Patents by Inventor Donald J. Evans

Donald J. Evans 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: 5161681
    Abstract: A safety container for storing and transporting a hypodermic syringe with attached needle, wherein the container is comprised of an elongated transparent plastic tube having a closed end and an oppositely disposed open end. The open end is fitted with a removable lid. The closed end of tube contains a rubbery pad into which the needle point of the syringe is embedded. The resilient, self-sealing rubbery pad frictionally holds the needle and syringe secure, and seals the lumen of the needle to prevent leakage of fluid from the needle or syringe. At least one end of the container has flat edges to prevent rolling of the container when positioned horizontally or when in a moving vehicle.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: November 10, 1992
    Inventors: David R. Kemp, Donald J. Evans
  • Patent number: 4497524
    Abstract: A knock-down furniture assembly comprises substantially identical top frame and bottom frame members. Fasteners are coupled to the top and bottom frame members a side wall member rotatably receives an elongate mating fastener extending substantially from top to bottom thereof. The elongate mating fastener is configured for mating with the respective fasteners of both top and bottom frame members for defining an assembled condition of the furniture assembly. A knock-down drawer assembly comprises an end panel and two complimentary side panels and hinges for hingedly joining the complimentary side panels with the end panel. A preformed drawer guide assembly is also provided for mounting one or more assembled drawer to the assembled frames and sides of the furniture assembly.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: February 5, 1985
    Inventors: Nelson Levings, Jr., Donald J. Evans, deceased, by Stephen G. Evans, administrator
  • Patent number: 4387614
    Abstract: A moving web is divisible into a leader having a first set of registration marks and a trailer having a second set of registration marks. At a transition between the first and second sets of registration marks, a target is applied adjacent the initial mark of the second set. The target is sensed and tracked electronically to a shear. During an order change or a roll-to-roll change within an order, the web is automatically severed transversely by the shear two or more times to chop out a portion of the leader and trailer including the transition between the sets of marks. The leading edge of the trailer is tracked to a station intermediate the shear and the cut-off machine. The cut-off machine knives "crop" cut the trailer at the first registration mark following the leading edge of the trailer and thereafter cut the trailer automatically into blanks in synchronization with the second set of marks.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: June 14, 1983
    Assignee: Molins Machine Company
    Inventor: Donald J. Evans
  • Patent number: 4380943
    Abstract: At a transition between first and second sets of registration marks on a web, a target is applied adjacent the initial mark of the second set. The target is sensed and tracked electronically to a shear station. During an order change or a roll-to-roll change within an order, the web is automatically severed transversely by the shear at the transition between the sets of marks, and the target is tracked to a station intermediate the shear and the cut-off machine. The cut-off machine knives "crop" cut the web at the target and thereafter cut the web automatically in synchronization with the second set of marks. Operation of the cut-off machine knives in the cut-to-mark mode is maintained without loss of synchronization across the transition in the web. Operator intervention is eliminated, and scrap is minimized.
    Type: Grant
    Filed: May 20, 1981
    Date of Patent: April 26, 1983
    Assignee: Molins Machine Company, Inc.
    Inventor: Donald J. Evans
  • Patent number: 4289052
    Abstract: The size of the gap between the leading and trailing portions of a severed web is monitored with respect to an upper limit. The severed web is cut into box blanks which are transported on a stacker conveyor in shingled relation. The speed of the severed web through the corrugator is continuously controlled to prevent the gap from exceeding the limit when the gap reaches the stacker conveyor. Alternatively, the stacker conveyor is temporarily stopped until the size of the gap falls below the limit, and the stacker conveyor is re-started before the gap can close. In either case, the gap control prevents bumping of consecutive box blanks on the stacker conveyor following a change-over of production runs while insuring that the first blank of the new production run shingles on the last blank of the old production run with sufficient tail to insure retention of the first blank by stacker conveyor suction cups or tail grabbers.
    Type: Grant
    Filed: October 5, 1979
    Date of Patent: September 15, 1981
    Assignee: Molins Machine Company, Inc.
