Patents by Inventor Raj S. Roychoudhury

Raj S. Roychoudhury 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: 8475904
    Abstract: A hollow article is provided having a first wall, a second wall and a plurality of edge walls interconnecting the first wall and second wall. A covering is bonded to the hollow article, wherein the covering is bonded to the first wall, and is dimensioned to partially wrap around the hollow article.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: July 2, 2013
    Assignee: Salflex Polymers Limited
    Inventors: Stephen Hawkins, Raj S. Roychoudhury, David Flajnik
  • Patent number: 8459689
    Abstract: An energy management system for mounting in a vehicle, the energy management system comprising an inflatable bolster for mounting in a glove box door of a glove box of the vehicle, the inflatable bolster including an expansible hollow interior, an inflator module for inflating the expansible hollow interior, a front wall for projecting inwardly into the vehicle and away from the glove box on inflation of the expansible hollow interior, and a back wall located between the expansible hollow interior and the glove box, and a support structure for mounting to the inflatable bolster, the support structure being operable to resist the back wall being forced into the glove box due to inflation of the inflatable bolster.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: June 11, 2013
    Assignee: Salflex Polymers Ltd.
    Inventor: Raj S. Roychoudhury
  • Patent number: 8388020
    Abstract: Described is an inflatable multilayer bolster for a vehicle passenger compartment including a hollow body with back and front walls, an air chamber formed between them, and an inflator for injecting pressurized fluid to inflate the hollow body. Preferably, both the front and back walls have an inner layer made of a structural deformable material and an outer surfacing layer co-extruded with the inner layer. Also described is a method of manufacturing the multilayer bolster by co-extruding first and second polymers through a die to produce a parison, and then blow-molding the parison to form the hollow body. Thus the front wall and preferably the back wall as well have an inner layer made of the first polymer in a structural deformable condition and an outer surfacing layer made of the second polymer. This co-extruded multilayer constructed bolster allows efficient manufacturing, structural, inflation and aesthetic characteristics.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 5, 2013
    Assignee: Salflex Polymers Ltd.
    Inventors: Rimas Ciplijauskas, Michael James Best, Babak Fana, Raj S. Roychoudhury
  • Publication number: 20120177876
    Abstract: A hollow article is provided, comprising a first wall and a second wall, where the first and second walls are positioned in opposing relationship and define a space therebetween. A plurality of protruding structural pillars extend from the second wall and span the space, each of the structural pillars having an end surface integrally bonded with an inside surface of the first wall.
    Type: Application
    Filed: June 1, 2011
    Publication date: July 12, 2012
    Applicant: Saflex Polymers Ltd.
    Inventors: Raj S. Roychoudhury, Stephen Hawkins
  • Publication number: 20120114885
    Abstract: A hollow article is provided having a first wall, a second wall and a plurality of edge walls interconnecting the first wall and second wall. A covering is bonded to the hollow article, wherein the covering is bonded to the first wall, and is dimensioned to partially wrap around the hollow article.
    Type: Application
    Filed: November 3, 2011
    Publication date: May 10, 2012
    Applicant: SALFLEX POLYMERS LIMITED
    Inventors: Stephen Hawkins, Raj S. Roychoudhury, David Flajnik
  • Publication number: 20120112439
    Abstract: Provided is an active bolster for a vehicle occupant, the active bolster comprising a rear panel, an internal structure, and a front panel. The internal structure is disposed between the rear panel and the front panel, and the internal structure and rear panel together forming a hollow chamber in communication with an inflation device. The hollow chamber is expandable on activation of the inflation device. The internal structure has at least one expandable element such that upon pressurization of the hollow chamber by the inflation device, at least a portion of the at least one expandable element undergoes deformation to permit inflation of the hollow chamber, thereby displacing the rear panel rearwardly to an extended position.
    Type: Application
    Filed: August 23, 2011
    Publication date: May 10, 2012
    Applicant: Salflex Polymers Ltd.
