Patents by Inventor Thomas Eistrat

Thomas Eistrat 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: 4888872
    Abstract: Safely guides wood into the tip of a chain saw bar and provides stability (you don't have to wave the tip of the saw around before you start cutting at the tip), gives support and dampening of vibration and sound, eliminates rotational kickback, the greatest hazard in using the world's most dangerous tool, can be attachable and removable from a saw bar, or a permanent part of the saw bar. Makes a chain saw an additional tool for tree-trimmers, loggers, homeowners in addition to sawing. With device on saw you can push or pull wood from a tangled up pile and safely position it for cutting. Device eliminates cutting in unsteady positions (off-balance, outstretched arms, one-handed, over-reaching). A chain saw with the device provides dynamic tuning to lessen vibration and sound. There is less chain wear, less sharpening, less bar wear, less fatigue, less chance of Reynolds syndrome, no need for a chain brake to stop rotational kickback, no need for a banana type bar.
    Type: Grant
    Filed: September 14, 1988
    Date of Patent: December 26, 1989
    Inventor: Thomas Eistrat
  • Patent number: 4534111
    Abstract: This invention relates to a safer and better power tool for cutting wood. It combines a power driven bar type chain saw and a work positioning means to make the saw also a tool for moving wood to be cut into a better and safer position for cutting before cutting. There are a very large number of chain saw accidents. These accidents are primarily caused by inexperienced operators cutting wood from an unsafe position. They over-reach and otherwise unsafely cut wood primarily because they don't take the time to set their saw down and with their hands move wood to be cut into a safe position before cutting. They haven't had a tool with them to use for safely moving wood before they cut it. The invention herein makes the bar type chain such a tool in addition to being a saw.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: August 13, 1985
    Inventor: Thomas Eistrat
  • Patent number: 4290261
    Abstract: Each wire of bare stranded electrical conductor and wire rope when supported outdoors is constantly sliding and rubbing against each adjacent wire in the stranded article due to temperature changes and wind induced vibrations. If the articles are made non-specular or dulled by abrasive blasting the completely stranded article, abrasive particles are entrapped on the interior wires and may cause premature wear and failure of the article. Articles are made non-specular or dulled without abrasive blasting by electrostatic cloud fogging or other methods that only affect the visible surface of the outer wires in the completely stranded article. Overhead supported stranded articles are made non-specular or dulled to reduce visibility because of public demand.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: September 22, 1981
    Inventor: Thomas Eistrat
  • Patent number: 4288974
    Abstract: Outdoor overhead supported transmission and distribution electrical and communication covered conductor and cable, whether the exterior cover is metal or plastic, is shiny and visible when newly installed in public view. These products may not become significantly dull until after many years of outdoor weathering. Many utilities have had to bury their transmission and distribution lines or building service drops because the public protested seeing them. This invention is for conductors which are inconspicuous and blend into the environment where they are to be used and the public would object if they were conspicuous. The exterior surface of the covers of these linear bodies are dulled or intermittently dulled so that they are not conspicuous and objectionable to the public. Non-specular jacketed light wave conductors are included. Several methods are claimed for these non-specularly dulled or camouflaged products. Cost and service life benefits are indicated for the plastic covered products.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: September 15, 1981
    Inventor: Thomas Eistrat
  • Patent number: 4198807
    Abstract: Wire rope is made non-specular by making the wire for the top layer of wire rope non-specular before the wire is stranded into a wire rope. This method and the product thereof are new to the wire rope art. Such wire rope is not contaminated by detrimental abrasives or other products that would become embedded into the wire rope should it be made non-specular by abrasive blasting or other methods after the wire rope is completely stranded. Wire rope that is not conspicious is preferred in many locations.
    Type: Grant
    Filed: February 14, 1979
    Date of Patent: April 22, 1980
    Inventor: Thomas Eistrat
  • Patent number: 4149367
    Abstract: A method of making environmentally approved power lines without entrapment of abrasive blasting ingredients. Each strand to form the top layer of the bare standed non specular conductor is made non specular before it is twisted thru the closing block on the cable strander so that the completed conductor becomes non specular. The preferred method of non specular finishing each strand for the top layer is by means of abrasive blasting.
    Type: Grant
    Filed: January 16, 1978
    Date of Patent: April 17, 1979
    Inventor: Thomas Eistrat