Patents Represented by Attorney Frederick H. Gribbell
  • Patent number: 7394527
    Abstract: A measuring device is provided with a signal generator and a signal receiver, which is located at a measurable distance from the signal generator. The signal generator is designed for the emission of at least two signal beams covering in given relationship to each other an area and the signal receiver is designed for the time-resolved reception of the signal beams in such a manner that the generator-receiver distance can be determined from the time signature of the signal beam reception.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: July 1, 2008
    Assignee: AndroTec GmbH
    Inventors: Mirko Essling, Michael Kasper, Klaus-Werner Joerg
  • Patent number: 7331406
    Abstract: An improved hand-held fastener driving tool is provided with an adjustable torque limiting control. The tool is portable, and is electrically powered using either a battery pack or a power cord as a power source. The tool drives collated fasteners (e.g., screws) into solid objects. The motor current is measured to determine the amount of torque being applied to a screw by the motor and mechanical drive components. As the screw bottoms out, the motor torque increases to a point where it exceeds the user-adjusted torque limiting control. The motor is automatically turned off at that point, thereby preventing the screw from being stripped.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: February 19, 2008
    Assignee: DuraSpin Products LLC
    Inventors: Mathias Wottreng, Jr., Gary Michael Bohart
  • Patent number: 7323673
    Abstract: A modulated laser light detector that converts laser light energy into electrical signals which exhibit a frequency that is substantially the same as the laser light modulation frequency, in which these signals allow the detector unit to determine a position where the laser light is impacting upon a photodiode array. A superheterodyne receiver circuit is used to provide high gain at an improved signal-to-noise ratio to improve the range at which the modulated laser light signal can be reliably detected. Various types of signal detection circuits are available. Various processing algorithms are disclosed, including a Discrete Fourier Transform with a simplified computational algorithm for use with a low-power processor device.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: January 29, 2008
    Assignee: Apache Technologies, Inc.
    Inventors: DuWain K. Ake, Ayman Hajmousa
  • Patent number: 7267498
    Abstract: An improved sheet printer is provided capable of simultaneously printing both on a “main” surface of a sheet of print media and along edges of that same sheet of print media, such that when the sheets are stacked after being printed, a predetermined image will appear along one or more of the sides of the stack. The “side image” is formed by the dots that have been printed along the edges of the individual sheets. The side image is generated during image processing of the print job, not by a post-processing step of marking or printing against the side of a stack that has already been printed. The printer can form the side images by printing along all four edges of a single piece of the sheet media, and also on one of that sheet's main surfaces, during a single pass through a printing station.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: September 11, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Daniel Paul Cahill, Robert Andrew Kosieniak, David Lee Merrifield
  • Patent number: 7224918
    Abstract: An improved laser printer is provided that keeps its fuser at a standby temperature that is somewhat raised above the ambient temperature, which allows the printer to operate more quickly (to begin printing the first page) when a print job arrives at the printer. The time needed to raise the fuser's temperature is minimized, so that other printer operations become the determining factor in the time to first print parameter. The electrical energy that energizes the fuser is provided in a form that prevents light flicker, by use of AC waveform phase control, or by use of integer half cycle control. The present invention uses closed-loop feedback control, and the type of controller is a PID controller.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: May 29, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Brian Keith Bartley, Douglas Campbell Hamilton, Steven Jeffrey Harris, Kevin Dean Schoedinger, Johnny Ray Sears, Jerry Wayne Smith
  • Patent number: 7202450
    Abstract: A portable induction tool is provided for soldering or brazing sections of metal pipe together. A work coil head (with induction coil) is U-shaped, allowing placement of the head around lengths of pipe, heating a susceptor (e.g., the pipe) to form a joint, and then to be withdrawn after the pipe joint is made. In one form, the tool uses heat pipes to remove thermal energy from the head, and also a heat exchanger for higher-powered units. Power capacitors are generally included with the induction (work) coil to create a tank circuit of a resonant frequency. The induction coil uses Litz wire, copper tubing, or heat pipes with a conductive outer skin to carry the high-current being delivered to the induction coil. The induction coil has a general racetrack configuration, which is typically wound in a U-shape (or as a semicircle) as a single winding, with multiple turns.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: April 10, 2007
    Assignee: Nexicor LLC
    Inventors: John P. Barber, Robert C. Cravens, II, Antonios Challita
  • Patent number: 7193503
    Abstract: An improved electronic lock system is provided for use with real estate lock boxes. Each user has an identification card with a non-volatile secure memory for exchanging data with the lock box, and for exchanging data with a central computer. The user first inserts the card into a connector at the lock box, or at the central computer. The lock box or central computer must first enable (or unlock) the data in the card memory, and then can read the data stored in that card's memory and record this information in lock box memory. The card must then identify itself, and the user must identify himself/herself to the lock box or central computer. After the identification information is authenticated, the user can enter commands to the lock box; e.g., an access code is manually keyed into the lock box keypad by the user to obtain access to a secure compartment.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: March 20, 2007
    Assignee: Sentrilock, Inc.
