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HIGH ENERGY SCREED FOR A PAVER OR THE LIKE

  • US 3,838,933 A
  • Filed: 11/21/1972
  • Issued: 10/01/1974
  • Est. Priority Date: 11/21/1972
  • Status: Expired due to Term
First Claim
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1. In a vibratory screed assembly for a paver or the like, the improvement comprising:

  • a. a frame;

    b. a screed having leading and trailing portions;

    c. mounting means connecting the trailing portion of the screed with the frame for relative vibratory movement therebetween, said mounting means being defined by spring means which serve as the sole means for transferring draft forces from the frame to the screed;

    d. vibrating means connected to the leading portion of the screed;

    e. said mounting means and said vibrating means cooperating with each other to impart vibratory motion to the screed characterized by;

    1. at least vertical oscillatory movement of the leading portion of the screed;

    2. predominantly horizontal longitudinal movement of the trailing portion of the screed;

    whereby the amount of vertical vibratory movement of the screed progressively decreases from the leading portion to the trailing portion thereof.

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