GB2483663A - Garden shears having meshed gear portions - Google Patents

Garden shears having meshed gear portions Download PDF

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Publication number
GB2483663A
GB2483663A GB201015356A GB201015356A GB2483663A GB 2483663 A GB2483663 A GB 2483663A GB 201015356 A GB201015356 A GB 201015356A GB 201015356 A GB201015356 A GB 201015356A GB 2483663 A GB2483663 A GB 2483663A
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GB
United Kingdom
Prior art keywords
cutter
pivot
main cutter
main
force arms
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB201015356A
Other versions
GB2483663B (en
GB201015356D0 (en
Inventor
Yao-Chung Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ho Cheng Garden Tools Co Ltd
Original Assignee
Ho Cheng Garden Tools Co Ltd
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 Ho Cheng Garden Tools Co Ltd filed Critical Ho Cheng Garden Tools Co Ltd
Priority to GB1015356.7A priority Critical patent/GB2483663B/en
Publication of GB201015356D0 publication Critical patent/GB201015356D0/en
Publication of GB2483663A publication Critical patent/GB2483663A/en
Application granted granted Critical
Publication of GB2483663B publication Critical patent/GB2483663B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/02—Secateurs; Flower or fruit shears
    • A01G3/025—Secateurs; Flower or fruit shears having elongated or extended handles
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/02—Secateurs; Flower or fruit shears
    • A01G3/025—Secateurs; Flower or fruit shears having elongated or extended handles
    • A01G3/0251—Loppers, i.e. branch cutters with two handles
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/04—Apparatus for trimming hedges, e.g. hedge shears
    • A01G3/047—Apparatus for trimming hedges, e.g. hedge shears portable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/26—Hand shears; Scissors with intermediate links between the grips and the blades, e.g. for remote actuation
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/02—Secateurs; Flower or fruit shears
    • A01G3/021—Secateurs; Flower or fruit shears characterized by the arrangement of pivots

Abstract

A pair of gardening shears include a main cutter 10, a secondary cutter 20 pivotally connected with the main cutter, two force arms 30 engaged with the main cutter and the secondary cutter to drive the main cutter and the secondary cutter respectively, and two opposite support plates 40 abutting the main cutter, the secondary cutter and the two force arms. The cutters and force arms are sandwiched between the support plates. Both the main and the secondary cutters have extensions forming receiving spaces 14, 24 having bent distal ends 13, 23 provided with gear portions. Both force arms are provided with a drive gear 34, 35 meshing with the gear portions.