    Inventor: Scott R. Fisher
  • Patent number: 7190490
    Abstract: A printer that stores a minimal number of unadjusted stochastic threshold arrays in non-volatile memory, in which the unadjusted threshold arrays are used to generate adjusted threshold arrays at run time by use of special parameterized transfer functions. The unadjusted array for a particular color is stored in the printer's ROM and preferably is stored in a packed configuration to save memory space. The parameterized transfer functions are used to convert the unadjusted threshold data into adjusted threshold data for each color and type of print media. These parameterized transfer functions are stored in the printer's non-volatile memory, and take up very little memory space. In a preferred embodiment, the unadjusted threshold array comprises a 128 row by 128 column sized array, and each element of this array comprises a 10-bit number. When a parameterized transfer function is applied to this unadjusted array, the resulting numeric values for the adjusted array elements are produced as 8-bit numeric values.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: March 13, 2007
    Assignee: Lexmark International, Inc.
    Inventors: Brian Edward Cooper, Brian Wesley Damon, Paul Athanasius Robinson, Thomas Campbell Wade
  • Patent number: 7187400
    Abstract: A bi-directional electrophotographic raster imaging system that sweeps a modulated light beam across an imaging region of a photosensitive surface to create both forward-going and reverse-going scanlines of dot data on the imaging region, and which compensates for image misalignment that may be caused by varying the power used to drive a laser light source that generates the modulated light beam. An SOS photosensor detects the beginning of each scanline in both forward and reverse directions, outputting an SOS signal used to create both forward and reverse margins. When the laser power is varied, compensating data is used to correct the forward and reverse margins to keep them aligned (straight), even though the beginning of the scanline locations for both forward and reverse scans are affected in opposite directions by an increase or decrease in laser power.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: March 6, 2007
    Assignee: Lexmark International, Inc.
    Inventor: Craig Palmer Bush
  • Patent number: 7132662
    Abstract: A flexible scintillation-type level detector (10), in which the scintillator (18) is made from a flexible tube (12) substantially filled with a liquid scintillating material (16) to provide flexibility in at least two, and preferably three, dimensions. At least one end (32) is aligned for operable connection to a photodetector (14, 20). Outer surfaces of the flexible tube (12) may be covered with an inwardly-facing light reflective material (30) and/or light-excluding material or flexible armored casing(22). The scintillator (18) may include a variable-volume expansion chamber (110, 152, 176) to compensate for thermal expansion and contraction of the liquid scintillator material (16).
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: November 7, 2006
    Assignee: Ronan Engineering Company
    Inventors: Charles E. Baldwin, Craig Carls
  • Patent number: 7133604
    Abstract: An air heater is provided for use in buildings or other structures. The air heater uses infrared lamps to generate a temperature rise in a forced air chamber that contains several infrared lamps, in which two ends of the chamber act as an inlet and an outlet, and in which the chamber has a highly reflective interior surface that reflects the light being emitted by the lamps to multiply the thermal effect of the infrared light sources. An alternative embodiment uses a closed chamber, in which the temperature rise causes the unit to act as a detonator.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: November 7, 2006
    Inventor: David M. Bergstein
  • Patent number: 7110092
    Abstract: A measuring device is provided with a signal generator and a signal receiver, which is located at a measurable distance from the signal generator. The signal generator is designed for the emission of at least two signal beams covering in given relationship to each other an area and the signal receiver is designed for the time-resolved reception of the signal beams in such a manner that the generator-receiver distance can be determined from the time signature of the signal beam reception.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: September 19, 2006
    Inventors: Michael Kasper, Mirko Essling, Klaus-Werner Jörg
  • Patent number: 7086258
    Abstract: An electronic lock box contains a secure compartment for storing keys to a structure. A linear actuator moves in one direction opening the door to the secure compartment, and moves in the opposite direction releasing a shackle that holds the lock box to the structure. A lock box system uses an encryption algorithm to diversify user PIN data at a central computer, and stores that diversified information on a memory card for later use when the user attempts to access a lock box. The central computer and electronic lock box both keep track of system “epoch time,” and the memory card must be presented to the electronic lock box within a correct epoch time window for the diversified PIN data to be successfully decrypted and compared to the user's PIN data that is entered on a keypad of the electronic lock box.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: August 8, 2006
    Assignee: Sentrilock, Inc.
