Patents Assigned to Schrader-Bridgeport International, Inc.
  • Patent number: 7444860
    Abstract: A tire pressure monitoring system (TPMS) sensor grommet tool has a U-shaped portion adapted to be inserted between a grommet disposed on the stem of a TPMS sensor and a seat at the base of the stem in which the grommet resides to separate the grommet from the seat for removal of the grommet from the TPMS sensor. The tool might also include an installation opening adapted to be disposed about the stem to guide and/or push a new grommet down the stem and into the seat. The leading edge of the tool, and/or and the U-shaped portion, may be beveled, to facilitate insertion of the U-shaped portion between the grommet and the seat. A flat side or ledge of the U-shaped portion may be adapted to separate the grommet from the seat, such as by levering against the seat to lift the grommet from the seat for removal.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: November 4, 2008
    Assignee: Schrader Bridgeport International, Inc.
    Inventor: Jay Poparad
  • Patent number: 7423532
    Abstract: A tire monitor system employs a single RF detector mounted on the vehicle. The tire monitor system also includes a control unit and a receiver. The single RF detector is positioned to be proximate a front axle or a rear axle. The RF detector also may be positioned off-center. The control unit distinguishes front tire monitors from rear tire monitors by comparing a number of RF transmissions received by each tire monitor. The control unit also may distinguish between left tire monitors and right tire monitors by comparing the number of RF transmissions received by each tire monitor. In other embodiment, the tire monitor system may further use a received signal strength and/or acceleration signals to determine position information of the tire monitors.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: September 9, 2008
    Assignee: Schrader Bridgeport International, Inc.
    Inventors: William David Stewart, Idir Boudaoud, Thomas David Stephen McClelland
  • Patent number: 7362218
    Abstract: A tire monitor for mounting to a vehicle as part of a remote tire monitoring system includes a tire condition sensor to produce a tire condition signal, a controller coupled to the tire condition sensor to control operation of the tire monitor, and a radio circuit coupled to the controller to transmit radio signals based at least in part on the tire condition signal. A shock sensor is coupled to the controller of the tire monitor to produce a motion signal indicating motion of the tire monitor.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: April 22, 2008
    Assignee: Schrader Bridgeport International, Inc.
    Inventors: Alan Kenneth McCall, William David Stewart
  • Patent number: 7114344
    Abstract: An air conditioner service fitting is provided and includes a valve body comprising a threaded bore and an annular valve seat extending around the bore. The valve body is configured and the valve seat is positioned such that all fluid that passes through the bore crosses the valve seat. A twist-to-open valve is disposed in the bore and threadedly engages with the valve body. The twist-to-open valve includes a valve element configured to form a polymer-to-metal seal with the valve seat. The polymer-to-metal seal stops substantially all fluid flow through the bore and the flow path when the twist-to-open valve is closed. The valve body further includes an external connection feature disposed around the bore. The valve body comprises an external sealing surface.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: October 3, 2006
    Assignee: Schrader-Bridgeport International, Inc.
    Inventors: Major H. Gilbert, Jeffrey A. Schultz
  • Patent number: 7088226
    Abstract: A tire characteristic monitoring method allows automatic programming of tire position information in a remote tire pressure monitoring system (10). The method includes, from a remotely located exciter (16) using a primary coil (18) to transmit a relatively low frequency signal to a secondary coil (L1) of a tire monitor (12) associated with a tire of a vehicle. The method further includes the step of, at the tire monitor, in response to the relatively low frequency signal, transmitting a relatively high transmitting signal to convey data. The data are received at the exciter and subsequently loaded into a receiving unit (14) of the vehicle.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: August 8, 2006
    Assignee: Schrader-Bridgeport International, Inc.
    Inventors: Thomas David Stephen McClelland, David Samuel Porter, Alastair Thomas Johnston
  • Patent number: 7010968
    Abstract: A tire monitor for use in conjunction with a remote tire monitoring system of a vehicle includes in one embodiment a dual-axis accelerometer and a control circuit. The control circuit determines position information such as the right/left position of the tire monitor on the vehicle in response to an acceleration signal from the dual axis accelerometer. The tire monitor transmits tire data and the position information to a control unit of a remote tire monitor system. The control unit determines additional position information such as front/rear position of the transmitting tire monitor by detecting signal strength of the transmission. This allows the system to automatically re-learn the position of tire monitors on the vehicle, even after tire rotation.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: March 14, 2006
    Assignee: Schrader Bridgeport International, Inc.
