bellows wear is reduced and the life of the bellows and the Stirling cycle machine is increased.
Active Vibration Isolation System
US Patent:
2003016, Sep 11, 2003
Filed:
Feb 12, 2003
Appl. No.:
10/365696
Inventors:
Zhixiu Han - Acton MA, US
Anil Mavanur - Worcester MA, US
Chandrashekhar Joshi - Bedford MA, US
Anil Mavanur - Worcester MA, US
Chandrashekhar Joshi - Bedford MA, US
International Classification:
F16F009/53, F16M011/00
US Classification:
188/267100, 267/136000
Abstract:
A vibration isolation system, with an actuator having two nested, relatively movable members defining an interior portion, and a magnetostrictive member coupled to both nested members and within the interior portion. A variable-strength magnetic field is applied to the magnetostrictive member, for controlling the elongation of the magnetostrictive member, to thereby control the relative positions of the two nested members.
Superconducting Magnetic Coil
US Patent:
5659277, Aug 19, 1997
Filed:
Sep 7, 1994
Appl. No.:
8/302358
Inventors:
Chandrashekhar H. Joshi - Bedford MA
John P. Voccio - Somerville MA
John P. Voccio - Somerville MA
Assignee:
American Superconductor Corporation - Westborough MA
International Classification:
H01F 100
US Classification:
335216
Abstract:
A superconducting magnetic coil formed of anisotropic high temperature superconducting material includes ferromagnetic flanges positioned coaxial to the longitudinal axis of the coil and at the ends of the superconducting coil to capture magnetic flux emanating from the coil so that the maximum perpendicular magnetic field at the end regions is reduced. A reduction in the maximum perpendicular magnetic field increases the critical current at the end regions thereby increasing the critical current at these regions and maintaining an overall higher critical current of the coil.
Magnetostrictive Thin Film Actuator
US Patent:
7250839, Jul 31, 2007
Filed:
Aug 9, 2004
Appl. No.:
10/914469
Inventors:
Livia M. Racz - Belmont MA, US
Chandrashekhar H. Joshi - Bedford MA, US
Chandrashekhar H. Joshi - Bedford MA, US
Assignee:
Energen, Inc. - Lowell MA
International Classification:
H01F 7/00, H01H 55/00
US Classification:
335215
Abstract:
Magnetostrictive actuator. The actuator includes a flexible substrate and a magnetostrictive film on the substrate. The shape of the flexible substrate is altered in the presence of a magnetic field.