    Inventors: Scott R Fisher, William George Noack, Bret William Smith, Randolph C. Stewart
  • Patent number: 7082857
    Abstract: A portable hand-held screw driving tool is provided for use with collated strips of screws. A collated strip of screws enters from an upper-rear area of the tool and runs through a pathway or slot in an elongated, movable upper guide mounted at the tool's upper housing, then to a movable slide body having that receives and indexes the collated strip so a screw can be driven by the tool. The upper guide provides containment that prevents the flexible collated strip becoming substantially misaligned while moving through the guide's slot. When the tool is actuated to drive a screw into an object, the sliding guide moves longitudinally along the top of the tool, along with the tool's front-end screw-driving mechanism. Thus the flexible collated strip is always in a relatively fixed orientation as compared to the movable front end portion of the tool.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: August 1, 2006
    Assignee: Senco Products, Inc.
    Inventor: William H. Hoffman
  • Patent number: 7032482
    Abstract: A portable hand-held screw driving tool is provided for use with collated strips of screws. A collated strip of screws enters from the “bottom” area of the tool and runs through a fixed guide along a front area of the tool's handle, and then to a movable slide body having a rotatable sprocket that receives the collated strip, and indexes the strip so a screw can be driven by the tool. Between the slide body and the fixed guide is a flexible strap with a bracket that places tension on the collated screw strip, which prevents the flexible collated strip from becoming substantially misaligned (e.g., bunching, sagging, or becoming tangled) in the area between the fixed guide and the slide body. The collated strip is kept sufficiently taut, regardless of the orientation of the screw driving tool with respect to the ground.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: April 25, 2006
    Assignee: Senco Products, Inc.
    Inventor: William H. Hoffman
  • Patent number: 7012237
    Abstract: A modulated laser light detector that converts laser light energy into electrical signals which exhibit a frequency that is substantially the same as the laser light modulation frequency, in which these signals allow the detector unit to determine a position where the laser light is impacting upon a photodiode array. A synchronous rectifier circuit is provided which, by use of a phase locked loop, converts a full-wave analog signal representative of the modulated laser energy into a half-wave analog signal, which is filtered and demodulated to generate a DC level that is indicative of the strength of the received laser light energy. At least two channels of these signals are used to determine the impacting position of the laser light energy.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: March 14, 2006
    Assignee: Apache Technologies, Inc.
    Inventor: DuWain K. Ake
  • Patent number: 7012390
    Abstract: An improved variable speed fan controller for use in devices such as laser printers. The controller automatically adjusts its output signal to fans such that a fan quickly settles into an appropriate operating speed, even if the fan has been newly installed into the equipment. The controller can store values in non-volatile memory, if desired, to keep track of recent changes in the fan's operating parameters and corresponding control signal values. The controller is able to control relatively inexpensive fans that don't necessarily operate at a predictable fan rotating speed under repeatable conditions and control signals, by controlling the fan to an initial or predetermined rotating speed; if the fan isn't running within a suitable range of rotational speeds, then determining whether a fine or coarse adjustment should be made to the fan's rotational speed. The controller makes appropriate adjustments until the fan's rotational speed is within acceptable operating tolerances.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: March 14, 2006
    Assignee: Lexmark International, Inc.
    Inventors: Douglas Anthony Able, David Herman Alverson, Danny Keith Chapman, David Ross Cutts, Jr., Brian Michael Jacobs, Matthew David Miles, Michael Todd Phillips, Benjamin Kyle Shepherd, Mark Stephen Underwood, Marshall Lee White
  • Patent number: 7009489
    Abstract: An improved electronic lock system is provided for use with real estate lock boxes where there is the need for many people to access the secured compartment of the lock box in a controlled manner. Each user has an identification card with a non-volatile secure memory (known as a “smart card”), for exchanging data with the lock box, and with a portable computer capable of reading data from the smart card; or a cell phone can be used to gain access information from a central computer. The user first inserts the smart card into the connector attached to the lock box; the lock box reads the user's ID stored in the smart card memory and records this information in lock box memory. The lock box then transfers its access code information and other data to the smart card for further processing. The user then inserts the smart card in a portable card reader to learn the access code, or calls a central computer via a mobile phone system and interacts with the computer to elicit the necessary access code information.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 7, 2006
    Assignee: SentriLock, Inc.
    Inventor: Scott R. Fisher
  • Patent number: 6989732
    Abstract: An improved electronic lock system is provided for use with real estate lock boxes where there is the need for many people to access the secured compartment of the lock box in a controlled manner. Each user has an identification card with a non-volatile secure memory (known as a “smart card”), for exchanging data with the lock box, and with a portable computer capable of reading data from the smart card; or a cell phone can be used to gain access information from a central computer. The user first inserts the smart card into the connector attached to the lock box; the lock box reads the user's ID stored in the smart card memory and records this information in lock box memory. The lock box then transfers its access code information and other data to the smart card for further processing. The user then inserts the smart card in a portable card reader to learn the access code, or calls a central computer via a mobile phone system and interacts with the computer to elicit the necessary access code information.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: January 24, 2006
    Assignee: SentriLock, Inc.
    Inventor: Scott R. Fisher
  • Patent number: D565469
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: April 1, 2008
    Inventor: Thomas W. Young