US 11,895,946 B2
Reciprocating mower unit, system and methods
Naoki Souri, Kawagoe Saitama (JP); and Hiroyuki Miyazawa, Saitama (JP)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Appl. No. 17/431,884
Filed by HUSQVARNA AB, Huskvarna (SE)
PCT Filed Feb. 19, 2019, PCT No. PCT/EP2019/054088
§ 371(c)(1), (2) Date Aug. 18, 2021,
PCT Pub. No. WO2020/169184, PCT Pub. Date Aug. 27, 2020.
Prior Publication US 2022/0151150 A1, May 19, 2022
Int. Cl. A01D 34/76 (2006.01); A01D 34/40 (2006.01); A01D 34/90 (2006.01); A01D 34/404 (2006.01)
CPC A01D 34/76 (2013.01) [A01D 34/404 (2013.01); A01D 34/90 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A reciprocating mower unit configured to be driven by a drive unit via a transmission shaft arranged within a transmission tube, the reciprocating mower unit comprising:
a housing;
a reduction gear arranged within the housing, the reduction gear being configured to receive an input rotary motion from the transmission shaft at a first, relatively higher, rotation speed, and deliver an output rotary motion to a gear output shaft at a second, relatively lower, rotation speed; and
a crank mechanism arranged within the housing, the crank mechanism being configured to convert the output rotary motion of the gear output shaft to an oscillating motion of a pair of mowing blades oscillating in mutual anti-phase about a common oscillation axis, wherein the reciprocating mower unit comprises an input shaft for receiving said input rotary motion from the transmission shaft, wherein the input shaft is provided with a coupling interface for releasably coupling the input shaft to the transmission shaft.