Patents by Inventor John Schwab

John Schwab 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: 12158184
    Abstract: An insulated bearing includes an outer ring, a plurality of rolling elements, and an insulating cap. The outer ring has an inner rolling surface and an outer spiral groove, the rolling elements are in rolling contact with the inner rolling surface, and the insulating cap is screwed onto the outer ring. The insulating cap has an inner spiral, complementary to the outer spiral groove. In an example embodiment, the outer spiral groove comprises a cross-section having a shape selected from the group consisting of a rectangle, a triangle, and a trapezoid. In an example embodiment, the outer spiral groove has between 2 and 4 revolutions. In an example embodiment, the outer spiral groove has a width of 4 millimeters or less.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: December 3, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Guihui Zhong, Venkata Kottapalli, Michael Heaton, John Tate, Charles Schwab
  • Publication number: 20100176922
    Abstract: A mobile radio frequency identification (RFID) reader system is provided. The RFID reader system includes an RFID reader. The RFID reader system further includes a primary antenna for transmitting RFID signals to acquire RFID information from RFID item tags and a secondary antenna for transmitting RFID signals to acquire RFID information from one of RFID shelf tags and RFID floor tags.
    Type: Application
    Filed: January 12, 2009
    Publication date: July 15, 2010
    Inventors: Paul John Schwab, Matthew Lannon, Robert Schilling
  • Patent number: 7705694
    Abstract: In accordance with principles of the present invention, a two or more pole dielectric resonator circuit is provided with resonators that are elliptical in cross section orthogonal to the longitudinal axis. The resonators are mounted so that they are rotatable about their longitudinal axes, such that the straight line distance between two adjacent resonators measured in a straight line between orthogonal to and intersecting the longitudinal axes of the two resonators is a function of the orientation of the resonators about their longitudinal axes. The resonators can be oriented about their longitudinal axes in any orientation to adjust their spacing, which is directly proportional to their coupling magnitude, which, in turn, is proportional to the bandwidth of the circuit.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: April 27, 2010
    Assignee: Cobham Defense Electronic Systems Corporation
    Inventors: Neil James Craig, Paul John Schwab, Kristi Dhimiter Pance
  • Patent number: 7583164
    Abstract: A dielectric resonator with an air (or other dielectric) gap axially interrupting the body of the resonator and circuits employing such resonators. Preferably, the resonator body is conical or a stepped cylinder. However, the invention also is workable with a straight-sided cylindrical resonator body.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: September 1, 2009
    Inventors: Kristi Dhimiter Pance, Ronald Francis Hebert, Paul John Schwab
  • Patent number: 7352264
    Abstract: In order to permit electronic tuning of the frequency of a circuit including dielectric resonators, such as a dielectric resonator filter, tuning plates are employed adjacent the individual dielectric resonators. The tuning plates comprises two separate conductive portions and an electronically tunable element electrically coupled therebetween. The electronically tunable element can be any electronic component that will permit changing the capacitance between the two separate conductive portions of the tuning plates by altering the current or voltage supplied to the electronically tunable element. Such components include virtually any two or three terminal semiconductor device. However, preferable devices include varactor diodes and PIN diodes.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: April 1, 2008
    Assignee: M/A-COM, Inc.
    Inventors: Paul John Schwab, Kristi Dhimiter Pance, Neil James Craig
  • Publication number: 20070047837
    Abstract: A stereo imaging based vision system and method provides enhanced portal security through stereoscopy. In particular, a system detects non-people objects within the chamber of a revolving door by acquiring two-dimensional (2D) images from different vantage points, and computing a filtered set of three-dimensional (3D) features of the door compartment by using both the acquired 2D images and model 2D images. Applying image processing techniques to the filtered 3D feature set, non-people objects can be detected.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 1, 2007
    Inventors: John Schwab, Sanjay Nichani
  • Publication number: 20050249382
    Abstract: A method and system provides increased levels of security for a mantrap portal by continuously monitoring two zones of the mantrap; a primary zone and a secondary zone. A primary sensor determines that exactly one or zero people are present in the primary zone when requesting access into a secured area. A secondary sensor determines that exactly zero people are present in the secondary zone when access to the secured area is granted. The primary and secondary sensors in combination can detect piggyback events and tailgating events before granting access to a secured area. Further, the primary and secondary sensors in combination can detect the presence of unauthorized persons in a mantrap prior to granting access to the mantrap for exit from a secured area.
    Type: Application
    Filed: May 17, 2005
    Publication date: November 10, 2005
    Applicant: COGNEX TECHNOLOGY AND INVESTMENT CORPORATION
    Inventors: John Schwab, Raymond Fix, Sanjay Nichani
  • Publication number: 20040012092
    Abstract: An integrated circuit including a first signal line disposed on a semiconductor substrate, a second signal line disposed on a first dielectric layer, the first dielectric layer disposed on the semiconductor substrate, a third signal line disposed on a second dielectric layer, the second dielectric layer disposed on the first dielectric layer, and at least two vias connecting the first signal line to the second signal line, wherein the second signal line does not span the region directly beneath the third signal line, and wherein at least a portion of the first signal line extends into the region directly beneath the third signal line.
