Patent Application
20090044413
(a) Field of the Invention
The present invention relates to a gardening implement and more particularly to a pair of multipurpose gardening shears, which has the combined functionality of thinning shears, hedge shears, and cut-off shears.
(b) Description of the Prior Art
Conventional gardening shears are available in numerous types. Different types of gardening shears provide different functions for different purposes. For example, pruning shears are provided for pruning trees, vines, etc., hedge shears are used for keeping hedges neat, trimmed and shaped, and cut-off shears are used for cutting off rotten wood. Each type of these gardening shears has a different shape. It is expensive to keep many different gardening shears around for different purposes. Storage and use of these gardening shears are also cumbersome.
The present invention has been accomplished under the circumstances in view. According to one aspect of the present invention, a pair of multipurpose gardening shears comprises a first cutter blade and a second cutter blade. The first and second cutter blades are pivotally connected together for scissors action. The first cutter blade has a broad first cutting edge and a narrow elongated second cutting edge at the front part and an anvil at the rear part. The second cutter blade has a curved first cutting edge for working with the first cutting edge of the first cutter blade for pruning trees, a second cutting edge for working with the second cutting edge of the first cutter blade for trimming hedges, and a third cutting edge for working with the anvil of the first cutter blade for cutting off rotten wood.
According to another aspect of the present invention, the first cutter blade and the second cutter blade each have its respective rear part extending from the rear end of its respective front part at an angle. This angle design is a human factor engineering design that enables the user to cut trees, hedges, or rotten wood with the multipurpose gardening shears conveniently. During cutting, the cutting edges of the multipurpose gardening shears intersect with the tree, hedge, or rotten wood at about a right angle.
Referring to
The first cutter blade 1 has a front part 13, a middle part, a rear part 14 backwardly extending from the middle part and fixedly connected with the grip 11, a pivot hole 12 disposed in a middle part between the front part 13 and the rear part 14, a first cutting edge 131 and a second cutting edge 132 formed on one lateral side of the front part 13 and extending in a direction from the proximal side of the front part 13 abutted to the middle part between the front part 13 and the rear part 14 toward the distal side of the front part 13 away from the middle part between the front part 13 and the rear part 14, and an anvil 141 fixedly provided at the rear part 14. The anvil 141 may be directly formed integral with a part of the rear part 14. Alternatively, the anvil 141 can be separately made and then fixedly fastened to the rear part 14. The first cutting edge 131 is a broad cutting edge for working with the second cutter blade 2 for pruning trees. The second cutting edge 132 is a narrow elongated cutting edge for working with the second cutter blade 2 for trimming hedges. The anvil 141 is adapted to work with the second cutter blade 2 for cutting off rotten wood.
The second cutter blade 2 has a front part 23, a middle part, a rear part 24 backwardly extending from the middle part and fixedly connected with the grip 21, a pivot hole 22 disposed in the middle part between the front part 23 and the rear part 24, a first cutting edge 231 and a second cutting edge 232 formed on the outer lateral side of the front part 23 and extending in a direction from the proximal side of the front part 23 abutted to the middle part between the front part 23 and the rear part 24 toward the distal side of the front part 23 away from the middle part between the front part 23 and the rear part 24 corresponding to the first cutting edge 131 and second cutting edge 132 of the first cutter blade 1, and a third cutting edge 241 formed on the inner lateral side of the rear part 24 corresponding to the anvil 141 at the first cutter blade 1. The first cutting edge 231 is a curved flat edge.
Further, a pivot device 3 is fastened to the pivot hole 12 of the first cutter blade 1 and the pivot hole 22 of the second cutter blade 2 to pivotally join the two cutter blades 1 and 2. Thus, the first cutting edge 131 of the first cutter blade 1 can work with the first cutting edge (curved flat edge) 231 of the second cutter blade 2 to prune tree branches 4 (see
Further, the front part 13 or 23 extends from the rear part 14 or 24 at a predetermined angle, preferably 140°˜170°. This angle design is a human factor engineering design that enables the user to cut trees, hedges, or rotten wood with the multipurpose gardening shears conveniently. During cutting, the cutting edges of the multipurpose gardening shears intersect with the tree, hedge, or rotten wood at about a right angle.
According to the aforesaid first embodiment, the second cutting edge 132 of the first cutter blade 1 and the second cutting edge 232 of the second cutter blade 2 are slightly curved at the middle (see
Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.