    Inventors: William David Stewart, Idir Boudaoud, Nevin Robert Molyneaux, Samuel Kane Strahan, Alan Kenneth McCall, Trevor Anthony Jordan
  • Patent number: 6970076
    Abstract: A tire monitor (100) mountable inside a tire (200) includes a tire data sensor (402) and a transmitter (406). The transmitter is configured to transmit tire data at one or more frequencies within a passband of frequencies of the tire. The transmitter of the tire monitor is tuned in relation to the characteristic frequency response of the tire to ensure reliable transmission and reception of radio signals conveying the tire data to a remote receiver.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: November 29, 2005
    Assignee: Schrader-Bridgeport International, Inc.
    Inventor: Fred L. Starkey
  • Patent number: 6906624
    Abstract: A tire characteristic monitoring method allows automatic programming of tire position information in a remote tire pressure monitoring system (10). The method includes, from a remotely located exciter (16) using a primary coil (18) to transmit a relatively low frequency signal to a secondary coil (L1) of a tire monitor (12) associated with a tire of a vehicle. The method further includes the step of, at the tire monitor, in response to the relatively low frequency signal, transmitting a relatively high transmitting signal to convey data. The data are received at the exciter and subsequently loaded into a receiving unit (14) of the vehicle.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: June 14, 2005
    Assignee: Schrader-Bridgeport International, Inc.
    Inventors: Thomas David Stephen McClelland, David Samuel Porter, Alastair Thomas Johnston
  • Patent number: 6882270
    Abstract: A tire monitor system and method rely on only two RF detector mounted on the vehicle, one in close proximity to one of the front wheels and the other in close proximity to one of the rear wheels. An RF detector can distinguish between its local transmitter and the other transmitter on the same axle by the amount of signal received. Every time the controller decodes transmitted RF data, the controller looks to see if and which RF detector has detected the transmission. The controller can then determine over a short period of time which sensor identifier belongs to which corner of the vehicle.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: April 19, 2005
    Assignee: Schrader Bridgeport International, Inc.
    Inventors: William David Stewart, Idir Boudaoud, Thomas David Stephen McClelland
  • Patent number: 6864785
    Abstract: In a remote tire monitor system, radio frequency (RF) signals including tire data are transmitted from a plurality of tire monitors at wheels of a vehicle. At an RF receiver, the signals are received and tire data is detected. The RF signals are detected at a receiving RF detector associated with the transmitting tire monitor. The receiving RF detector produces a transmission indication in response to the received RF signals. A control unit is coupled to the RF receiver and the RF detector. The control unit receives the tire data and the transmission indication and associates a position of the transmitting tire monitor with the tire data in response to transmission indication. This permits automatic update of the position of tire monitors on the vehicle.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: March 8, 2005
    Assignee: Schrader-Bridgeport International, Inc.
    Inventors: Emmanuel Marguet, William David Stewart
  • Patent number: 6809639
    Abstract: In a remote tire monitor system, radio frequency (RF) signals including tire data are transmitted from a plurality of tire monitors at wheels of a vehicle. At an RF receiver, the signals are received and tire data is detected. The RF signals are detected at a receiving RF detector associated with the transmitting tire monitor. The receiving RF detector produces a transmission indication in response to the received RF signals. A control unit is coupled to the RF receiver and the RF detector. The control unit receives the tire data and the transmission indication and associates a position of the transmitting tire monitor with the tire data in response to transmission indication. This permits automatic update of the position of tire monitors on the vehicle.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: October 26, 2004
    Assignee: Schrader-Bridgeport International, Inc.
    Inventors: Emmanuel Marguet, William David Stewart
  • Publication number: 20040183665
    Abstract: A tire characteristic monitoring method allows automatic programming of tire position information in a remote tire pressure monitoring system (10). The method includes, from a remotely located exciter (16) using a primary coil (18) to transmit a relatively low frequency signal to a secondary coil (L1) of a tire monitor (12) associated with a tire of a vehicle. The method further includes the step of, at the tire monitor, in response to the relatively low frequency signal, transmitting a relatively high transmitting signal to convey data. The data are received at the exciter and subsequently loaded into a receiving unit (14) of the vehicle.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 23, 2004
    Applicant: Schrader Bridgeport International, Inc.
    Inventors: Thomas David Stephen McClelland, David Samuel Porter, Alastair Thomas Johnston
  • Publication number: 20040183664
    Abstract: A tire characteristic monitoring method allows automatic programming of tire position information in a remote tire pressure monitoring system (10). The method includes, from a remotely located exciter (16) using a primary coil (18) to transmit a relatively low frequency signal to a secondary coil (L1) of a tire monitor (12) associated with a tire of a vehicle. The method further includes the step of, at the tire monitor, in response to the relatively low frequency signal, transmitting a relatively high transmitting signal to convey data. The data are received at the exciter and subsequently loaded into a receiving unit (14) of the vehicle.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 23, 2004
    Applicant: Schrader Bridgeport International, Inc.
