WO2001011939A1 - Nouvelle beche tariere - Google Patents

Nouvelle beche tariere Download PDF

Info

Publication number
WO2001011939A1
WO2001011939A1 PCT/US1999/018465 US9918465W WO0111939A1 WO 2001011939 A1 WO2001011939 A1 WO 2001011939A1 US 9918465 W US9918465 W US 9918465W WO 0111939 A1 WO0111939 A1 WO 0111939A1
Authority
WO
WIPO (PCT)
Prior art keywords
elongated handles
elongated
post hole
handles
hole digger
Prior art date
Application number
PCT/US1999/018465
Other languages
English (en)
Inventor
Porter T. Pickren
Original Assignee
Pickren Porter T
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pickren Porter T filed Critical Pickren Porter T
Priority to PCT/US1999/018465 priority Critical patent/WO2001011939A1/fr
Priority to AU55616/99A priority patent/AU5561699A/en
Publication of WO2001011939A1 publication Critical patent/WO2001011939A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C5/00—Making or covering furrows or holes for sowing, planting or manuring
    • A01C5/02—Hand tools for making holes for sowing, planting or manuring
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B1/00—Hand tools
    • A01B1/16—Tools for uprooting weeds
    • A01B1/18—Tong-like tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B11/00—Other drilling tools
    • E21B11/005—Hand operated drilling tools

