Fiskars Finland Oy Ab

Olavi Lindén

Markus Paloheimo

Jan Lindén

Aaro Huttunen

An electric pole pruner having a spring returned cutting head and equipped with a drive unit having an electric motor coupled to a drum via an epicyclic gear assembly is configured to reduce rotation speed and to increase torque. A string element is coupled to the drum of the drive unit, and to the cutting head so as to actuate the cutting head. The pole pruner further includes a locking arrangement to selectively lock or release a ring gear of the gear assembly so as to convert rotation of the electric motor into rotation of the drum when the ring gear is locked, and to convert rotation of the drum into rotation of the ring gear when the ring gear is released.

Electric pole pruner

Pruning shears include a cutting head with a spring-biased blade; a driving line connected at a first end to the blade; an elongated body; a handle; and a frusto-conical shaped wheel connected rotatably to the handle. The diameter of the wheel at a first end being smaller than the diameter at a second end. The line is wound into a spiral groove around the wheel at the first end; a second end of the line is attached to a second end of the elongated body; and the line wound around the wheel moves toward the second end of the wheel when unwinding a part of the line from around the wheel and winding another part of the line around the wheel for decreasing the distance between the first and second ends of the line, resulting in movement of the blade in relation to the jaw, when the handle is moved.

Pruning shears with frusto-conical wheel

Pruning shears include a cutting head with a spring-biased blade pivotally connected to a jaw and arranged to sever a workpiece received in a bight formed by the jaw. A drive mechanism is connected to the cutting head and an elongate housing is connected to the drive mechanism. The drive mechanism includes a rotation preventer for preventing rotation of a second pulley in relation to the drive mechanism when a drawing torque is applied to the second pulley. The drawing torque is greater than a threshold torque, resulting in a second pulley being stationary in relation to the drive mechanism and the first pulley rotating in relation to the drive mechanism.

Pruning shears

A cutting tool includes a first lever having a first end and a second end, the first end being connected to a second elongated element in an articulated manner at a third pivot point and the second end being arranged to engage with a tongue in a metal plate to transmit force from the second elongated element to a first blade in the metal plate so as to perform a cutting movement with a cutting jaw when the first and the second elongated elements are shifted towards one another. The cutting tool also comprises an engagement device provided in the tongue and arranged to receive the second end of the lever optionally at two or more engagement points with respect to the first pivot point so as to perform stepwise cutting movements. The engagement points are placed in the tongue successively away from the third pivot point.

Cutting tool

A cutting tool includes a metal plate including a blade that forms a cutting jaw with an anvil, the metal plate being connected in an articulated manner to an anvil part at a first pivot point and connected operationally to a first elongated element having a first tooth gear part for opening and closing the cutting jaw in response to the relative turning movement of the first elongated element and a second elongated element, having a second tooth gear part, about the second and the third pivot points respectively.

The invention relates to pruning shears comprising a cutting head () with a spring-loaded blade () acting in cooperation with a counter blade (), a drive mechanism () connected to the cutting head (), and an elongated handle () connected to the drive mechanism (). The drive mechanism comprises a first and a second counterpart (), optionally rotating with respect to one another about an axis (), allowing the cutting head () to be adjusted with respect to the elongated handle (), and an upper line arrangement allowing the blade () to be turned about a hinge point () and the cutting head to be adjusted in such a manner that the blade () does not rotate about the hinge point ().

A cutting tool includes a first handle, a second handle, a first cutting blade attached to the first handle at a first pivot point, and a second cutting blade attached to the second handle at a second pivot point. The first and the second cutting blades are engaged with one another at a pivot point for movement in a scissor-like manner between an open position and a closed position in response to rotational movement of the first and the second handles. The first handle includes a first toothed transmission part and the second handle includes a second toothed transmission part, the first and the second toothed transmission parts being arranged to be engaged with one another.