Description

* GARDENING SHEARS WHOSE REACTION FORCE IS DISTRIBUTED
EVENLY WITHOUT PRODUCING A STRESS CONCENTRATION
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a gardening cutting tool and, more particularly, to a pair of gardening shears for shearing a plant.
2. Description of the Related Art
A gardening cutting tool, such as a pair of gardening shears, is used to cut or shear a plant, such as the branches of a tree, in an energy-saving manner, thereby facilitating a user operating the gardening cutting tool. A pair of conventional gardening shears in accordance with the prior art shown in Figs. 8 and 9 comprise a metallic plate 60, a first elongate member 70 and a second elongate member 80. The metallic plate 60 has a first end provided with a first cutting portion 62, a mediate portion provided with a first pivot member 61 and a second end 63 provided with a second pivot member 64 spaced from the first pivot member 61. The first elongate member 70 is pivotally connected with the first pivot member 61 of the metallic plate 60 and has a first end provided with a second cutting portion 71 that is movable relative to the first cuffing portion 62 of the metallic plate 60, a mediate portion provided with a first sector gear portion 73 and a second end provided with a first extension 72.
The second elongate member 80 is pivotally connected with the second pivot member 64 of the metallic plate 60 and has a first end provided with a second sector gear portion 82 meshing with the first sector gear portion 73 of the first elongate member 70 and a second end provided with a second extension 81.
In operation, the second sector gear portion 82 of the second elongate member 80 meshes with the first sector gear portion 73 of the first elongate member 70 so that when the second elongate member 80 is pivoted relative to the first elongate member 70, the metallic plate 60 is driven by the second elongate member 80 to pivot relative to the first elongate member 70, and the first cutting portion 62 of the metallic plate 60 is moved relative to the second cutting portion 71 of the first elongate member 70. Thus, the first cutting portion 62 of the metallic plate 60 is moved relative to the second cutting portion 71 of the first elongate member 70 from the opened position as shown in Fig. 9 to the closed position as shown in Fig. 8 to perform a cutting or shearing action so as to cut or prune a plant, such as the branches of a tree, and the like.
Howeyer, the first elongate member 70 and the second elongate member 80 are mounted on one side of the metallic plate 60 so that when the first elongate member 70 and the second elongate member 80 are subjected to a reaction during the cutting process, the reaction is easily concentrated on the meshing portion of the first elongate member 70 and the second elongate member 80, thereby interrupting operation of the first elongate member 70 and the second elongate member 80, and thereby wasting the user's time and energy. In addition, when the first elongate member 70 and the second elongate member 80 are moved outward relative to each other, the angle between the first elongate member 70 and the second elongate member 80 is easily opened to the maximum extent due to an excessive force so that the user has to exert a larger force to move the first elongate member 70 toward the second elongate member 80 so as to close the first cutting portion 62 of the metallic plate 60 and the second cutting portion 71 of the first elongate member 70, thereby wasting the user's time and energy.
BRIEF SUMMARY OF THE INVENTION
In accordance with the present invention, there is provided a pair of gardening shears, comprising a main cutter, a secondary cutter pivotally connected with the main cutter, two force arms engaged with the main cutter and the secondary cutter to drive the main cutter and the secondary cutter respectively, and two opposite support plates abutting the main cutter, the secondary cutter and the two force arms.
The main cutter has a middle portion provided with a first pivot hole and a first guide slot. The main cutter has a first end provided with a first extension and a second end provided with a first cutting portion. The first extension of the main cutter has a side formed with a first receiving space and has a bent distal end provided with a first driven gear portion. The secondary cutter has a middle portion provided with a second pivot hole and a second guide slot. The second pivot hole of the secondary cutter is pivotally connected with the first pivot hole of the main cutter by a pivot bolt. The secondary cutter has a first end provided with a second extension and a second end provided with a second cutting portion which faces the first cutting portion of the main cutter. The second extension of the secondary cutter has a side formed with a second receiving space and has a bent distal end provided with a second driven gear portion. Each of the two force arms has a first end provided with a pivot portion and a second end provided with a drive handle. The pivot portion of each of the two force arms is received in a respective one of the first receiving space of the main cutter and the second receiving space of the secondary cutter.
The pivot portion of each of the two force arms has a side provided with a drive gear portion meshing with a respective one of the first driven gear portion of the main cutter and the second driven gear portion of the secondary cutter. The pivot portion of each of the two force arms has a periphery formed with a receiving recess to receive a respective one of the first driven gear portion of the main cutter and the second driven gear portion of the secondary cutter. The pivot portion of each of the two force arms has a surface formed with a pivot bore pivotally connected with a respective one of the first guide slot of the main cutter and the second guide slot of the secondary cutter by a respective one of two limit bolts. Each of the two support plates has a surface formed with a first through hole mounted on the pivot bolt and two second through holes mounted on the two limit bolts.
The primary objective of the present invention is to provide a pair of gardening shears whose reaction force is distributed evenly without producing a stress concentration.