    Inventor: Raj S. Roychoudhury
  • Publication number: 20120080871
    Abstract: This invention is in the field of safety devices to lessen injuries arising from impact in vehicles, particularly automobiles. A bolster which may be employed to reduce impact severity to passengers from either frontal or side impacts is activated by impact sensing devices. The housing of the bolster has a lateral length L. Upon activation, the bolster is inflated with an activating fluid and extends the lateral length L of bolster upon activation.
    Type: Application
    Filed: July 11, 2011
    Publication date: April 5, 2012
    Inventors: Raj S. Roychoudhury, Michael James Best, Timothy W. Chapman, Rimas Ciplijauskas, Changize Sadr, Ali Totonchian
  • Publication number: 20110272926
    Abstract: An inflatable active bolster for a vehicle occupant, the bolster having a first body section and a second body section interconnected by a living hinge. The first and second body sections are folded about the living hinge to form a hollow chamber. The first body section provides an outer surface for facing the vehicle occupant, while the second body section provides a support surface for coupling the inflatable active bolster to a vehicle. At least one of the first and second body sections provides at least one expansible element such that upon pressurization of the hollow chamber, at least a portion of the at least one expansible element undergoes deformation to permit inflation of the hollow chamber, thereby displacing the outer surface of the first body section outwardly to an extended position.
    Type: Application
    Filed: May 4, 2011
    Publication date: November 10, 2011
    Inventors: Raj S. Roychoudhury, Stephen Hawkins, Nicholas Herdegen, Dave Flajnik
  • Publication number: 20110198827
    Abstract: An energy management system for mounting in a vehicle, the energy management system comprising an inflatable bolster for mounting in a glove box door of a glove box of the vehicle, the inflatable bolster including an expansible hollow interior, an inflator module for inflating the expansible hollow interior, a front wall for projecting inwardly into the vehicle and away from the glove box on inflation of the expansible hollow interior, and a back wall located between the expansible hollow interior and the glove box, and a support structure for mounting to the inflatable bolster, the support structure being operable to resist the back wall being forced into the glove box due to inflation of the inflatable bolster.
    Type: Application
    Filed: December 23, 2010
    Publication date: August 18, 2011
    Inventor: Raj S. Roychoudhury
  • Patent number: 7992895
    Abstract: This invention is in the field of safety devices to lessen injuries arising from impact in vehicles, particularly automobiles. A bolster which may be employed to reduce impact severity to passengers from either frontal or side impacts is activated by impact sensing devices. The housing of the bolster has a lateral length L. Upon activation, the bolster is inflated with an activating fluid and extends the lateral length L of the bolster upon activation.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: August 9, 2011
    Assignee: Salflex Polymers Ltd.
    Inventors: Raj S. Roychoudhury, Michael James Best, Timothy W. Chapman, Rimas Ciplijauskas, Changize Sadr, Ali Totonchian
  • Publication number: 20110123739
    Abstract: Described is an inflatable multilayer bolster for a vehicle passenger compartment including a hollow body with back and front walls, an air chamber formed between them, and an inflator for injecting pressurized fluid to inflate the hollow body. Preferably, both the front and back walls have an inner layer made of a structural deformable material and an outer surfacing layer co-extruded with the inner layer. Also described is a method of manufacturing the multilayer bolster by co-extruding first and second polymers through a die to produce a parison, and then blow-molding the parison to form the hollow body. Thus the front wall and preferably the back wall as well have an inner layer made of the first polymer in a structural deformable condition and an outer surfacing layer made of the second polymer. This co-extruded multilayer constructed bolster allows efficient manufacturing, structural, inflation and aesthetic characteristics.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 26, 2011
    Inventors: Rimas Ciplijauskas, Michael James Best, Babak Fana, Raj S. Roychoudhury
  • Publication number: 20110115201
    Abstract: An inflatable bolster for use in a passenger compartment of a vehicle comprises a hollow body having a first wall having a central area and a circumferential area surrounding the central area, a second wall opposite the first wall, and an air chamber formed between the first and second walls. The inflatable bolster also comprises an inflator for injecting a pressurized fluid into the air chamber which is mounted to the hollow body. The inflatable bolster also comprises a plurality of concentric extension pleats formed in the first wall. The extension pleats extend around a major part of the circumferential area. The extension pleats contact the second wall at a plurality of contact points which are distributed across the second wall. The plurality of contact points is sufficient in number to at least partially suppress audible vibration of the second wall.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 19, 2011
    Inventors: Michael James Best, Raj S. Roychoudhury, Rimas Ciplijauskas, Babak Fana
  • Publication number: 20110109064
    Abstract: An inflatable bolster for use in a passenger compartment of a vehicle is provided having a hollow body, an inflator and an attachment mechanism for attaching the hollow body to the vehicle's mating surface. The attachment mechanism includes a base retained within a molded cavity within the hollow body, and a fastener projection extending outward from both the base and the hollow body. Another attachment mechanism is provided including a dovetail portion which extends outward from the hollow body and engages a slot in the mating surface.
