Patents by Inventor Rajesh Das

Rajesh Das has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9955054
    Abstract: A method for assembling a camera includes providing a circuit board with a first surface defining a plane and an aperture extending entirely through the circuit board. An image sensor is fixed on the first surface. A lens holder is provided with a lens barrel defining a central axis and supporting a lens in a fixed position relative to the lens barrel. A post extends outward from the lens barrel in a first direction. The circuit board and the lens holder are oriented such that the plane defined by a first surface of the circuit board is perpendicular to the central axis. The circuit board and the lens holder are axially joined so that the post is received by the aperture. A final alignment of the image sensor relative to the central axis and the lens is non-adjustably fixed upon sliding the post through the aperture.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: April 24, 2018
    Assignee: ROBERT BOSCH GmbH
    Inventor: Rajesh Das
  • Patent number: 9913356
    Abstract: A connected light node (CLN) induction light ballast module for powering an induction lamp includes a printed circuit board having components mounted thereon and an earth ground region electrically isolated from a PCB ground region. A heat sink is disposed on a lower layer of the printed circuit board and electrically connected to the earth ground region, wherein a parasitic capacitance occurs between the printed circuit board ground region and the heat sink. A capacitive shield sandwiched by a lower insulating pad and an upper insulating pad is electrically isolated from the heat sink supporting the shield. A damping network electrically connects the capacitive shield to the PCB ground region. Switch-mode power converters are mounted above the upper insulating pad and the shield. The damping network suppresses noise by a parasitic capacitance between the PCB ground region and the heat sink during high frequency power converter operation.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: March 6, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Cyrous Rostamzadeh, Shijie Wang, Rajesh Das, Steven Gladstein, Timothy Foster, Allen Marecki, Sanjai Master
  • Publication number: 20170181257
    Abstract: A connected light node (CLN) induction light ballast module for powering an induction lamp includes a printed circuit board having components mounted thereon and an earth ground region electrically isolated from a PCB ground region. A heat sink is disposed on a lower layer of the printed circuit board and electrically connected to the earth ground region, wherein a parasitic capacitance occurs between the printed circuit board ground region and the heat sink. A capacitive shield sandwiched by a lower insulating pad and an upper insulating pad is electrically isolated from the heat sink supporting the shield. A damping network electrically connects the capacitive shield to the PCB ground region. Switch-mode power converters are mounted above the upper insulating pad and the shield. The damping network suppresses noise by a parasitic capacitance between the PCB ground region and the heat sink during high frequency power converter operation.
    Type: Application
    Filed: June 16, 2014
    Publication date: June 22, 2017
    Inventors: Cyrous Rostamzadeh, Shijie Wang, Rajesh Das, Steven Gladstein, Timothy Foster, Allen Marecki, Sanjai Master
  • Publication number: 20160234410
    Abstract: A method for assembling a camera includes providing a circuit board with a first surface defining a plane and an aperture extending entirely through the circuit board. An image sensor is fixed on the first surface. A lens holder is provided with a lens barrel defining a central axis and supporting a lens in a fixed position relative to the lens barrel. A post extends outward from the lens barrel in a first direction. The circuit board and the lens holder are oriented such that the plane defined by a first surface of the circuit board is perpendicular to the central axis. The circuit board and the lens holder are axially joined so that the post is received by the aperture. A final alignment of the image sensor relative to the central axis and the lens is non-adjustably fixed upon sliding the post through the aperture.
