Patents Assigned to Robert Cohen
  • Article including an endless coil spring
    Patent number: 3966183
    Abstract: An endless coil spring whose convolutions surround a substantially circular line which extends through the hollow interior of the coil spring. This line surrounds inner portions of the convolutions which press against each other. The convolutions have outer portions which surround the line and which are spaced from each other with these outer portions of the convolutions circumferentially offset with respect to the inner portions thereof.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: June 29, 1976
    Assignees: David Dweck, Maurice Zalta, Camel Cohen, Robert Cohen
    Inventor: Salvador Escobar Mayer, Sr.