Gardening shears having energy-saving function
AssigneeHo Cheng Garden Tools Co., Ltd.
InventorYao-Chung Huang
Life of this patent
Estimating the term…
Abstract
A pair of gardening shears include a first cutting blade, a second cutting blade, and two extension arms. The second cutting blade has a first portion pivotally mounted on the first portion of the first cutting blade by a pivot bolt. Each of the extension arms has a first portion pivotally mounted on the mediate portion of the second cutting blade and a mediate portion movably mounted on the second portion of the first cutting blade by a guide pin. Thus, when the first cutting blade is driven by the extension arms to pivot toward the second cutting blade, the guide pin is movable outwardly relative to the pivot bolt to increase a length between the guide pin and the pivot bolt to increase the force arm length and to produce a larger cutting force by the leverage action.
Claims16
A pair of gardening shears, comprising:
- a first cutting blade, a second cutting blade, and two extension arms, wherein:
- the first cutting blade has a first portion, a second portion and a mediate portion located between the first portion and the second portion;
- the second cutting blade has a first portion, a second portion and a mediate portion located between the first portion and the second portion;
- the first portion of the second cutting blade is pivotally mounted on the first portion of the first cutting blade;
- each of the two extension arms has a first portion, a second portion and a mediate portion located between the first portion and the second portion;
- the first portion of each of the two extension arms is pivotally mounted on the mediate portion of the second cutting blade;
- the mediate portion of each of the two extension arms is movably mounted on the second portion of the first cutting blade;
- the first portion of the second cutting blade is pivotally connected with the first portion of the first cutting blade by a pivot bolt;
- the first portion of each of the two extension arms is pivotally connected with the mediate portion of the second cutting blade by a pivot pin;
- the mediate portion of each of the two extension arms is movably mounted on the second portion of the first cutting blade by a guide pin.
A pair of gardening shears, comprising:
- a first cutting blade, a second cutting blade, and two extension arms, wherein:
- the first cutting blade has a first portion, a second portion and a mediate portion located between the first portion and the second portion;
- the second cutting blade has a first portion, a second portion and a mediate portion located between the first portion and the second portion;
- the first portion of the second cutting blade is pivotally mounted on the first portion of the first cutting blade;
- each of the two extension arms has a first portion, a second portion and a mediate portion located between the first portion and the second portion;
- the first portion of each of the two extension arms is pivotally mounted on the mediate portion of the second cutting blade;
- the mediate portion of each of the two extension arms is movably mounted on the second portion of the first cutting blade;
- the gardening shears further comprise:
- a first handle secured on the second portion of the second cutting blade by a first locking screw to move the second cutting blade;
- a second handle secured on the second portion of each of the two extension arms by a second locking screw to move each of the two extension arms.
Dependencies are inferred from the claim text.