    Type: Application
    Filed: February 5, 2015
    Publication date: August 11, 2016
    Inventor: Rajesh Das
  • Patent number: 8818612
    Abstract: A diagnostic connector module for a vehicle includes an electronic communication module and a housing enclosing the electronic communication module. The housing has integrated connectors electrically connected to the electronic communication module. The integrated connectors include a diagnostic service connector for connection with an external diagnostic scan tool and a vehicle bus connector connectable to a vehicle bus. The diagnostic service connector has a plurality of female pin-receptors electrically connected to the electronic communication module, and the vehicle bus connector has a plurality of terminals electrically connected to the electronic communication module. A vehicle diagnostic system including the diagnostic connector module is also provided.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: August 26, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Rajesh Das
  • Patent number: 8702862
    Abstract: The present invention relates to a universal metallic/pearlescent colorant composition that is free of VOCs including alkylphenol ethoxylate (APE) and formaldehyde. The colorant composition comprises substantially no resin and comprises microcrystalline cellulose and optionally a synthetic silicate to disperse the metallic pigments.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: April 22, 2014
    Assignee: Columbia Insurance Company
    Inventors: Rajesh Das, Mohammad Asif, Glen Cooper, Robert Sheerin
  • Publication number: 20140007794
    Abstract: The present invention relates to a universal metallic/pearlescent colorant composition that is free of VOCs including alkylphenol ethoxylate (APE) and formaldehyde. The colorant composition comprises substantially no resin and comprises microcrystalline cellulose and optionally a synthetic silicate to disperse the metallic pigments.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 9, 2014
    Applicant: Columbia Insurance Company
    Inventors: Rajesh Das, Mohammad Asif, Glen Cooper, Robert Sheerin
  • Publication number: 20130066514
    Abstract: A diagnostic connector module for a vehicle includes an electronic communication module and a housing enclosing the electronic communication module. The housing has integrated connectors electrically connected to the electronic communication module. The integrated connectors include a diagnostic service connector for connection with an external diagnostic scan tool and a vehicle bus connector connectable to a vehicle bus. The diagnostic service connector has a plurality of female pin-receptors electrically connected to the electronic communication module, and the vehicle bus connector has a plurality of terminals electrically connected to the electronic communication module. A vehicle diagnostic system including the diagnostic connector module is also provided.
    Type: Application
    Filed: September 14, 2011
    Publication date: March 14, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventor: Rajesh Das
  • Publication number: 20120081866
    Abstract: An apparatus includes, in combination, an electrical component and a bracket. The electrical component has a first end configured to electrically connect to a circuit board. The electrical component defines an axis and has a width measured in a direction transverse to the axis. The bracket has a body defining a bore shaped to receive the electrical component. The body further includes a break in communication with the bore to allow expansion of the bore. In an at-rest state of the bracket, the bore has a bore width smaller than the width of the electrical component, and when the electrical component is received in the bore, the bracket is elastically deformed such that the electrical component is clamped in the transverse direction solely by the residual stress within the bracket without any additional clamp or fastener.
    Type: Application
    Filed: October 1, 2010
    Publication date: April 5, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Paul Wickett, Bernd Eckert, Rajesh Das
  • Patent number: 6916997
    Abstract: Automotive load cells having centralized, multi-axis, loose tolerance overload/limit stops provide improved strain gauge response. The modular, integrated stop assemblies magnify sensor substrate deflection by use of opposed concave (Belleville) springs are used in direct contact with the substrate to accommodate ±Z axis deflection and Mx/My moment angular rotation. A flanged guide member on the load stud permits a wide range of geometries. The substrate is thickened around the load stud hole and the outboard support bolt holes. Hollow rivets assist in design modularity. Strain gauges are placed at the yield zones symmetrically with respect to the X axis. The substrate hole Mx/My gap is larger than the stop bracket hole to insure a positive stop for Mx/My moments prior to yield. The inventive multi-axis stop assembly is used in any type load cell, including rectangular, thinned, notched, necked/dogbone, or cantilever substrates with any strain gauge layout configuration.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: July 12, 2005
    Assignee: Robert Bosch Corporation
    Inventors: Rajeev Thakur, Alexander Golshteyn, Russ Watts, Darren Lee, Rajesh Das
  • Publication number: 20030106723
    Abstract: Automotive load cells having centralized, multi-axis, loose tolerance overload/limit stops provide improved strain gauge response. The modular, integrated stop assemblies magnify sensor substrate deflection by use of opposed concave (Belleville) springs are used in direct contact with the substrate to accommodate ±Z axis deflection and Mx/My moment angular rotation. A flanged guide member on the load stud permits a wide range of geometries. The substrate is thickened around the load stud hole and the outboard support bolt holes. Hollow rivets assist in design modularity. Strain gauges are placed at the yield zones symmetrically with respect to the X axis. The substrate hole Mx/My gap is larger than the stop bracket hole to insure a positive stop for Mx/My moments prior to yield. The inventive multi-axis stop assembly is used in any type load cell, including rectangular, thinned, notched, necked/dogbone, or cantilever substrates with any strain gauge layout configuration.
    Type: Application
    Filed: December 6, 2002
    Publication date: June 12, 2003
    Inventors: Rajeev Thakur, Alexander Golshteyn, Russ Watts, Darren Lee, Rajesh Das