Tree and shrub lifting system

• US 5,496,143 A
• Filed: 04/11/1994
• Issued: 03/05/1996
• Est. Priority Date: 04/11/1994
• Status: Expired due to Term

• Current Assignee: Stephen R. Breyer
• Original Assignee: Stephen R. Breyer
• Inventors: Breyer, Stephen R.
• Primary Examiner(s): Focarino, Margaret A.
• Assistant Examiner(s): Brahan, Thomas J.
• Application Number:
  US08/225,642
• Time in Patent Office: 694 Days
• Field of Search: 414/23, 414/24.5, 294/82.13
• US Class Current: 414/23
• CPC Class Codes: A01G 23/043 Transplanting devices for grasping, undercutting or transporting the root ball A01G23/046 takes precedence

Abstract

A set of lifting hooks for lifting a tree or shrub with a root ball in preparation for transplanting said tree or shrub. A hand cart for use in lifting is also disclosed. The set of hooks positioned under the root ball may be lifted by means of attachment to the rear edge of the hand cart while said hand cart is in a vertical position and rotating said hand cart toward the horizontal. The hand cart may be supplied with long handles to provide additional leverage when they are pulled to rotate the cart from the vertical to the horizontal.

Claims

1. A system for lifting trees or shrubs for transplanting comprising:

a set of a plurality of hooks each said hook having an upright leg, a transverse arm, and an angled section between said upright leg and said transverse arm;

each said upright leg having an upper end and a lower end, said upper end affixed to a flexible lifting member, said lower end affixed to said angled section;

said transverse arm having an arcuate shape and a pointed end, said transverse arm extending between said angled section and said pointed end, said transverse arm being formed of a slender, elongate member;

said angled section being shorter than said transverse arm and forming an angle of approximately 90°

, said angled section having a radius of curvature smaller than the radius of curvature of said arcuate transverse arm;

a cart, said cart having a bed, and an axle fulcrum;

said cart having a fastening point, wherein when said cart is in the vertical position, the flexible lifting member can be attached to the fastening point, and then the cart can be rotated around the axle fulcrum from the vertical position toward the horizontal position, and thereby a lifting force can be applied to the hook attached to the lifting member.

2. A system for lifting trees and shrubs as in claim 1, further comprising:

said bed having two side edges, a front edge and a rear edge;

a wheel mounted on said bed by an axle, said axle constituting said axle fulcrum;

said fastening point located at the rear edge, wherein when said cart is in the vertical position, said flexible lifting member can be attached to said fastening point, said cart can be rotated from the vertical position toward the horizontal position, and a lifting force can thereby be applied to said hook attached to said lifting member.

3. A system as in claim 2, further comprising:

a plurality of fastening points spaced apart along said rear edge and separated by separating means.

4. A system as in claim 2, further comprising:

a handle having an attachment portion and a distal end, said attachment portion fastened to said bed, said distal end being furthest from said front edge;

a pulling rope attached to said distal end, wherein when said cart is in a vertical position, the pulling rope may be pulled to apply a force tending to rotate said cart from the vertical position toward a horizontal position.

5. A system as in claim 2, further comprising:

a strut for reinforcing said rear edge.

6. A system as in claim 1, wherein:

said arcuate transverse arm has a center of gravity, said center of gravity being between said pointed end and said angled section;

said flexible lifting member attached to said upper end at an attachment point; and

when said hook is suspended from said attachment point, said attachment point is located above a point on said transverse arm between said center of gravity and said angled section.

7. A system as in claim 6, wherein:

said angled section forms an angle slightly more acute than 90°

.

8. A system as in claim 1 wherein:

said bed has a front edge and said cart has a front edge fulcrum at said front edge of said bed;

said front edge fulcrum spaced apart from said axle fulcrum by a distance greater than the radius of said wheel.