    Inventors: Thomas David Stephen McClelland, David Samuel Porter, Alastair Thomas Johnston
  • Patent number: 6710708
    Abstract: A tire characteristic monitoring method allows automatic programming of tire position information in a remote tire pressure monitoring system (10). The method includes, from a remotely located exciter (16) using a primary coil (18) to transmit a relatively low frequency signal to a secondary coil (L1) of a tire monitor (12) associated with a tire of a vehicle. The method further includes the step of, at the tire monitor, in response to the relatively low frequency signal, transmitting a relatively high transmitting signal to convey data. The data are received at the exciter and subsequently loaded into a receiving unit (14) of the vehicle.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: March 23, 2004
    Assignee: Schrader-Bridgeport International, Inc.
    Inventors: Thomas David Stephen McClelland, David Samuel Porter, Alastair Thomas Johnston
  • Publication number: 20030117277
    Abstract: In a remote tire monitor system, radio frequency (RF) signals including tire data are transmitted from a plurality of tire monitors at wheels of a vehicle. At an RF receiver, the signals are received and tire data is detected. The RF signals are detected at a receiving RF detector associated with the transmitting tire monitor. The receiving RF detector produces a transmission indication in response to the received RF signals. A control unit is coupled to the RF receiver and the RF detector. The control unit receives the tire data and the transmission indication and associates a position of the transmitting tire monitor with the tire data in response to transmission indication. This permits automatic update of the position of tire monitors on the vehicle.
    Type: Application
    Filed: February 10, 2003
    Publication date: June 26, 2003
    Applicant: Schrader Bridgeport International, Inc.
    Inventors: Emmanuel Marguet, William David Stewart
  • Publication number: 20030117276
    Abstract: In a remote tire monitor system, radio frequency (RF) signals including tire data are transmitted from a plurality of tire monitors at wheels of a vehicle. At an RF receiver, the signals are received and tire data is detected. The RF signals are detected at a receiving RF detector associated with the transmitting tire monitor. The receiving RF detector produces a transmission indication in response to the received RF signals. A control unit is coupled to the RF receiver and the RF detector. The control unit receives the tire data and the transmission indication and associates a position of the transmitting tire monitor with the tire data in response to transmission indication. This permits automatic update of the position of tire monitors on the vehicle.
    Type: Application
    Filed: February 5, 2003
    Publication date: June 26, 2003
    Applicant: Schrader Bridgeport International, Inc.
    Inventors: Emmanuel Marguet, William David Stewart
  • Publication number: 20030111115
    Abstract: A valve assembly includes a valve body having a passageway and first and second oppositely facing valve seats that extend around the passageway. First and second valve elements are positioned in the passageway to seal against the respective valve seats, and a spring biases the first valve element to the closed position against the first valve seat. The valve seats are spaced sufficiently closely together along the passageway that the first valve element, when positioned against the first valve seat, holds the second valve element away from the second valve seat. For this reason, the spring also biases the second valve element away from the second valve seat.
    Type: Application
    Filed: December 7, 2001
    Publication date: June 19, 2003
    Applicant: Schrader-Bridgeport International, Inc.
    Inventors: Jeffrey A. Schultz, Scott M. Scarborough
  • Publication number: 20030112138
    Abstract: In a remote tire monitor system, radio frequency (RF) signals including tire data are transmitted from a plurality of tire monitors at wheels of a vehicle. At an RF receiver, the signals are received and tire data is detected. The RF signals are detected at a receiving RF detector associated with the transmitting tire monitor. The receiving RF detector produces a transmission indication in response to the received RF signals. A control unit is coupled to the RF receiver and the RF detector. The control unit receives the tire data and the transmission indication and associates a position of the transmitting tire monitor with the tire data in response to transmission indication. This permits automatic update of the position of tire monitors on the vehicle.
    Type: Application
    Filed: February 5, 2003
    Publication date: June 19, 2003
    Applicant: Schrader Bridgeport International, Inc.
    Inventors: Emmanuel Marguet, William David Stewart
  • Patent number: D624010
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: September 21, 2010
    Assignee: Schrader-Bridgeport International, Inc.
    Inventor: Damien Tournier
  • Patent number: D637551
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: May 10, 2011
    Assignee: Schrader-Bridgeport International, Inc.
    Inventor: Damien Tournier