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LAWN RAKE AND CROSS HEAD ASSEMBLY


U.S. PATENT 6,131,381

Issued: October 17, 2000



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OBJECTS of the INVENTION



  • It is thus an object of this invention to provide a lawn rake having a cross head assembly with individual plastic tines.
  • It is therefore an object of this invention to provide a lawn rake having a cross head assembly with plastic tines that are individually installable, individually removable, individually replaceable, and that require only the force of a finger to remove and install.
  • It is also an object of this invention to provide a cross head assembly constructed of plastic materials, except for fasteners.
  • It is yet another object of this invention to provide a lawn rake with tines that are self-releasing under predetermined loading conditions during raking action.
  • It is also an object of this invention to provide a cross head assembly with apertures that loosely position tines on the cross arm.
  • It is a further object of this invention to attach individual tines to a cross arm in a manner that is not rigidly secured, and that is not fixed.
  • It is an additional object of this invention to provide tines that have freedom of movement on the cross arm, thereby minimizing stresses in the tines during raking action.
  • It is still another object of this invention to provide a lawn rake that is lightweight, simple to manufacture, durable, and inexpensive.
  • It is still another object of this invention to provide a cross head assembly with a structurally efficient cross arm in the form of a closed tube.
  • It is nevertheless another object of this invention to allow tines freedom of movement to align with the direction of raking motion of the lawn rake.
  • It is therefore another object of this invention to pivotally mount tines on the cross arm of a cross head assembly.
  • It is yet another object of the invention to make use of readily available components to manufacture a lawn rake, thereby minimizing custom tooling and machining.
  • It is yet another object of this invention to make use of readily available thermoplastic components to manufacture a cross head assembly.
  • It is also an object of this invention to provide a lawn rake with individual tines having a circular cross section and made from a thermoplastic material.
  • It is also another object of this invention to provide a new and novel rake that includes a cross head assembly.
  • It is another object of this invention to provide a lawn rake that requires a minimal amount of space for storage, shipment, and transport.
  • It is also an object of this invention to provide a lawn rake that can be disassembled into separate components of handle, cross head and tines.
  • It is an additional object of this invention to provide plastic tines on a lawn rake that snap into place to retain themselves on the cross arm.
  • It is another object of this invention to provide a cross head assembly with tines having a looped bend that serves to engage the outside surface of the cross arm to install and retain a tine on the cross arm.
  • It is nevertheless another object of this invention to provide a lawn rake including a cross head assembly, that can be distributed and sold in kit form.
  • It is still a further object of this invention to provide a lawn rake that is easier to use and more efficient in the movement of leaves and lawn debris.
  • It is a further object of this invention to provide a lawn rake with a cross head assembly that can be used in a push mode for moving piles of leaves as well as pull mode for raking leaves.
  • It is still another object of this invention to manufacture the components of a lawn rake having a cross head assembly, except for fasteners, from the thermoplastic material polyvinylchloride.
  • It is thus another object of this invention to provide a lawn rake that can be utilized with sideways motion, swirling motion, or circular motion, or any motion having a component of movement parallel to the head of the rake.

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