Patents by Inventor Lester S. Krulwich

Lester S. Krulwich 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: 4265624
    Abstract: A magnetic tracing stand capable of being illuminated by various sources of battery operated lights, such as flashlights, lanterns, and by household light fixtures, consisting of a magnetically attractable surfaced base, a rigid, adjustably angled transparent sheet that is removably and reversibly fastened to the front of the base leaving open space over a major portion of the base, with magnetic and fastening means, to accommodate and utilize various sources of light.
    Type: Grant
    Filed: January 15, 1980
    Date of Patent: May 5, 1981
    Inventor: Lester S. Krulwich
  • Patent number: 4237518
    Abstract: A nonelectric magnetizer and demagnetizer in the form of three flexible permanent magnets, approximately crescent U shaped, each having only one same magnetic pole on its main curved in surface and the opposite magnetic poles on their main curved out surfaces, with two of the flexible permanent magnets pliably mounted on one backing, having their curved in surfaces angularly facing each other, and the other magnet mounted on a separate backing manually movable so that the three magnets can form an adjustable air gap from substantially all directions within which a workpiece can be inserted and withdrawn to be magnetized, and the curved outside of the single magnet capable of demagnetizing various workpieces.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: December 2, 1980
    Inventor: Lester S. Krulwich
  • Patent number: 4232460
    Abstract: A magnetic press and refresher for clothes in the form of a flat central member, preferably rectangular, containing magnetic tapes attached adjacent to its longitudinal edges on both surfaces with backings similarly sized having magnetically attractable strips on the longitudinal sides of one surface aligned with the magnetic tapes on the central member. The backings may consist of transparent material and said strips are capable of being raised from or lowered to the surface of the backings. Clothing moistened, optionally with a slight solution of mild cleaning material, is set on the central member between the magnetic tapes or on a backing or both backings between the strips. The central member and backing or backings are then joined together by the tapes magnetically adhering to the strips and afterwards separated.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: November 11, 1980
    Inventor: Lester S. Krulwich
  • Patent number: 4221164
    Abstract: A stamp pad applicator consisting of an oblong plate with a plurality of openings into which an applicator handle may be inserted. Removably attached under the plate are a plurality of sections together matching the oblong plate. Midway in each section an opening is aligned with the oblong plate openings. A magnet is attached to the bottom of the applicator handle. A magnetically attractable flat plate is fastened to the outside of each section and removably attachable on the flat plates are portions of flexible magnetic rubber tape capable of being cut into various shapes by scissors or knife. The magnet on the handle, by insertion in an oblong and section opening, magnetically engages the back of a flat plate and pushes that section partially out for stamping. Another magnet is optionally fastened in each section opening against each flat plate with this magnet and the magnet on the handle having the same magnetic pole facing each other thereby repelling the section forward when the handle is inserted.
    Type: Grant
    Filed: August 29, 1978
    Date of Patent: September 9, 1980
    Inventor: Lester S. Krulwich
  • Patent number: 4179105
    Abstract: A magnetic press for metal and woodworking vises in the form of a projection extending from but unattached to a flat plate to which magnetic tape is attached enabling the flat plate to adhere removably to a vise jaw. The flat plate contains magnets that repel other magnets fastened to a rigid plate that is attached to the projection with limited freedom of movement. The projection is provided with different caps and a base. When the vise jaws are drawn towards each other the repelling magnets are compressed exerting additional pressure on a workpiece by the projection. The workpiece is mounted on a small platform capable of magnetically adhering to the opposite jaw and sliding back when on the forward end of the projection.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: December 18, 1979
    Inventor: Lester S. Krulwich
  • Patent number: 4024662
    Abstract: A copyholder and line follower in the form of a backing with a manually movable rod having magnetic end members and adjustable magnetically attractable side facings on elongated extensions with channels. The backing is provided with an adjustable easel and a top clamp with a magnetic spring or opposite and repelling poles.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: May 24, 1977
    Inventor: Lester S. Krulwich
  • Patent number: 3963159
    Abstract: A jig in the form of two fairly rigid plates, with clips, of magnetically attractable material positioned next to each other with two of their side front edges adjacent and the rear portions of said sides cut away. The forward part of said adjacent edges are optionally bent slightly upwards. The bottom of each plate, towards the front, is attached to an extension piece by a hinge and the bottom of said extension piece contains a strip extending longitudinally behind the plates with a magnet at each end spaced so that they magneticallly attract, without contacting, the plates when the clips hold a sheet of glass and the plates are about horizontally extended. The extension piece is provided with a front section on which an elongated bar is adjustably attached, said bar having a slot to guide a glass cutting tool and extending forward over said adjacent edges of the plates.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: June 15, 1976
    Inventor: Lester S. Krulwich