According to the primary advantage of the present invention, each of the main cutter and the secondary cutter corresponds to a respective one of the two force arms so that when the main cutter and the secondary cutter perform the cutting action, the reaction applied on the main cutter and the secondary cutter is distributed by the two force arms evenly to prevent from incurring a stress concentration on the main cutter and the secondary cutter so as to facilitate operation and movement of the main cutter and the secondary cutter.
According to another advantage of the present invention, when the main cutter and the secondary cutter are pivoted about the pivot bolt, each of the first guide slot of the main cutter and the second guide slot of the secondary cutter slides on the respective limit bolt to limit the interval of movement of the main cutter and the secondary cutter so as to limit the maximum open angle between the first cutting portion of the main cutter and the second cutting portion of the secondary cutter, thereby preventing the first cutting portion of the main cutter and the second cutting portion of the secondary cutter from being opened to an excessive extent.
According to a further advantage of the present invention, each of the first guide slot of the main cutter and the second guide slot of the secondary cutter is slidable on the respective limit bolt so that when the two force arms are pivoted through a larger angle, the main cutter and the secondary cutter are pivoted through a smaller angle so as to achieve an energy-saving effect.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S) Fig. 1 is a perspective view of a *pair of gardening shears in accordance with the preferred embodiment of the present invention.
Fig. 2 is a partially exploded perspective view of the gardening shears as shown in Fig. 1.
Fig. 3 is an exploded perspective view of the gardening shears as shown in Fig. 1.
Fig. 4 is a front view of the gardening shears as shown in Fig. 1.
Fig. 5 is a schematic operational view of the gardening shears as showninFig.4, Fig. 6 is a schematic operational view of the gardening shears as shown in Fig. 5.
Fig. 7 is a front view of a pair of gardening shears in accordance with another preferred embodiment of the present invention.
Fig. 8 is a front view of a pair of conventional gardening shears in
accordance with the prior art.
Fig. 9 is a schematic operational view of the conventional gardening shears as shown in Fig. 8.
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings and initially to Figs. 1-4, a pair of S gardening shears in accordance with the preferred embodiment of the present invention comprise a main cutter 10, a secondary cutter 20 pivotally connected with the main cutter* 10, two force arms 30 engaged with the main cutter 10 and the secondary cutter 20 to drive the main cutter 10 and the secondary cutter 20 respectively, and two opposite support plates 40 abutting the main cutter 10, the secondary cutter 20 and the two force arms 30 so that the main cutter 10, the secondary cutter 20 and the two force arms 30 are sandwiched between and supported by the two support plates 40.
The main cutter 10 has a middle portion provided with a first pivot hole 11 and a first guide slot 15. The first guide slot 15 of the main cutter 10 has a substantially elongate arc-shaped profile. The main cutter 10 has a first end provided with a first extension 12 and a second end provided with a first cutting portion 16. Preferably, the first cuffing portion 16 of the main cutter 10 is a blade or an anvil. The first extension 12 of the main cutter 10 has a side formed with a first receiving space [4 and has a bent distal end provided with a first driven gear portion 13. The first receiving space 14 of the main cutter 10 is disposed between the first pivot hole 11, the first extension 12 and the first driven gear portion 13. The first driven gear portion 13 of the main cutter 10 is extended into the first receiving space 14.
The secondary cutter 20 has a middle portion provided with a second pivot hole 21 and a second guide slot 25. The second pivot hole 21 of the secondary cutter 20 is pivotally connected with the first pivot hole 11 of the main cutter 10 by a pivot bolt 50 and a first fastening nut 51. The second guide slot 25 of the secondary cutter 20 has a substantially elongate arc-shaped profile. The secondary cutter 20 has a first end provided with a second extension 22 and a second end provided with a second cutting portion 26 which faces the first cutting portion 16 of the main cutter 10. Preferably, the second cutting portion 26 of the secondary cutter 20 is a blade or an anvil. The second extension 22 of the secondary cutter 20 has a side formed with a second receiving space 24 and has a bent distal end provided with a second driven gear portion 23. The second receiving space 24 of the secondary cutter 20 is disposed between the second pivot hole 21, the second extension 22 and the second driven gear portion 23. The second driven gear portion 23 of the secondary cutter 20 is extended into the second receiving space 24.
Each of the two force arms 30 has a first end provided with a pivot portion 32 and a second end provided with a drive handle 31. The pivot portion 32 of each of the two force arms 30 is received in a respective one of the first receiving space 14 of the main cutter 10 and the second receiving space 24 of the secondary cutter 20. The pivot portion 32 of each of the two force arms 30 has a side provided with a drive gear portion 35 meshing with a respective one of the first driven gear portion 13 of the main cutter 10 and the second driven gear portion 23 of the secondary cutter 20. The pivot portion 32 of each of the two force arms 30 has a periphery formed with a receiving recess 34 to receive S a respective one of the first driven gear portion 13 of the main cutter 10 and the second driven gear portion 23 of the secondary cutter 20. The drive gear portion 35 of each of the two force arms 30 has a substantially arc-shaped profile and is extended into the receiving recess 34. The pivot portion 32 of each of the two force arms 30 has a surface formed with a pivot bore 33 pivotally connected with a respective one of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20 by a respective one of two limit bolts 52 and a respective one of two second fastening nut 53.
Each of the two support plates 40 is a circular plate. Each of the two support plates 40 has a surface formed with a first through hole 41 mounted on the pivot bolt 50 and two second through holes 42 mounted on the two limit bolts 52. The first through hole 41 and the two second through holes 42 of each of the two support plates 40 form a triangular arrangement. The first through hole 41 of one of the two support plates 40 has a non-circular elongate shape, and the pivot bolt 50 has a periphery formed with a non-circular elongate locking portion 501 locked in the non-circular elongate first through hole 41 of one of the two support plates 40 50 that the pivot bolt 50 is limited between the two support plates 40 and will not be rotated when the main cutter 10 and the secondary cutter 20 are pivoted relative to each other.
