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Earth screw anchor assembly having enhanced penetrating capability

  • US 5,575,122 A
  • Filed: 11/22/1995
  • Issued: 11/19/1996
  • Est. Priority Date: 11/22/1995
  • Status: Expired due to Term
First Claim
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1. An earth screw anchor assembly, comprising:

  • (a) an elongated hub member having a pair of upper and lower opposite ends axially spaced apart along a central axis;

    (b) a spade member having a longitudinal axis and including an upper portion disposed in said hub member and a lower portion extending downwardly therefrom and from said lower end of said hub member and adapted to cut and penetrate into the earth upon rotation of said assembly about said longitudinal axis; and

    (c) a blade member being helical in shape and extending about and radially outwardly from said hub member, said blade member having a pair of leading and trailing opposite end portions being axially offset from one another along said central axis of said hub member with said leading end portion being disposed on said lower portion of said spade member below said lower end of said hub member and said trailing end portion being disposed on an upper end portion of said hub member above said lower end such that said leading end portion of said blade member will engage and dig into the earth before contact is made with the earth by said lower end of said hub member as said assembly is rotated about said longitudinal axis of said spade member.

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