    Inventors: A. Brent Woolston, Donald J. Evans
  • Patent number: 4283185
    Abstract: Box blanks produced from a moving web by a paperboard corrugator are shingled on a stacker conveyor. The corrugator includes a shear which severs the web in response to a production run change signal into leading and trailing portions. A cut-off machine cuts the severed web portions into the box blanks. Box blanks cut from the leading portion of the severed web are part of the old production run. Box blanks cut from the trailing portion of the severed web are part of the new production run. The leading edge of the trailing portion of the severed web is tracked to the cut-off machine. The trailing edge of the first full size box blank of the new production run is detected at a first position relative to the stacker conveyor. The trailing edge of the first full size box blank is then tracked to a second position on the stacker conveyor. When the trailing edge of the first full size box blank reaches the second position, a command signal is generated.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: August 11, 1981
    Assignee: Molins Machine Company, Inc.
    Inventors: A. Brent Woolston, Donald J. Evans
  • Patent number: 4254677
    Abstract: A slitter mechanism for slitting elongated webs of material into narrower webs by operative blades on parallel shafts. Inoperative blades are provided in an idle zone on said shafts. The blades in the idle zone are movable out of contact with each other without interfering with the mating relationship of the operative blades.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: March 10, 1981
    Assignee: Molins Machine Company, Inc.
    Inventor: Donald J. Evans
  • Patent number: 4240856
    Abstract: A paperboard web is severed transversely between the double facer machine and the slitter-scorer after the completion of a production order. The speed of the double facer machine is maintained constant while the severed web section is accelerated to a speed substantially above the speed of the double facer machine to create a gap. Adjustments to one or more of the slitter-scorer and cut-off for the next production order are made while the same are in the gap. Sheets cut from the web section are shingled on a shingling conveyor. The speed of the shingling conveyor is accelerated prior to the arrival of the last sheet of the web section and decelerated while the gap is on the shingling conveyor.
    Type: Grant
    Filed: May 5, 1978
    Date of Patent: December 23, 1980
    Assignee: Molins Machine Company, Inc.
    Inventors: Robert H. Craemer, Donald J. Evans
  • Patent number: 4214744
    Abstract: A plurality of sets of aligned rollers are guided for movement along a shingling conveyor. While one set of such rollers is in an operative position snubbing sheets as they are delivered to the shingling conveyor, another set of such rollers is inoperative and can be moved to a ready position for the next production order. The rollers are movable downwardly to a snubbing position and upwardly to an inoperative position.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: July 29, 1980
    Assignee: Molins Machine Company, Inc.
    Inventor: Donald J. Evans
  • Patent number: 4052646
    Abstract: The separate motors of the single facer and double facer machines of a corrugator are controlled in response to separate digital set point signals. Each set point signal is generated by a counter in response to a pulse generator. In a RUN mode, the counter automatically generates a preselected set point signal indicative of a preselected minimum speed and the motor speed is brought up to the preselected minimum speed. The pulse generator and counter are free-running until a digital detector senses the preselected set point signal and inhibits the pulse generator. In FAST and SLOW modes, the pulse generator is selectively steered by the operator to cause the counter to generate selective set point signals indicative of selective set point speeds and the motor speed is varied to the set point speeds.
    Type: Grant
    Filed: February 24, 1976
    Date of Patent: October 4, 1977
    Assignee: Molins Machine Company, Inc.
    Inventors: William A. Massey, Donald J. Evans
  • Patent number: 3977929
    Abstract: The separate machines of a corrugator are coupled so that they can be operated in synchronization. The separate machines are controlled as a unit by use of tachometer feedback signals which eliminate motor speed drift and permit operation at relatively high speed during an order change.
    Type: Grant
    Filed: June 13, 1973
    Date of Patent: August 31, 1976
    Assignee: Molins Machine Company, Inc.
    Inventor: Donald J. Evans
  • Patent number: 3946800
    Abstract: The amount of wrap between a web and a heated drum is varied as a function of web speed by adjusting the position of idler rollers in response to a reference speed signal.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: March 30, 1976
    Assignee: Molins Machine Company, Inc.
    Inventor: Donald J. Evans
  • Patent number: D321472
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: November 12, 1991
    Inventors: Donald J. Evans, David R. Kemp
  • Patent number: D333347
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: February 16, 1993
    Inventors: David R. Kemp, Donald J. Evans