The pivot bolt 50 in turn extends through the first through hole 41 of one of the two support plates 40, the first pivot hole 11 of the main cutter 10, the second pivot hole 21 of the secondary cutter 20 and the first through hole 41 of the other one of the two support plates 40, and the first fastening nut 51 is screwed onto the pivot bolt 50. Thus, the main cutter 10 and the secondary cutter 20 are pivotable about the pivot bolt 50.
Each of the two limit bolts 52 in turn extends through a respective one of the two second through holes 42 of one of the two support plates 40, a respective one of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20, the pivot bore 33 of a respective one of the two force arms 30 and a respective one of the two second through holes 42 of the other one of the two support plates 40, and each of the two second is fastening nuts 53 is screwed onto the respective limit bolt 52. Thus, each of the two force arms 30 is pivotable about a respective one of the two limit bolts 52.
In addition, each of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20 is slidable on a respective one of the two limit bolts 52.
In operation, referring to Figs. 4-6 with reference to Figs. 1-3, when the two force arms 30 are moved by an external force, each of the two force arms 30 is pivoted about the respective limit bolt 52. At this time, the drive Jo gear portion 35 of each of the two force arms 30 meshes with a respective one of the first driven gear portion 13 of the main cutter 10 and the second driven gear portion 23 of the secondary cutter 20 so that when each of the two force arms 30 is pivoted about the respective limit bolt 52, the main cutter 10 and the secondary cutter 20 are driven by the two force arms 30 and are pivoted about the pivot bolt 50. In such a manner, the main cutter 10 and the secondary cutter are driven by the two force arms 30 to pivot relatiye to each other so that the first cutting portion 16 of the main cutter 10 and the second cutting portion 26 of the secondary cutter 20 are moved relative to each other.
Thus, when the two force arms 30 are moved outward relative each other, the main cutter 10 and the secondary cutter 20 are moved from the closed position as shown in Fig. 4 to the opened position as shown in Figs. 5 and 6, so that the first cutting portion 16 of the main cutter 10 and the second cutting portion 26 of the secondary cutter 20 are moved outward relative to each other. On the contrary, when the two force arms 30 are moved toward each other, the main cutter 10 and the secondary cutter 20 are moved from the opened position as shown in Figs. 5 and 6 to the closed position as shown in Fig. 4 to the opened position as shown in Figs. 5 and 6, so that the first cutting portion 16 of the main cutter 10 and the second cuffing portion 26 of the secondary cutter 20 are moved toward each other to perform a cutting or shearing action so as to cut or prune a plant and the like.
It is to be noted that, when the main cutter 10 and the secondary cutter 20 are pivoted about the pivot bolt 50, each of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20 is slidable on the respective limit bolt 52 as shown in Figs. 4-6 so as to limit the interval of movement of the main cutter 10 and the secondary cutter 20 and to limit the maximum open angle between the first cutting portion 16 of the main cutter 10 and the second cutting portion 26 of the secondary cutter 20, thereby preventing the first cutting portion 16 of the main cutter 10 and the second cutting portion 26 of the secondary cutter 20 from being opened to an excessive extent. In addition, the pivot bolt 50 and the two limit bolts 52 form multiple pivot fulcrums to distribute the force efficiently. Further, each of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20 is slidable on the respective limit bolt 52 so that when the two force arms 30 are pivoted through a larger angle, the main cutter 10 and the secondary cutter 20 are pivoted through a smaller angle so as to achieve an energy-saving effect. Further, each of the main cutter 10 and the secondary cutter 20 corresponds to a respective one of the two force arms 30 to prevent from incurring a stress concentration so that the main cutter 10 and the secondary cutter 20 are moved smoothly.
As shown in Figs. 1-6, the first cutting portion 16 of the main cutter is a blade, and the second cutting portion 26 of the secondary cutter 20 is an anvil.
As shown in Fig. 7, the first cutting portion 16 of the main cutter 10 is a blade, and the second cutting portion 26 of the secondary cutter 20 is also a blade.
Accordingly, each of the main cutter 10 and the secondary cutter 20 corresponds to a respective one of the two force arms 30 so that when the main cutter 10 and the secondary cutter 20 perform the cutting action, the reaction applied on the main cutter 10 and the secondary cutter 20 is distributed by the two force arms 30 evenly to prevent from incurring a stress concentration on the main cutter 10 and the secondary cutter 20 so as to facilitate operation and movement of the main cutter 10 and the secondary cutter 20. In addition, when the main cutter 10 and the secondary cutter 20 are pivoted about the pivot bolt 50, each of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20 slides on the respective limit bolt 52 to limit the interval of movement of the main cutter 10 and the secondary cutter 20 so as to limit the maximum open angle between the first cutting portion 16 of the main cutter 10 and the second cutting portion 26 of the secondary cutter 20, thereby preventing the first cutting portion 16 of the main cutter 10 and the second cutting portion 26 of the secondary cutter 20 from being opened to an excessive extent. Further, each of the first guide slot 15 of the main cutter 10 and the second guide slot 25 of the secondary cutter 20 is slidable on the respective limit bolt 52 so that when the two force arms 30 are pivoted through a larger angle, the main cutter 10 and the secondary cutter 20 are pivoted through a smaller angle so as to achieve an energy-saving effect.
Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.

