Patents Represented by Attorney, Agent or Law Firm Paul W. O'Malley
  • Patent number: 8351616
    Abstract: Differential spacing of loudspeakers in an end fire array is employed to reduce beam spread and, where a ground barrier is present, to suppress any resultant back wave.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 8, 2013
    Inventor: Curtis E. Graber
  • Patent number: 8311261
    Abstract: A loudspeaker system comprises a plurality of speaker transducer units divided among and arrayed in at least three linear arrays. The linear arrays are disposed in a like plurality of elongated rectangular baffles. The elongated rectangular baffles are disposed in side by side relationship along the respective elongated sides of the baffles in the form of a tube. The speaker transducer units are aligned in a plurality of ranks. The ends of the tube are closed with the result that one side of speaker transducers radiates into the interior of the enclosure and the other side radiates into the environment. The speaker transducers of each rank are spaced no further from one another than one quarter wavelength at a selected frequency.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: November 13, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8284063
    Abstract: An apparent motion detector is provided with multiple response levels at differing degrees of sensitivity. The motion detector is based on use of a pyroelectric infrared sensor and conventional circuitry which generates an output signal the strength of which reflects transient temperature changes occurring within a field of view and distinguishable from background heat levels. The detector's response varies with the strength of the signal using a plurality of LED's which emit different colors or are driven at different intensities. The system generally will have a field of view defined by a lens system which is translucent to visible light and transparent to infrared. The lens system doubles as a back screen projection system for display of the indicator light.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: October 9, 2012
    Inventors: Bradford B. Jensen, Kim I. McCavit
  • Patent number: 8248473
    Abstract: A system of remotely locatable sentries or watchtowers operate as part of a network of such sentries or towers for securing a border or perimeter over a wide area. A sensor array, including particularly an array of video cameras, provides for detection, tracking and identification of a target. The sentry or watch towers include non-lethal, sound-based instrumentalities for discouraging entry into and passage through a secured zone of the target.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: August 21, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8223592
    Abstract: An acoustic radiator for underwater application is provided by opposing boundaries mutually spaced and centered on a common axis, a plurality of radial barriers located perpendicular to and connected between the top and bottom boundaries to define a plurality of adjacent radial waveguides, and a plurality of transducers disposed in each radial waveguide, and with one group of transducers being located radially outwardly from another group, the groups being defined in part by all members of the group being the same distance from the apex of the radial waveguide.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: July 17, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8218398
    Abstract: An omni-directional acoustic horn for applications in a liquid transmission medium deploys a plurality of transducers distributed along an interior face of the horn to radiate against an opposed surface. The arrangement mimics operation at a greater depth of submergence to depress development of acoustic cavitation bubbles.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: July 10, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8125715
    Abstract: An EM energy projector incorporates a final stage radiator including a shaped reflecting spike having a forward radiant axis. The shaped spike defines a set of equivalent, discrete input locations, there being a plurality of such locations. The emitters are arranged in a closed line array, and disposed with all of the emitters oriented inwardly toward the forward radiant axis.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: February 28, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8117966
    Abstract: A stun grenade that provides a flash and an associated loud report without use of pyro-ignition sources. The flash is generated by discharge of a conventional flash bulb. The loud, explosive noise comes from rupturing of an inflatable bag at a predetermined rupture pressure and inflation volume.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: February 21, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8111836
    Abstract: A performance venue with a main speaker system is provided having a target coverage area within the performance venue. A performance area is located within the performance venue outside the target coverage area of the main speaker system. A low frequency directed audio source is positioned with respect to the performance area for active cancellation of low frequency sound spilling over into the performance area from the main speaker system. Control of the low frequency directed audio source is effected by an audio sensor is located in the performance area for generating an output correlated with low frequency spill over into the performance area.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: February 7, 2012
    Inventor: Curtis E. Graber
  • Patent number: 8111585
    Abstract: A sonar system includes an objective having reflecting surface(s) with coincident forward radiant axes. Each of the reflecting surfaces defines sets of equivalent acoustic output/receiving locations allowing the use of a plurality of transducers with each reflecting surface. When used in a projection mode, and depending upon the frequency radiated, the sound sources may function as a distributed, functionally continuous sound source. In a passive mode use of a field reflector allows determination of bearings.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: February 7, 2012
    Inventor: Curtis E. Graber
  • Patent number: 7946196