    Type: Application
    Filed: July 19, 2002
    Publication date: January 22, 2004
    Inventors: Paul John Schwab, Andrew Kenneth Freeston
  • Patent number: 6133805
    Abstract: An apparatus for propagating high frequency energy hag a wavelength of .lambda. in a dielectric medium has first and second signal lines, substantially coplanar with each other, and carrying high frequency energy, A ground trace separates the signal lines and has a plurality of vias, each spaced a distance greater than one quarter .lambda. and less than one half .lambda. apart from another one of the vias.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: October 17, 2000
    Assignee: The Whitaker Corporation
    Inventors: Nitin Jain, John Stephen Atherton, Paul John Schwab, Graham J. H. Wells
  • Patent number: 5917233
    Abstract: A packaged integrated circuit configured for interconnection to an external component comprises a die (1) having a high frequency contact (8), the die (1) being disposed on a lead frame (3). The lead frame (3) comprises a plurality of leads (9). At least two of the leads are first and second RF port leads (9a, 9b) which are electrically connected to the RF port. When mounted to a printed circuit board substrate, there is a capacitor (12) connected between the first and second high frequency contact (8) leads (9a, 9b) to achieve frequency specific signal attenuation at an unwanted frequency with minimal contribution of insertion loss at a desired frequency.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: June 29, 1999
    Assignee: The Whitaker Corporation
    Inventors: David John Fryklund, Paul John Schwab, Graham John Headlem Wells
  • Patent number: 5903177
    Abstract: A control circuit is provided that can be used to compensate for pinch off voltage sensitive circuits. The control circuit comprises a control FET (26) having a gate (27), a drain (29), and a source (28). The control FET source (28) is connected to a tracking potential (23) through control FET source resistor (31) in series with a constant voltage drop element (32). A control voltage input (22) is applied to the control FET drain (29). A current flow through the control FET (26) results in a transfer function that is substantially linear for linear changes in control voltage input below a voltage pinch off value of the control FET (26). As the voltage control output (23) approaches the pinch off voltage value of the control FET (26), smaller changes in control voltage output (23) are realized for the same change in control voltage input (22).
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: May 11, 1999
    Assignee: The Whitaker Corporation
    Inventors: Paul John Schwab, Wayne Mack Struble
  • Patent number: 5806708
    Abstract: A pressure tight travel case for airline passengers for use in the unpressurized baggage compartment of an aircraft, comprising a container having side walls and a bottom defining an opening and a cavity; a first partition removably insertable within the cavity, wherein the first partition includes opposing side edges, a top edge and a bottom edge; and a cover matable with the container to close the cavity, the cover including a sealing device for creating a seal between the cover and the container sufficient to prevent pressurized air within the container from leaking through the sealing device during flight. The travel case further includes guiding grooves for guiding the insertion of the first partition into the cavity, and wherein the opposing side edges of the first partition are formed to matably engage the guiding grooves.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: September 15, 1998
    Inventor: John Schwab
  • Patent number: 4735635
    Abstract: A filtering apparatus for separating particulates from a hot gas stream using hollow, tubular filter elements has a housing with a laterally extending support plate for the filter elements separating the housing into upper and lower sections. The tops of the filter elements are biased against the support plate and the bottoms thereof restrained from lateral movement by restraining rings. Blowback and purge gas systems provide for cleaning of the filter elements and maintenance of the blowback system clear of the solids or condensation products that might form during the separation. The apparatus is especially useful in filtering solids from a hot, corrosive gaseous stream, such as a zirconium tetrachloride process gas stream, where the gas stream contains gaseous constituents that are subject to condensation or solids formation during separation of the particulates and prior to discharge from the filtering apparatus.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: April 5, 1988
    Assignee: Westinghouse Electric Corp.
    Inventors: Gordon A. Israelson, Thomas E. Lippert, John A. Schwab, David F. Ciliberti
  • Patent number: 4717532
    Abstract: An improved pressure control system for a pressurized water nuclear reactor plant contains a novel, two stage sparger in the pressurizer relief tank. The two stage sparger has a primary conduit and secondary conduit, both of which have orifices through the walls thereof, and an interconnecting valve that is responsive to a pressure differential between the two conduits. The secondary conduit is preferably of a diameter less, but with a larger area of flow therefrom, than the primary conduit and is bifurcated, with two leg sections extending back towards the primary conduit.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: January 5, 1988
    Assignee: Westinghouse Electric Corp.
    Inventor: John A. Schwab
  • Patent number: 4057034
    Abstract: A system of heat exchangers for cooling process fluids. The system is particularly applicable to cooling steam generator blowdown fluid in a nuclear plant prior to chemical purification of the fluid in which it minimizes the potential of boiling of the plant cooling water which cools the blowdown fluid.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: November 8, 1977
    Assignee: Westinghouse Electric Corporation
    Inventors: Norman G. Farquhar, John A. Schwab