Claims (6)

  1. CLAIMS1. A pair of gardening shears, comprising: a main cutter; a secondary cutter pivotally connected with the main cutter; two force arms engaged with the main cutter and the secondary cutter to drive the main cutter and the secondary cutter respectively; and two opposite support plates abutting the main cutter, the secondary cutter and the two force arms; wherein the main cutter has a middle portion provided with a first pivot hole and a first guide slot; the main cutter has a first end provided with a first extension and a second end provided with a first cutting portion; the first extension of the main cutter has a side formed with a first receiving space and has a bent distal end provided with a first driven gear portion; the secondary cutter has a middle portion provided with a second pivot hole and a second guide slot; the second pivot hole of the secondary cutter is pivotally connected with the first pivot hole of the main cutter by a pivot bolt; the secondary cutter has a first end provided with a second extension and a second end provided with a second cutting portion which faces the first cutting portion of the main cutter; the second extension of the secondary cutter has a side formed with a second receiving space and has a bent distal end provided with a second driven gear portion; each of the two force arms has a first end provided with. a pivot portion and a second end provided with a drive handle; the pivot portion of each of the two force arms is received in a respective one of the first receiving space of the main cutter and the second receiving space of the secondary cutter; the pivot portion of each of the two force arms has a side provided with a drive gear portion meshing with a respective one of the first driven gear portion of the main cutter and the second driven gear portion of the secondary* cutter; the pivot portion.of each of the two force arms has a periphery formed with a receiving recess to receive a respective one of the first driven gear portion of the main cutter and the second driven gear portion of the secondary cutter; the pivot portion of each of the two force arms has a surface formed with a pivot bore pivotally connected with a respective one of the first guide slot of the main cutter and the second guide slot of the secondary cutter by a respective one of two limit bolts; each of the two support plates has a surface formed with a first through hole mounted on the pivot bolt and two second through holes mounted on the two limit bolts.
  2. 2. The gardening shears of claim 1, wherein the first receiving space of the main cutter is disposed between the first pivot hole, the first extension and the first driven gear portion; the first driven gear portion of the main cutter is extended into the first receiving space; the second receiving space of the secondary cutter is disposed between the second pivot hole, the second extension and the second driven gear portion; the second driven gear portion of the secondary cutter is extended into the second receiving space; the drive gear portion of each of the two force arms has a substantially arc-shaped profile and is extended into the receiving recess.
  3. 3. The gardening shears of claim 1, wherein the main cutter, the secondary cutter and the two force arms are sandwiched between and supported by the two support plates; the pivot bolt in turn extends through the first through hole of one of the two support plates, the first pivot hole of the main cutter, the second pivot hole of the secondary cutter and the first through hole of the other one of the two support plates; the main cutter and the secondary cutter are pivotable about the pivot bolt; each of the two limit bolts in turn extends through a respective one of the two second through holes of one of the two support plates, a respective one of the first guide slot of the main cutter and the second guide slot of the secondary cutter, the pivot bore of a respective one of the two force arms and a respective one of the two second through holes of the other one of the two support plates; each of the two force arms is pivotable about a respective one of the two limit bolts; each of the first guide slot of the main cutter and the second guide slot of the secondary cutter is slidable on a respective one of the two limit bolts.
  4. 4. The gardening shears of claim 1, wherein the first guide slot of the main cutter has a substantially elongate arc-shaped profile; the second guide slot of the secondary cutter has a substantially elongate arc-shaped profile.
  5. 5. The gardening shears of claim 1, wherein the first through hole and the two second through holes of each of the two support plates form a triangular arrangement; the first through hole of one of the two support plates has a non-circular elongate shape; the pivot bolt has a periphery formed with a non-circular elongate locking portion locked in the non-circular elongate first through hole of one of the two support plates so that the pivot bolt is limited between the two support plates.
  6. 6. A pair of gardening shears substantially as hereinbefore described with reference to and as shown in Figures 1 7 of the accompanying drawings.
GB1015356.7A 2010-09-15 2010-09-15 Gardening shears whose reaction force is distributed evenly without producing a stress concentration Expired - Fee Related GB2483663B (en)

