Patents Represented by Attorney Neil B. Schulte
  • Patent number: 4229725
    Abstract: A system to warn an aircraft pilot of a hazardous wind shear condition in which the rate of change of airspeed is compared to the ability of the aircraft to respond thereto. Any difference therebetween that exceeds a predetermined threshold is used to activate a suitable alarm or compensation device. Additional refinements include correcting the inertial speed inputs for vertical components and autopilot induced throttle changes, and correcting the air speed inputs for short term fluctuations.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: October 21, 1980
    Inventor: Richard J. Reilly
  • Patent number: 4221084
    Abstract: An abrasive tool having a base portion with etched metal abrasive thereon and a handle portion adapted to snap onto the base in two alternate positions, one position being tight for using the etched metal abrasive and the other position being raised slightly to accomodate, between the handle and the base, a piece of sandpaper wrapped around the base.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: September 9, 1980
    Assignee: Minnesota Micro Metal, Inc.
    Inventor: John J. Frantzen
  • Patent number: 4204296
    Abstract: A cleaning system for furnaces in which a cleaning fluid such as air is directed through nozzles in the furnace, exiting adjacent curved fluid attachment surfaces. The fluid follows the attachment surfaces and is thereby directed onto and across the dirty surfaces of the furnace to continuously scrub the soot therefrom.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: May 27, 1980
    Inventor: Richard J. Reilly
  • Patent number: 4204503
    Abstract: A cleaning system for furnace walls in which a cleaning fluid such as air is manifolded through numerous small slots in the furnace wall, exiting adjacent the curved surfaces of the heat exchange tubes. The fluid attaches to and follows the curved tube surfaces to continuously scrub the soot therefrom.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: May 27, 1980
    Inventors: Richard J. Reilly, John K. Moorhead
  • Patent number: 4174264
    Abstract: A color television shadow mask is constructed by electroforming metal onto a mask shaped base plate having a suitable resist pattern thereon.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: November 13, 1979
    Assignee: Neil B. Schulte
    Inventor: John J. Frantzen
  • Patent number: 4168233
    Abstract: A system for automatically extracting samples of sludge and mixed liquor from a sewage treatment plant, delivering them to a testing settleometer jar and centrifuge and measuring the rate of settling of sludge and suspended solids in the test samples.
    Type: Grant
    Filed: August 16, 1978
    Date of Patent: September 18, 1979
    Assignee: Watermation, Inc.
    Inventor: James J. Anderson
  • Patent number: 4160420
    Abstract: A schnabel-type railroad car adapted to carry very large loads incorporating articulated end units having a massive hinge at a reduced pivot location so that the weight of the car can be carried at a central location on the trucks while still pivoting about a lesser radius to help negotiate tight turns. Special hydraulic systems permit the car to be raised and lowered and also shifted laterally to provide additional roadbed clearance.
    Type: Grant
    Filed: September 8, 1977
    Date of Patent: July 10, 1979
    Assignee: The Maxson Corporation
    Inventors: Richard W. Hackbarth, Douglas A. Puariea, Philip J. Kramlinger
  • Patent number: 4139740
    Abstract: A circuit for detecting ringing signals on a telephone line in which the alternating voltage oscillations are converted to direct current pulses which are used to charge a first capacitor. Only signals of 14 hertz or above are sufficient to repetitively charge the first capacitor to a high enough voltage to open continuously a grounding circuit through a comparator, thus, allowing a second capacitor to charge up and open a second grounding circuit thus permitting current to flow to a suitable output. The output is used to activate lights on the telephone which lights are either flashed or winked by a unique resistance balanced solid state flash or wink generator.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: February 13, 1979
    Assignee: Magnetic Controls Company
    Inventor: Cordell V. Castleman
  • Patent number: 4137844
    Abstract: A perfector printing press having a full size impression cylinder with a blanket thereon between the perfector roll and the plate roll so that printing is not done on the smaller radius perfector roller. The perfector is easier to reach for cleaning and changing and the quality of the printing is improved. The perfector may be spring loaded to prevent jam ups and pivoted about the impression cylinder for easier access.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: February 6, 1979
    Inventor: Harold E. Paulson
  • Patent number: 4111120
    Abstract: A two color printing press in which the plate cylinder for the second color and the ink supply rollers therefor are mounted in a pivoting frame which can be manually rotated away from the printing press to afford easy access to the interior of the press. Gear position indicators permit prealignment of the second color plate cylinder and rollers when they are swung into position.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: September 5, 1978
    Inventor: Harold E. Paulson
  • Patent number: 4102212
