Patents Represented by Law Firm Patnaude, Videbeck & Marsh
  • Patent number: 5954646
    Abstract: A probe for a tonometer has a tubular shaft at the forward end of which is a tubular portion for receiving a membrane. The membrane has a tubular portion and a transverse portion across one end thereof such that the open end of the tubular portion can fit around the forward end of the shaft.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: September 21, 1999
    Assignee: CDS Technologies, L.L.C.
    Inventors: George James Jost, Joseph R. Dal Santo
  • Patent number: 5917064
    Abstract: A tube type hot gas filter having a ceramic tube sheet supporting a plurality of tubular filter elements in a filter chamber includes an annular heating chamber surrounding the edge of said tube sheet and through which hot gas from the downstream side of the tube sheet passes as it exits the filter.
    Type: Grant
    Filed: January 2, 1996
    Date of Patent: June 29, 1999
    Assignee: Industrial Filter & Pump Mfg. Co.
    Inventor: David Stanislaw
  • Patent number: 5848161
    Abstract: In a networked communications system comprising a client unit, a secured host server, and a company subscriber unit, a method for providing secured commercial transactions via the networked communications system.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: December 8, 1998
    Inventors: Greg Luneau, Jason Remillard, Thomas King
  • Patent number: 5845547
    Abstract: An excavating tool has a tungsten carbide insert which is more wear resistant and not subject to breakage because of being too brittle. The insert has a semispherical tip, a divergent midsection and a base with a conical rear surface. The insert is made with tungsten carbide particles sized between 1 and 8 microns and averaging between 2 and 5 microns, blended with particles of a binder of which the binder comprises 5.5 to 6.5 percent of the blend by weight, and the insert is sintered to a hardness of 89.5 R.sub.a or more.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: December 8, 1998
    Assignee: The Sollami Company
    Inventor: Phillip A. Sollami
  • Patent number: 5844390
    Abstract: A fluid operated machine is monitored and regulated by providing a logic with a memory for storing the timings of properly operating functions, and detectors the outputs of which are used to calculate the actual operating timings of the functions. The actual operating timings are compared to the timings in the memory, and if they deviate beyond acceptable tolerances a warning signal is given. In addition to monitoring the timings, the device will also open or close control flow valves to bring the operating speeds of functions within acceptable tolerances.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: December 1, 1998
    Inventor: Robert Cameron
  • Patent number: 5823635
    Abstract: Brackets are fitted on the inner surface of a wheel cover to attach the wheel cover to a wheel having a plurality of hand holes. Each of the brackets has at least one finger adapted to fit through a hand hole on a wheel and extend behind the web of the wheel. The brackets are adjustable between a first condition in which the finger is movable with respect to the wheel cover, and a second condition in which the finger of the bracket is locked behind the web of a wheel.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: October 20, 1998
    Inventor: John G. Polka
  • Patent number: 5823255
    Abstract: A machine for cutting a length of pipe has a body with cross-sectional dimensions which are less than the inner diameter of the pipe to be cut. The machine has a plurality of legs which extend radially from the body such that the machine can be fitted within a length of pipe and locked in position by moving the legs radially outward. The machine further has a rotating tool for cutting the inner wall of the length of pipe.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: October 20, 1998
    Assignee: The E. H. Wachs Company
    Inventors: Jeffrey Swiatowy, Scott Ferrar
  • Patent number: 5822980
    Abstract: A device for removing molecular pollutants from exhaust gasses has a cylindrical chamber and a rotating probe extending axially through the length of the chamber. A spark pin projects from the outer surface of the probe, and a train of high voltage electric pulses is applied across a cylindrical contact around the inner wall of the chamber and the spark pin. The train of high voltage pulses cause a pattern of sparks to form in the chamber which reduce molecular pollutants to non polluting compounds.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: October 20, 1998
    Inventor: Jack Chen
  • Patent number: 5814996
    Abstract: The noise received by the unused connectors limits the accuracy of a device for measuring the leakage from a piece of electronic medical equipment. To reduce noise the device is surrounded by a Faraday shield which encloses unused connectors of the device. The shielded connector includes a post having a transverse hole near its distal end. A coil spring surrounds the post end and is connected to the Faraday shield of the device. An insulated retainer prevents the distal end of the coil spring from extending beyond the end of the post. The retainer is compressed against the coil spring to expose the transverse hole when a lead is to be attached to the connector.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: September 29, 1998
    Assignee: Bowden's Automated Products, Inc.
    Inventor: Robert A. Winter
  • Patent number: 5808196
    Abstract: A fluid flow meter has a housing within which inlet and outlet displacement rotors flank a blocking rotor. The end plates of the housing rotatably support all three rotors which rotate in a timed sequence in response to the passage of fluid through the meter. The cylindrical blocking rotor has a pair of disk-shaped endwalls joined by a rectangular, centrally-positioned web, and a pair of arcuate sidewalls which, with the endwalls and web define a pair of rotor cavities. Recesses in the housing end plates fit the blocking rotor endwalls and provide an added fluid seal. Use of the rotor endwalls makes it possible to manufacture the blocking rotor with a smaller diameter and thinner body portions, saving weight and rotational mass.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: September 15, 1998
    Assignee: Liquid Controls L.L.C.
