US 12,453,316 B2
Pruner
Niko Rusanen, Espoo (FI); Mikko Heine, Espoo (FI); Erkki Seppäläinen, Kauniainen (FI); and Thomas Nyholm, Helsinki (FI)
Assigned to Fiskars Finland Oy Ab, Espoo (FI)
Filed by Fiskars Finland Oy Ab, Espoo (FI)
Filed on Jun. 16, 2023, as Appl. No. 18/336,794.
Prior Publication US 2024/0415066 A1, Dec. 19, 2024
Int. Cl. A01G 3/08 (2006.01)
CPC A01G 3/085 (2013.01) 14 Claims
OG exemplary drawing
 
1. A pruner comprising:
a pruner body comprising a first body section and a second body section attached to each other;
a cutting system connected to the first body section, the cutting system comprising a first cut element and a second cut element pivotably attached to each other for cutting branches, wherein the first cut element and the second cut element are configured to move relative to each other such that the cutting system has an open position and a closed position,
an electric motor connected to the second body section, and configured to provide driving power for the cutting system,
a control system configured to control the electric motor, and
a blade stuck detection system configured to detect a blade stuck situation in which the cutting system is not able to reach the closed position,
wherein the control system, as a response to detection of the blade stuck situation, is configured in a recut operation to rotate the electric motor in a second direction opposite the first direction, and then to rotate the electric motor in the first direction to actuate the cutting system towards the closed position; wherein the cutting system further comprises: at least one return spring configured to return the cutting system to the open position, and a transmission rope, wherein a first end of the transmission rope is connected to the cutting system, and a second end of the transmission rope is connected to the electric motor such that rotation of the electric motor in a first direction pulls the first end of the transmission rope towards the second body section.