Patents by Inventor David Prusman

David Prusman 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: 4729750
    Abstract: A flying toy controllable in three dimensions. A gas inflatable envelope preferably a helium filled balloon is secured to a remote controlled first motor with a normally vertical output shaft having a first propeller. The output shaft is tiltable such that it assumes a plurality of angular positions in a vertical plane. A second remote controlled motor with output shaft and associated propeller is also secured to the balloon and when activated rotates the toy about its vertical axis. The two motors and the mechanism for tilting the output shaft of the first motor provide a flying toy controllable in three dimensions. Substantially, all of the buoyancy of the balloon is provided by the lighter-than-air gas of the balloon.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: March 8, 1988
    Inventor: David Prusman
  • Patent number: 4710149
    Abstract: A remote controlled toy vehicle carrying a self-contained bridge. When the toy vehicle approaches a road hazard, for example, a water hazard, the vehicle is stopped and the bridge, carried by the toy vehicle, is caused to be flipped over the vehicle from its vehicle trailing position, the position for transporting vehicle and bridge, to a position in front of the toy vehicle, the position for use of the bridge by the vehicle. Then, the toy vehicle is allowed to cross the bridge and the road hazard. The movement of the toy vehicle up and over the bridge causes the bridge to automatically return to its vehicle trailing position and the vehicle and bridge are again able to be moved about, as desired. In the preferred embodiment, the self-contained bridge is attached to the toy vehicle by a pair of telescopic support tubes. A remote controlled motor causes the support tubes, pivotably supporting the bridge, to flip over the vehicle, as desired.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: December 1, 1987
    Inventor: David Prusman
  • Patent number: 4662073
    Abstract: An infinitely variable drawing instrument for producing unlimited varieties of fanciful designs. The designs produced by the drawing instrument are of the repeated individual line type yet indexed around the circumference of a circle. After the various apparatus variables are set by the operator and a piece of paper is located on a drawing platen, the drawing tool or pen nib, located at the end of a drawing bar connected to the driving wheel is placed on the paper and the operator merely rotates the driving wheel by grasping a handle. The simple manual rotation of the driving wheel causes the drawing platen to rotate and, in addition, causes the drawing tool or pen nib to move and thereby draw the fanciful design on the paper. Thus, repeated lines, indexed on a circle, produce unlimited drawing designs. A guiding template and/or an intermediate bar can also be connected between the driving wheel and the drawing bar which provide additional variables for adjustment for making additional drawing designs.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: May 5, 1987
    Inventor: David Prusman