    Abstract: Rotation and positioning of a rotary index table supported from a base is effected using a cam supported from a conveyor and cam follower lock, with the conveyor and cam follower lock being mounted on a carriage set for radial movement on the base inwardly and outwardly with respect to the axis of rotation of the rotary index table, and a plurality of cam followers depending from the rotary index table.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: May 24, 2011
    Assignee: Adaptek Systems, Inc
    Inventors: Joseph G. DePrisco, Michael D. Rudd, Matthew Lawrence
  • Patent number: 7912241
    Abstract: A push-pull magnetic-planar acoustic transducer provides easy field replacement of a diaphragm. Push-pull magnetic-planar acoustic transducers are known for the relative vulnerability of their diaphragms to damage. Replacement of the transducers in the field as been problematic because of the high repulsive force between the front and back panels and the need to obtain even tension across the diaphragm. The push-pull transducer assembly incorporates an edge hinge on which the panels can be pivoted to bring the panels into facing positions and a plurality of set screws to be fitted around the perimeter of the panels allowing essentially flat closure of the panels on one another to a working spacing engaging the diaphragm.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: March 22, 2011
    Inventor: Curtis E. Graber
  • Patent number: 7912234
    Abstract: A broadband sound generator and transmitter provides minimal attenuation of sound over the distance between the generators and a point at a selected distance. The transmission component includes a parabolic dish and a positionable framework for the sound generators. The sound generators are positioned in front of the dish and oriented to direct sound into the dish for reflection toward a target. Drive signal conditioning circuitry apportion components of the drive signal to the several sound generators and adjust the signal in terms of delay and phase to accommodate changes in position of the generators relative to the dish.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: March 22, 2011
    Inventor: Curtis E. Graber
  • Patent number: 7903834
    Abstract: A curve fitted planar loudspeaker minimizes variation and dead zones in the sound field propagated by an array of the loudspeakers. The curve fitted loudspeaker provides a plurality of sound generating transducers. The diaphragm is curved and each adjacent section fits as a section into a larger curve, eliminating or minimizing breaks in the propagated sound filed at the target distance to the target.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: March 8, 2011
    Inventor: Curtis E. Graber
  • Patent number: 7837006
    Abstract: The sound generating and transmitting apparatus is based on a radiator including at least a first, and possibly two or more, shaped reflecting surface(s) having a forward radiant axis. Each of the shaped reflecting surfaces defines sets of equivalent acoustic input locations, with each set being a ring of non-zero circumference centered on the forward radiant axis. The sound source is a distributed, functionally continuous sound source adapted to exploit this feature. In its preferred form the sound source is a sort of closed line array of loudspeakers providing a torodial shaped acoustic source to direct at the hyperbolic cone, the transducers being disposed in a circle with all of the loudspeakers oriented inwardly toward or outwardly from the forward radiant axis.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: November 23, 2010
    Inventor: Curtis E. Graber
  • Patent number: 7828462
    Abstract: A decorative, imitation candle effectively simulates a lighted wick in a darkened environment by location of a light source at the tip of an imitation wick. The light source is provided by an LED located at the tip of the wick for direct viewing in order to obtain maximum brightness and high contrast to an observer in a darkened environment. The light source and its support structure are incorporated into the imitation wick so that they do not detract from the imitation candle's realism when the imitation candle is viewed from the side or from above under higher ambient lighting.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: November 9, 2010
    Inventors: Bradford B. Jensen, Roger D. Bentley, Kim I. McCavit
  • Patent number: 7813516
    Abstract: Front to back linear arrays of loudspeakers provide a sound field compressed both vertical and horizontally with the horizontal directivity patter exhibiting a cardioid shape. The problem addressed is improving the horizontal directivity of linear arrays. A linear array of bass units is placed behind a linear array of mid to high frequency range devices to improve horizontal directivity. The first and second linear arrays are placed back to front, oriented to radiate in a forward direction and spaced by a known distance ā€œdā€. The distance ā€œdā€ may be selected to determine the degree of narrowing of the cardioid pattern sound field generated. Greater directivity is also achieved by adding additional linear arrays of bass units behind the second array. The upper frequency knee of the bass unit arrays must overlap the lower frequency knee of the mid/high-frequency unit array.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: October 12, 2010
    Inventor: Curtis E. Graber
  • Patent number: 7805987
    Abstract: Differential expansion (or contraction) of areas of a tire sidewall is measured by constructing height profiles of the tire at each of at least two different static pressures to detect defects in the tire. Light sources project a plurality of illuminated lines onto a tire and cameras are used to record the position of the lines to construct the height profiles of a rotationally fixed position tire.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: October 5, 2010
    Inventor: Bradley R. Smith
  • Patent number: 7773765
    Abstract: A loudspeaker assembly is described suitable for flown arrays and incorporating a horn load planar or ribbon transducer. Planer acoustic transducers have a relatively limited power output capacity. Addition of a horn suitable for an elongated source effectively amplifies the power output capacity of the planar devices.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: August 10, 2010
    Inventor: Curtis E. Graber
  • Patent number: D625706
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: October 19, 2010
    Inventor: Curtis E. Graber