Patents by Inventor Jacob A. Randmer

Jacob A. Randmer 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).

  • X-ray beam generator
    Patent number: 4107562
    Abstract: An X-ray generator comprising a shielded housing having insulatingly mounted therein an X-ray tube provided with a predetermined focal spot area on a sloped target surface which is radially aligned with an X-ray transmissive window in the housing, the window having a preferred configuration for reducing preferential absorption of X-rays in a divergent beam emanating from the focal spot area of the target.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: August 15, 1978
    Assignee: The Machlett Laboratories, Inc.
    Inventors: Thomas J. Koller, Jacob A. Randmer
  • Circuit interrupting means
    Patent number: 3947797
    Abstract: A circuit interrupting device comprising a vacuum fuse having an evacuated envelope wherein one or more fusible elements electrically connect spaced open ends of aligned tubular electrodes which have respective sealable ends external of the envelope and provide means for facilitating assembly and processing of the fuse.
    Type: Grant
    Filed: June 7, 1974
    Date of Patent: March 30, 1976
    Assignee: The Machlett Laboratories, Inc.
    Inventor: Jacob A. Randmer
  • Dual filament X-Ray tube
    Patent number: 3946261
    Abstract: An X-ray tube including a tubular envelope having therein two cathode filaments operatively disposed in spaced relationship with an anode target surface, one filament being made of a material suitable for low current operation and the other filament being made of a material suitable for high current operation of the X-ray tube.
    Type: Grant
    Filed: January 3, 1975
    Date of Patent: March 23, 1976
    Assignee: The Machlett Laboratories, Inc.
    Inventors: William P. Holland, Capleton I. Swanson, Jacob A. Randmer