Definitions

  • the present invention relates to a new and improved manual post hole digger.
  • the improved manual post hole digger permits the user to more conveniently produce a vertical hole with an essentially constant hole diameter through the length of the hole, enabling the user to dig deep holes.
  • a common type of manual post hole digger is the clamshell post hole digger.
  • Previously known clamshell post hole diggers typically comprise a pair of sharpened shovel blades mounted on pivotally connected elongated handles. The post hole digging is accomplished by thrusting the blades into the ground then spreading the handles apart forcing the shovel blades together gripping the soil. The soil is then removed from the hole and dumped to the side. This process is repeated until a hole of the desired depth is attained.
  • One objective of the present invention is to provide an improved clamshell post hole digger that enables the user to dig essentially constant diameter holes.
  • the present invention enables the user to use either abduction or adduction to dig deeper post holes without having to increase the diameter of the hole opening as the depth of the hole increases.
  • the post hole digger of the present invention utilizes a unique cross-handled design which enables the user to close the blades of the post hole digger without having the handles wider than the diameter of the top of the hole.
  • the present invention comprises the following components, two sharpened shovel blades, two hinge brackets, and two elongated handles.
  • the hinge brackets there are an offset handle mounting plate, shovel blade mounting plate, and an axial pivot point, where the offset handle mounting plate and the shovel blade mounting plate are on opposite sides of the axial pivot point.
  • the elongated handles are secured to the offset mounting plates on the hinge brackets.
  • the shovel blades are secured to the shovel blade mounting plate.
  • the hinge brackets are secured together at the axial pivot point with the shovel blades opposing each other.
  • the shovel blades are made of stainless steel.
  • the offset configuration allows the elongated handles to be pushed or pulled towards each other and cross without coming into contact. Through this crossing the shovel blades close and the elongated handles stay within the diameter of the hole opening. This enables the user to dig a deeper constant diameter post hole.
  • a further objective of the present invention is to decrease the user's fatigue.
  • the user can change from abduction to adduction and back to abduction by changing the position of the hands on the elongated handles.
  • the switching from abduction to adduction allows the user to use different muscles and decrease fatigue.
  • a further aspect of the present invention pertains to markings on one, or both, of the elongated handles which show the depth of the hole.
  • the user can easily dig a hole of a desired depth.
  • one aspect of the present invention is a cross-handled post hole digger with ruled handles.
  • the ruled handles of the present invention can also be used with a standard post hole digger.
  • Other objectives of the present invention are to provide a low cost, simply built, reliable, and easy to use clamshell post hole digger.
  • Figure 1 depicts a full view of a post hole digger of the present invention.
  • Figure 2 depicts the elongated handles crossing, within the diameter of the hole, to close the shovel blades.
  • Figure 3 depicts ruled elongated handles which indicate the depth of the hole.
  • Figure 4 depicts a full view of the post hole digger of the present invention.
  • the present invention pertains to an improved post hole digger which allows the user to dig deep, uniform diameter post holes without the need to widen the top of the hole.
  • the post hole digger of the present invention utilizes a unique cross-handled design which enables the user to close the blades of the post hole digger without having the handles wider than the diameter of the top of the hole.
  • the unique cross-handled design of the post hole digger of the subject invention makes it possible for the user to use either adduction or abduction in operating the digger. Thus, the user is able to dig more (or deeper) holes without tiring.
  • a further aspect of the subject invention pertains to depth indicators on one or both of the handles of a post hole digger.
  • These depth indicators are typically in the form of a ruled handles which show the depth of the hole in feet and inches, or in metric units or in other units.
  • the present invention which is best understood with reference to Figures 1 to 3 , will now be discussed in greater detail.
  • the present invention as shown in Figure 1 is a post hole digger 1.
  • a preferred embodiment of the present invention comprises the following components: two elongated handles 2, two hinge brackets 3 each with a offset handle mounting plate 4, a shovel blade mounting plate 5, and a axial pivot point 6, where the offset handle mounting plate 4 and the shovel blade mounting plate 5 are on opposite sides of the axial pivot point 6, and two shovel blades 7 each with a sharpened end 8 and a shovel mounting member 9.
  • the elongated handle 2 is about 4 feet to 6 feet in length with a diameter of approximately % inch to about 2 inches. Most preferably the handles are about 1 inch to 1.25 inches.
  • the elongated handles 2 are mounted to the offset handle mounting plate 4 on the hinge brackets 3.
  • the elongated handles 2 are mounted to the offset handle mount plates 4 such that the elongated handles 4 are offset about 3 inches to 5 inches from each other. Most preferably the offset between the elongated handles is about 3.5 inches to 4 inches in length.
  • the shovel blades 7 are mounted to the hinge brackets 3 by mounting the shovel mounting member 9 to the shovel blade mounting plate 5.
  • the hinge brackets 3 are attached together by a pivot pin 10 at the axial pivot point 6 with the shovel blades 7 opposing each other.
  • a pivot pin 10 at the axial pivot point 6 with the shovel blades 7 opposing each other.
  • Substantially straight is defined as meaning when a user grips the elongated handles 4 and thrust the post hole digger 1 into the ground, a majority of the applied downward force is translated linearly through the elongated handle 4 into the shovel blades 7.
  • the post hole digger is provided with multiple pivot point placements from which the user can choose the appropriate pivot point for a particular use. This can be accomplished by, for example, moving the pivot pin to one of the alternate axial pivot point placement locations. To operate the post hole digger 1, the user grasps and holds the elongated handles
  • the user can change from abduction to adduction and back to abduction by changing the position of the hands.
  • the switching from abduction to adduction allows the user to use different muscles and decrease fatigue.
  • the cross-handled design of the present invention allows the user to close the blades to grasp soil using a motion wherein the user's arms and hands are in front of the body in a powerful position. This is in contrast to previous post hole diggers which required the user to extend his arms widely in order to grasp the soil. The user repeats this process until the hole has reached the desired depth.
  • one or both of the elongated handles 2 are ruled 11 to indicate the depth of the hole.
  • the ruling may be in inches and/or metric.
  • the ruling embodiment of the present invention can be used with a standard post hole digger in addition to the cross handled digger described herein.
  • the elongated handles 2 can have the ability to increase in length, to allow for the digging of deeper holes.
  • the increase in the length of the elongated handles can be accomplished by different means including, but not limited, to the attaching of extensions to the elongated handles and designing the elongated handles with the ability to telescope, to increase and decrease in length.
  • the elongated handles 2 can be tapered having a larger diameter at the top and tapering to a smaller diameter at the base.
  • the larger diameter at the top of the elongated handles 2 allows the user to better grip the elongated handles 2 and decrease fatigue.
  • the handles may taper with the smaller diameter at the top.
  • the top of the elongated handles 2 can be fitted with grips to allow the user to better grip the elongated handles 2.
  • the post hole digger 1 can be made out of any material that is suitable for outdoor use.
  • the post hole digger of the present invention is made of a material which is durable, substantially non-corroding and light weight. Examples of such materials include, but are not limited to, aluminum, stainless steel, fiberglass, wood, and composite materials.
  • the present invention post hole digger 1 is low cost, simply built, reliable, and easy to use.
  • the blades of the post hole digger are made from high carbon steel.
  • the material for connecting the blades to the handles may be, for example, CQMS milled steel.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Soil Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne une bêche tarière qui facilite le creusement de trous profonds de diamètre uniforme. A cet effet, on croise les poignées de la bêche tarière pour fermer les lames de la bêche. Ceci permet aux poignées de rester à l'intérieur du diamètre du trou et évite de devoir agrandir le diamètre de ce dernier lorsque la profondeur du trou augmente.
PCT/US1999/018465 1999-08-13 1999-08-13 Nouvelle beche tariere WO2001011939A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1999/018465 WO2001011939A1 (fr) 1999-08-13 1999-08-13 Nouvelle beche tariere
AU55616/99A AU5561699A (en) 1999-08-13 1999-08-13 Novel post hole digger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1999/018465 WO2001011939A1 (fr) 1999-08-13 1999-08-13 Nouvelle beche tariere

