Patents by Inventor Spencer A. Stone

Spencer A. Stone 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: 4326653
    Abstract: A holder of preferably slightly flexible plastic having oppositely aligned wedging end pieces for clampingly securing a tape cartridge and suitably structured to clamp onto a vehicle sun visor regardless of the size of such visor. A first embodiment includes front and rear clamping ends and a second embodiment includes side clamping ends. Various embodiments are shown for securing the holder to the visor, for connecting modular holders together and for resiliently accommodating cartridges of different thickness dimensions. One embodiment also includes an auxiliary sun screen, as well.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: April 27, 1982
    Inventor: H. Spencer Stone
  • Patent number: 4273277
    Abstract: A holder of slightly flexible plastic having oppositely aligned wedging end pieces for clampingly securing a tape cartridge and suitably structured to clamp onto a vehicle sun visor regardless of the size of such visor. One embodiment also includes an auxiliary sun screen, as well.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: June 16, 1981
    Inventor: H. Spencer Stone
  • Patent number: 4080840
    Abstract: A vibrator device, especially for connecting to a screen element for agitating the screen element, and including rotary shafts with off-center weights so oriented relatively that the agitation of the screen takes the form of vibratory movement thereof in one direction with a stronger impulse being imparted to the screen in one direction than in the other.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: March 28, 1978
    Assignee: The Deister Concentrator Co., Inc.
    Inventor: Spencer A. Stone
  • Patent number: 4033863
    Abstract: Mineral separating apparatus comprises a hydraulic classifier provided with an exterior wall, an open bottom sorting column within said exterior wall, and means for introducing a swirl of hydraulic medium in the sorting column. The exterior wall provides a quiescent zone between the bottom of the sorting column and further has a spigot connected to the quiescent zone for discharge of refuse. A launder section is disposed above said exterior wall and sorting column and is in communication therewith. First and second weirs in said launder section are located on opposite sides, respectively, of said exterior wall. The first weir is higher than the second weir to provide a hydraulic flow gradient therebetween.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: July 5, 1977
    Assignee: Deister Concentrator Company Inc.
    Inventor: Spencer A. Stone
  • Patent number: RE30932
    Abstract: A vibrator device, especially for connecting to a screen element for agitating the screen element, and including rotary shafts with off-center weights so oriented relatively that the agitation of the screen takes the form of vibratory movement thereof in one direction with a stronger impulse being imparted to the screen in one direction than in the other.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: May 18, 1982
    Assignee: The Deister Concentrator Company, Inc.
    Inventor: Spencer A. Stone