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GB1015356.7A GB2483663B (en) 2010-09-15 2010-09-15 Gardening shears whose reaction force is distributed evenly without producing a stress concentration

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Application Number Priority Date Filing Date Title
GB1015356.7A GB2483663B (en) 2010-09-15 2010-09-15 Gardening shears whose reaction force is distributed evenly without producing a stress concentration

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GB201015356D0 GB201015356D0 (en) 2010-10-27
GB2483663A true GB2483663A (en) 2012-03-21
GB2483663B GB2483663B (en) 2012-10-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2499407A (en) * 2012-02-15 2013-08-21 Ho Cheng Garden Tools Co Ltd Shears with toothed engagement
US20140053413A1 (en) * 2012-08-23 2014-02-27 Ho Cheng Garden Tools Co., Ltd. Garden shears

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6829829B1 (en) * 2002-12-18 2004-12-14 Yao-Chung Huang Gardening pruner provided with means to effectuate efficient transmission of force from handles to blades thereof
DE202010003317U1 (en) * 2010-03-01 2010-05-27 HO CHENG GARDEN TOOLS Co., Ltd., Fu Shing Hsiang Energy saving pruning shears
GB2468665A (en) * 2009-03-17 2010-09-22 Thomas Lin Gardening Shears

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6829829B1 (en) * 2002-12-18 2004-12-14 Yao-Chung Huang Gardening pruner provided with means to effectuate efficient transmission of force from handles to blades thereof
GB2468665A (en) * 2009-03-17 2010-09-22 Thomas Lin Gardening Shears
DE202010003317U1 (en) * 2010-03-01 2010-05-27 HO CHENG GARDEN TOOLS Co., Ltd., Fu Shing Hsiang Energy saving pruning shears

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2499407A (en) * 2012-02-15 2013-08-21 Ho Cheng Garden Tools Co Ltd Shears with toothed engagement
US20140053413A1 (en) * 2012-08-23 2014-02-27 Ho Cheng Garden Tools Co., Ltd. Garden shears

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Publication number Publication date
GB2483663B (en) 2012-10-17
GB201015356D0 (en) 2010-10-27

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