    Inventor: William J. Kolb, III
  • Patent number: 5799738
    Abstract: A doweling hole drilling machine includes a vehicle such as a tractor having a frame pivotally mounted to the side of the tractor. The frame is moveable around an axis parallel to the longitudinal axis of the vehicle from a first horizontal orientation to a second vertical orientation, and the raising or lowering of the frame is powered by hydraulic cylinders. Positioned on the frame are a plurality of parallel mounted spaced drilling machines, each of which is positioned for drilling a hole perpendicular to the longitudinal axis of the vehicle. Each of the drilling machines is mounted on a drive assembly for moving the machine axially to thereby force a drill bit in the machine to drill a hole. The frame is also laterally adjustable in a horizontal direction perpendicular to the longitudinal axis of the tractor and the lateral adjustment is also hydraulically powered.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: September 1, 1998
    Inventor: Paul Kromray, Jr.
  • Patent number: 5794949
    Abstract: A collet for retaining a work piece comprises a plurality of wedge segments, and each of the wedge segments has inner and outer surfaces which, when the segments are assembled, form a collet having a cylindrical bore and a frustonconical outer surface, and the segments are retained in aligned relationship within a nut attachable to the machine.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: August 18, 1998
    Assignee: The E. H. Wachs Company
    Inventor: Kenneth R. Pierce
  • Patent number: 5795027
    Abstract: Blanks of stiff material such as corrugated cardboard are foldable to form an ottoman and an arm chair.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: August 18, 1998
    Assignee: NEWance, Inc.
    Inventors: John R. Howard, Robert W. Machacek
  • Patent number: 5766290
    Abstract: An improved cross flow ceramic filter is disclosed for utilization in high temperature, high pressure applications such as found in hot gas cleaning in coal based power generation. The cross flow ceramic filter of the present invention includes a plurality of identical corrugated sheets composed of chopped ceramic fiber matrix material and a plurality of predetermined sized end blocks shaped to fill the cross section passageways formed between the partly spaced corrugations of adjacent sheets of the filter material. One advantage of the corrugated sheet cross flow filter of the present invention is that the filter may be shipped to its site in semi-cured form unassembled. When the filter is received on site, the corrugated sheets are partially separated from each other until passageways of the desired dimension are achieved. Thereafter, the end blocks and glue may be applied between the blocks and the ends of the corrugated sheets and between the apexes of the corrugations where the corrugated sheets overlap.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: June 16, 1998
    Assignees: Universal Porosics, Inc., Industrial Filter & Pump Mfg. Co.
    Inventors: James F. Zievers, Paul Eggerstedt, Elizabeth C. Zievers
  • Patent number: 5761241
    Abstract: The jitter of a serial digital signal is measured by determining a recurrent time window and generating a measurement ramp for each window for which the amplitude of the ramp grows proportional to the positive transition of the digital signal. The amplitude of the ramps at the end of each recurrence of the time windows is converted to digital valves and the digital values are used to calculate jitter.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: June 2, 1998
    Inventor: Bruno Jean-Marie Martin
  • Patent number: 5730478
    Abstract: Method and apparatus for mounting a push/pull handle on a latch mechanism is disclosed. Recently, it has become desirable for large medical service facilities, such as hospitals, to change their door latch mechanisms from rotatable lever handles to push/pull handles. The apparatus comprises a pair of mating adapter plates mountable on either side of a door outwardly adjacent a mortise lock presently mounted in the door. The adapter plates include a plurality of pairs of aligned apertures, each of the several pairs of which are adapted to align with a pair of apertures which differing lock manufacturers position in differing radial and arcuate positions with respect to a mortise operating key. The adapter plates fasten through the mortise to the respective door sides and allow push/pull type handle assemblies to be mounted on the adapter plates so as to be operatively connected through the mortise operating key.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: March 24, 1998
    Assignee: Architectural Builders Hardware Manufacturing, Inc.
    Inventor: Richard E. D'Hooge
  • Patent number: 5717338
    Abstract: A method and apparatus for testing flyback transformers counts the number of cycles of a decaying ringing signal generated in a resonant circuit including the secondary winding of the flyback transformer beginning with the second cycle and ending with the cycle where the amplitude of the ringing signal falls below twenty-five percent of the amplitude of the second cycle of the ringing signal.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: February 10, 1998
    Assignee: Sencore, Inc.
    Inventor: Terry D. Cook
  • Patent number: 5711265
    Abstract: An improved drive mechanism for rotary valves of the type used in internal combustion engines indexes the valves in selected attitudes of rotation to align the valve passage with an inlet or exhaust port and hold the valve in alignment for a selectable duration of crankshaft rotation. In like fashion, the valves are also indexed to close off an inlet or exhaust port for a selected duration of crankshaft rotation. Flow into and out of an engine cylinder is improved because each valve is held for a longer period of time in a full open position. while compression and power strokes are made more efficient by the gas seal maintained while the valves are positioned to close off the intake and exhaust ports.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: January 27, 1998
    Inventor: Donald A. Duve
  • Patent number: D402431
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: December 8, 1998
    Inventor: Mark S. Peterson
  • Patent number: D405266
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: February 9, 1999
    Assignee: Kingport International Corporation
    Inventor: Claudia J. Chisholm