Publications (1)

Publication Number Publication Date
WO2001011939A1 true WO2001011939A1 (fr) 2001-02-22

Family

ID=22273385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/018465 WO2001011939A1 (fr) 1999-08-13 1999-08-13 Nouvelle beche tariere

Country Status (2)

Country Link
AU (1) AU5561699A (fr)
WO (1) WO2001011939A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9010818B2 (en) 2012-07-13 2015-04-21 Nathan A. Scolari Single handle post hole digger

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761503A (en) * 1928-10-20 1930-06-03 Tonhardt Walter Hand excavator
US2435473A (en) 1946-02-23 1948-02-03 Dave Mangan Posthole digger
FR1019191A (fr) * 1950-01-25 1953-01-19 Plantoir
US2654626A (en) 1946-11-04 1953-10-06 Rice Charles John Implement for carrying out digging operations
US2710765A (en) 1950-03-09 1955-06-14 Arens Charles Anthony Post hole digger
US4042270A (en) * 1976-04-15 1977-08-16 Weiland Edward E Post hole digger
US4057277A (en) * 1976-11-24 1977-11-08 Burkholder Marie L Yard and garden tool
US4489969A (en) * 1982-09-30 1984-12-25 Clayton Merry Clam digging tool
US4549612A (en) * 1983-12-27 1985-10-29 Theresa Caldwell Soil sampler
GB2183432A (en) * 1985-12-07 1987-06-10 David Barrie Freeman A multi-purpose implement
US4986368A (en) * 1988-11-14 1991-01-22 Underwood John P Planting apparatus
US5273331A (en) 1993-04-30 1993-12-28 Burnham Francis L Post hole digger
US5320363A (en) 1993-04-30 1994-06-14 Burnham Francis L Post hole digger
US5427424A (en) 1994-06-30 1995-06-27 Robinson; John A. Single handle post hole digger
US5478128A (en) 1993-11-17 1995-12-26 Aaland; Hjalmar A. Clamshell action post hole digger
US5497714A (en) * 1994-07-11 1996-03-12 Schlotthauer; James J. Planting hole digger
US5669648A (en) 1996-06-12 1997-09-23 Luck; Michael Lewis Post hole digger
US5743579A (en) * 1996-12-05 1998-04-28 Ranburger; Carl W. Digging tool

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1761503A (en) * 1928-10-20 1930-06-03 Tonhardt Walter Hand excavator
US2435473A (en) 1946-02-23 1948-02-03 Dave Mangan Posthole digger
US2654626A (en) 1946-11-04 1953-10-06 Rice Charles John Implement for carrying out digging operations
FR1019191A (fr) * 1950-01-25 1953-01-19 Plantoir
US2710765A (en) 1950-03-09 1955-06-14 Arens Charles Anthony Post hole digger
US4042270A (en) * 1976-04-15 1977-08-16 Weiland Edward E Post hole digger
US4057277A (en) * 1976-11-24 1977-11-08 Burkholder Marie L Yard and garden tool
US4489969A (en) * 1982-09-30 1984-12-25 Clayton Merry Clam digging tool
US4549612A (en) * 1983-12-27 1985-10-29 Theresa Caldwell Soil sampler
GB2183432A (en) * 1985-12-07 1987-06-10 David Barrie Freeman A multi-purpose implement
US4986368A (en) * 1988-11-14 1991-01-22 Underwood John P Planting apparatus
US5273331A (en) 1993-04-30 1993-12-28 Burnham Francis L Post hole digger
US5320363A (en) 1993-04-30 1994-06-14 Burnham Francis L Post hole digger
US5478128A (en) 1993-11-17 1995-12-26 Aaland; Hjalmar A. Clamshell action post hole digger
US5427424A (en) 1994-06-30 1995-06-27 Robinson; John A. Single handle post hole digger
US5497714A (en) * 1994-07-11 1996-03-12 Schlotthauer; James J. Planting hole digger
US5669648A (en) 1996-06-12 1997-09-23 Luck; Michael Lewis Post hole digger
US5743579A (en) * 1996-12-05 1998-04-28 Ranburger; Carl W. Digging tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9010818B2 (en) 2012-07-13 2015-04-21 Nathan A. Scolari Single handle post hole digger

Also Published As

Publication number Publication date
AU5561699A (en) 2001-03-13

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