Hedge shears
AssigneesHung-Ta Huang, Kun-Chia Cheng
InventorKun-Chia Cheng
Life of this patent
Estimating the term…
Abstract
Hedge shears has a pair of hands, a pair of blades and a rotatable connector secured between the handles and the blades. Each handle has a handle drive slot and each blade has a blade drive slot. The rotatable connector consists of two connecting plates. Each connecting plate has an elongated hole defined in the connecting plate and has a transverse abutting plate formed on an edge of the connecting plate adjacent to the transverse abutting plate of the other connecting plate. A pivot hole is defined in each abutting plate, and a shaft passes through the pivot holes. Two shaft hubs hold opposite ends of the shaft, and a pin secured under each hub passes through the drive slots in the handles or the blades. The blades are able to rotate around the shaft and be operated by the handles by moving the shaft longitudinally.
Claims12
A hedge shear comprising:
- a pair of handles (10R, 10L), each handle (10R, 10L) having a grip (12), an attachment fitting (14) extending inward from each grip (12) and a handle drive slot (16) defined in the attachment fitting (14);
- and
- a pair of blades (20R, 20L) connected to the pair of handle (10R, 10L) with a rotatable connector (30), each blade (20R, 20L) having an enlarged proximal end (24), a cutting edge formed on an inner edge of the blade (20R, 20L) and a blade drive slot (242) defined in the enlarged proximal end (24),
- wherein the rotatable connector (30) is mounted between and connecting the handles (10R, 10L) and the blades (20R, 20L) and comprises a handle drive bracket (32), a blade drive bracket (36), a positioning device and a pivoting device (40), wherein
- the handle drive bracket (32) has a longitudinal handle drive plate with a front edge, two wings and a first elongated hole (322) defined in the longitudinal handle drive plate and aligning with the handle drive slots (16) in the attachment fittings (14), a rear transverse abutting plate (34) formed on the front edge of the longitudinal handle drive plate, and a rear pivot shaft hole (342) defined in the rear transverse abutting plate (34);
- the blade drive bracket (36) has a longitudinal blade drive plate with a rear edge, two wings and a second elongated hole (362) defined in the longitudinal blade drive plate and aligning with the blade drive slots (242) in the blades (20R, 20L), a front transverse abutting plate (38) formed on the rear edge of the blade drive bracket (36) to correspond to rear transverse abutting plate (34), and a pivot hole (382) defined in the front transverse abutting plate (38);
- the positioning device is mounted between and includes elements of the rear transverse and the front transverse abutting plates (34, 38) to hold the two transverse abutting plates (34, 38) in position;
- and
- the pivoting device (40) comprises a shaft (42) with a shoulder, two shaft hubs (46, 48) mounted on the shaft (42), wherein the shaft (42) has a front end and a rear end and penetrates the pivot shaft holes (342, 382) in the rear transverse and front transverse abutting plates (34, 38), and each shaft hub (46, 48) has a pin attached under the hub (46, 48), one shaft hub having the pin pass through the handle drive slots (16) and the first elongated hole (322) and the other shaft hub having the pin pass through the blade drive slots (242) and the second elongated hole (362).
Dependencies are inferred from the claim text.