    Type: Application
    Filed: April 14, 2009
    Publication date: May 12, 2011
    Inventors: Michael James Best, Raj S. Roychoudhury, Rimas Ciplijauskas, Babak Fana
  • Patent number: 7481457
    Abstract: A bolster for assembly to an instrument panel assembly of an automotive vehicle is provided. The vehicle has a steering column with a steering column axis and at least two energy absorbing brackets located laterally to either side of the steering column axis. The bolster comprises a unitary structure having a generally forward wall and a generally aft wall. The forward wall has a forward wall, forward surface. The forward wall, forward surface includes first and second bolster transfer surfaces for transferring forces from the bolster to the energy absorbing brackets. The bolster further comprises a plurality of generally laterally extending rib structures. The rib structures extend from adjacent the first bolster transfer surface to adjacent the second bolster transfer surface.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: January 27, 2009
    Assignee: Salflex Polymers Ltd.
    Inventors: Michael James Best, Dale Carson, Timothy W. Chapman, Rimas Ciplijauskas, Babak Fana, Gary Gerlach, Raj S. Roychoudhury, Changize Sadr, Ali Totonchian
  • Patent number: 7393013
    Abstract: A bolster for assembly to an instrument panel assembly of an automotive vehicle is provided. The vehicle has a steering column with a steering column axis and at least two energy absorbing brackets located laterally to either side of the steering column axis. The bolster comprises a unitary structure having a generally forward wall and a generally aft wall. The forward wall has a forward wall, forward surface. The forward wall, forward surface includes first and second bolster transfer surfaces for transferring forces from the bolster to the energy absorbing brackets. The bolster further comprises a plurality of generally laterally extending rib structures. The rib structures extend from adjacent the first bolster transfer surface to adjacent the second bolster transfer surface.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: July 1, 2008
    Assignee: Salflex Polymers Ltd.
    Inventors: Michael James Best, Dale Carson, Timothy W. Chapman, Rimas Ciplijauskas, Babak Fana, Gary Gerlach, Raj S. Roychoudhury, Changize Sadr, Ali Totonchian
  • Publication number: 20080150268
    Abstract: A bolster for assembly to an instrument panel assembly of an automotive vehicle is provided. The vehicle has a steering column with a steering column axis and at least two energy absorbing brackets located laterally to either side of the steering column axis. The bolster comprises a unitary structure having a generally forward wall and a generally aft wall. The forward wall has a forward wall, forward surface. The forward wall, forward surface includes first and second bolster transfer surfaces for transferring forces from the bolster to the energy absorbing brackets. The bolster further comprises a plurality of generally laterally extending rib structures. The rib structures extend from adjacent the first bolster transfer surface to adjacent the second bolster transfer surface.