Pruning shears or corresponding cutters comprising a first elongated handle part, a first blade part arranged as an extension of the first handle part, a second blade part pivoted to the first blade part from a first pivot point, and a second elongated handle part pivoted at its first end to the second blade part from a second pivot point. The second elongated handle part is connected to the first elongated handle part with at least one shaft pivotally connected to both the first and second elongated handle parts. The first and second elongated handle parts are arranged in the open position of the shears in remain along their entire length at a distance from each other enabling the use of the shears with one hand along the entire length of the handle parts.

Pruning shears or corresponding cutters

The invention relates to a shaft of a tool or the like with an adjustable length, the shaft comprising a first shaft section () and a second shaft section () which are attached to each other by adjusting means and move telescopically with respect to each other when the shaft length is adjusted. In that case, the adjusting means for adjusting the shaft length comprise a sleeve () provided in the second shaft section () and an at least partly toothed spindle () provided in the first shaft section (), the first end of the spindle being taken through the sleeve (). The sleeve () and the spindle () attach the first () and the second () shaft section adjustably to each other so that the sleeve () and the spindle () can be turned with respect to each other into a position preventing the adjustment of the shaft length and into a position allowing the adjustment of the shaft length where the spindle () can move in the sleeve () in the longitudinal direction.

Shaft of a tool or the like

The invention relates to a device for removing plants or the like from the ground. The device comprises an elongated shaft, a ground support pivoted to a first end of the shaft transversely in relation to the longitudinal axis thereof and at least two blades including grip ends forming an extension of the shaft. The device is characterized in that the blades are pivoted in respect of the ground support transversely in relation to the longitudinal axis of the shaft and functionally connected together such that turning the shaft and the ground support in respect of each other causes the grip ends of the blades to move towards one another, thus enabling to grip the plant.

Device for removing plants or the like from ground

The invention relates to shears comprising a stationary blade () and a movable blade () which moves during the shearing movement of the shears. An operating mechanism () is arranged to affect a point of the pin () located at a distance from the movable blade (). When the shears are being closed, a force is thus generated which also tries to pull the movable blade () towards and against the stationary blade () and to keep the blades () in contact with each other. The operating mechanism () is arranged to affect the joint pin () through a sleeve-like part (). The interior of the sleeve comprises two conical sections (), the narrowest point of the interior of the sleeve determining the point from which the sleeve-like part () affects the joint pin ().

Shears

A pruner has a first elongated member and a second elongated member coupled to a metal plate. The metal plate has a central aperture, a forwardly extending blade and a rearwardly extending tang having a second aperture offset from the central aperture. A jaw is mounted on the first elongated member. A power lever having a first end and a second end. A first coupler pivotably mounted in the central aperture and coupling the first member to the plate, with a second coupler pivotably mounted in the second aperture and coupling the second member to the plate. The power lever is coupled to the first and second elongated members by a third coupler pivotably coupling the first end of the power lever to the second member and a fourth coupler pivotably coupling the second end of the power lever to the first member. The power lever forces the second member to move linearly toward the first member for pivotable movement of the blade and jaw in response to linear movement of the first and second members.

Power lever cutting device

A cutting tool, particularly hedge shears, comprising a first elongated handle member, a second elongated handle member pivotally connected to the first handle member at a first pivot point, a first blade member having a cutting edge and being pivotally connected to the first handle member at a second pivot point, a second blade member having a cutting edge and being pivotally connected to the second handle member at a third pivot point, the first and the second blade members being pivotally connected to each other at a fourth pivot point, the blade members being turnable relative to the fourth pivot point so that their cutting edges move in a scissor-like manner between an open and a closed position, the first, second, third and fourth pivot points forming a quadrangle in which an angle the vertex of which is formed by the first pivot point is approaching but not reaching 180&deg; when the blade members are approaching their closed position, whereby the work done to close the shears creates a force which tends to close the blade members and is the bigger the closer the blades are to their closed position.

Growing community of inventors

Billnäs, Finland

Olavi Lindén