Patents by Inventor Daniel D. Alper

Daniel D. Alper 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: 4688512
    Abstract: A back lighted trip indicator for a circuit breaker comprising an opaque tubular shield and a light translucent prism telescopically received in the shield and movable from a position totally within said shield when the manual operator is in the "ON" position to an exposed condition when the manual operator moves to the "OFF" position thereby to reflect ambient light through a frontal face on the prism to back light indicia on the frontal face of the prism.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: August 25, 1987
    Assignee: Mechanical Products, Inc.
    Inventors: Daniel D. Alper, Kenneth C. Bakhaus, Michael H. Estkowski
  • Patent number: 4451027
    Abstract: An improved document feeder employs sets of rollers between which it feeds documents of different lengths to generate and maintain gaps of equal length between the documents while transporting them at a constant speed. A first group of rollers separate stacked documents and start the documents moving at a low speed along the track. A second group of rollers, operated at a higher speed, receive documents from the first group of rollers and increase the speed of the first document relative to a second document, still in contact with the first group of rollers, thereby providing an initial gap which continues to lengthen until the second document reaches the second group of rollers. A third group of rollers receives the documents after they leave the second group, imparting a constant system transport speed to them.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: May 29, 1984
    Assignee: Burroughs Corp.
    Inventor: Daniel D. Alper
  • Patent number: 4209139
    Abstract: A power driven paper take-up mechanism utilizes a single slip drive system and one or more paper rewind coils in an arrangement which allows the single slip drive system to simultaneously apply the appropriate forward driving force to one or more paper rolls.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: June 24, 1980
    Assignee: Burroughs Corporation
    Inventor: Daniel D. Alper