    Type: Application
    Filed: March 6, 2008
    Publication date: June 26, 2008
    Inventors: Michael James Best, Dale Carson, Timothy W. Chapman, Rimas Ciplijauskas, Babak Fana, Gary Gerlach, Raj S. Roychoudhury, Changize Sadr, Ali Totonchian
  • Patent number: 6942244
    Abstract: New and useful constructions for an airbag cover and housing, and new and useful assembly technique for coupling the airbag housing and cover to form an airbag module, are provided. According to the present invention an airbag cover and housing are configured so that the cover is tightly fit over the housing as the cover is coupled to the housing. The housing has an array of hooks and retainers, each formed in one piece with the housing. The hooks and retainers are oriented toward each other and are configured to: (a) enable the cover to be tightly fit over the housing; (b) capture a portion of the cover between the hooks and the retainers; (c) prevent over travel of the cover during coupling of the cover with the housing; and (d) retain the cover securely coupled to the housing during deployment of an airbag from the module. Additionally, the configuration of the housing provides flexibility in the manner in which the housing can be formed, because it enables the housing to be formed e.g.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: September 13, 2005
    Assignee: Key Safety Systems, Inc.
    Inventor: Raj S. Roychoudhury
  • Publication number: 20040262889
    Abstract: New and useful constructions for an airbag cover and housing, and new and useful assembly technique for coupling the airbag housing and cover to form an airbag module, are provided. According to the present invention an airbag cover and housing are configured so that the cover is tightly fit over the housing as the cover is coupled to the housing. The housing has an array of hooks and retainers, each formed in one piece with the housing. The hooks and retainers are oriented toward each other and are configured to: (a) enable the cover to be tightly fit over the housing; (b) capture a portion of the cover between the hooks and the retainers; (c) prevent over travel of the cover during coupling of the cover with the housing; and (d) retain the cover securely coupled to the housing during deployment of an airbag from the module. Additionally, the configuration of the housing provides flexibility in the manner in which the housing can be formed, because it enables the housing to be formed e.g.
    Type: Application
    Filed: June 25, 2003
    Publication date: December 30, 2004
    Inventor: Raj S. Roychoudhury
  • Patent number: 6786510
    Abstract: A seat belt system for securing a seated occupant to a seat, the system comprising: a single continuous length of seat belt webbing, the seat belt including first and second ends; a first anchor located near the juncture of the seat belt and seat cushion with a buckle positioned on the other side of the cushion, a movable anchor guide or second web guide for orientating portions of the seat belt relative to the seat; second means for moving the seat belt away from the seat to encourage the occupant's entry onto the seat and for thereafter manipulating the seat belt about the seated occupant so that a portion of the seat belt forms a lap belt about the seated occupant and wherein other portions of the seat belt form two relatively criss-crossed shoulder belt segments of seat belt in front of the seated occupant.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: September 7, 2004
    Assignee: Key Safety Systems, Inc.
    Inventors: Raj S. Roychoudhury, Peter C. Kempf, Richard W. Koning
  • Publication number: 20040036270
    Abstract: A seat belt system for securing a seated occupant to a seat, the system comprising: a single continuous length of seat belt webbing, the seat belt including first and second ends; a first anchor located near the juncture of the seat belt and seat cushion with a buckle positioned on the other side of the cushion, a movable anchor guide or second web guide for orientating portions of the seat belt relative to the seat; second means for moving the seat belt away from the seat to encourage the occupant's entry onto the seat and for thereafter manipulating the seat belt about the seated occupant so that a portion of the seat belt forms a lap belt about the seated occupant and wherein other portions of the seat belt form two relatively criss-crossed shoulder belt segments of seat belt in front of the seated occupant.
    Type: Application
    Filed: August 20, 2002
    Publication date: February 26, 2004
    Applicant: Breed Automotive Technology, Inc.
    Inventors: Raj S. Roychoudhury, Peter C. Kempf, Richard W. Koning