    Abstract: A flat car hand brake system in which a vertical wheel, high powered hand brake is positioned horizontally below the deck to provide load clearance. An adjustable chain takeup system moves the idle portion of the brake chain at exactly the same rate as the loaded or pulled portion of the chain to prevent any slack which would cause fouling.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: July 25, 1978
    Assignee: The Maxson Corporation
    Inventors: Richard W. Hackbarth, Douglas A. Puariea
  • Patent number: 4093901
    Abstract: A DC motor speed control circuit in which the current to the motor is delivered in a series of pulses the width of which is variable in accordance with the setting on a throttle control potentiometer. The pulses are shaped to provide a fast turn on and slow turn off of the control transistor to avoid heat build up and lessen the inductive kickback of the motor. A novel feedback circuit senses excessive current draw and automatically shuts down the circuit and remains latched in that condition until the throttle control potentiometer is reduced to zero whereupon the circuit automatically resets itself. High efficiency is achieved by directing both the power current and the control current through the motor windings thus increasing the battery life.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: June 6, 1978
    Inventor: Ronald N. Rose
  • Patent number: 4087151
    Abstract: An edge connector for a printed circuit card that includes normalling contacts. The connector is designed to make circuit with the printed circuit card before breaking the normalling contacts by having two springable contacts positioned so that the printed circuit card must pass between them and against a first set of contact surfaces before it can reach and separate the normalling or second set of contact surfaces.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: May 2, 1978
    Assignee: Magnetic Controls Company
    Inventors: Lawrence A. Robert, Richard A. Gunderson
  • Patent number: 4082920
    Abstract: An adapter circuit for converting dialing generated tone bursts on a telephone line into DC pulses of a length equal to the tone burst length so that the percent break may be measured. The DC pulse is initiated when the tone burst reaches 50% of its full value and terminated when the tone burst decays to 50% of its full value.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: April 4, 1978
    Assignee: Magnetic Controls Company
    Inventor: Cordell V. Castleman
  • Patent number: 4074204
    Abstract: A fully passive frequency contouring amplifier using segregated passive networks to shape the different portions of the signal thus avoiding all phase distortion and permitting the stages to be coupled without coupling capacitors, thus avoiding distortion caused by the nonlinearities of capacitors. In addition, a special DC servo loop is used to drastically reduce DC amplification.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: February 14, 1978
    Assignee: Van Alstine Audio Systems, Inc.
    Inventors: Gregory W. Broburg, Allen C. Clark
  • Patent number: 4065227
    Abstract: A circuit to maintain the water level between low and high predetermined limits in a sump in which the signal from an upper limit probe operates a first lamp which illuminates a photo resistor controlling the gate of a triac. The triac turns on and enables a second lamp connected to a lower limit probe which illuminates the photo resistor and holds the triac on until the fluid level drops below the lower limit probe.
    Type: Grant
    Filed: August 17, 1976
    Date of Patent: December 27, 1977
    Inventor: Ronald N. Rose
  • Patent number: 4046970
    Abstract: A circuit for detecting ringing signals on a telephone line in which the alternating voltage oscillations are converted to direct current pulses which are used to charge a first capacitor. Only signals of 14 hertz or above are sufficient to repetitively charge the first capacitor to a high enough voltage to open continuously a grounding circuit through a comparator, thus, allowing a second capacitor to charge up and open a second grounding circuit thus permitting current to flow to a suitable output. The output is used to activate lights on the telephone which lights are either flashed or winked by a unique resistance balanced solid state flash or wink generator.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: September 6, 1977
    Assignee: Magnetic Controls Company
    Inventor: Cordell V. Castleman
  • Patent number: 4037913
    Abstract: A miniature telephone jack with a molded housing especially adapted for use on printed circuit boards in which spring metal contacts grasp an inserted plug at the proper locations along its length with balanced, firm forces even though the contacts are all inserted from one side of the housing and have lugs extending therefrom through holes in the other side of the housing to make contact directly with a circuit board. The spring metal contacts include specially designed barbs which fit in slots molded on the sides of the housing to lock them in place.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: July 26, 1977
    Assignee: Magnetic Controls Company
    Inventors: James C. Deitch, Lawrence F. Leistiko
  • Patent number: D246140
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: October 18, 1977
    Assignee: Magnetic Controls Company
    Inventor: Logan W. Johnson
  • Patent number: D246852
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: January 3, 1978
    Assignee: Magnetic Controls Company
    Inventor: James C. Deitch