Wall or floor chainsaw
AssigneeHusqvarna AB
InventorAndreas Jonsson
Life of this patent
Estimating the term…
Abstract
A chain bar unit for a wall saw is presented herein. The chain bar unit can include a bar configured to receive a circulating chain or wire around a perimeter of the bar. The chain bar unit also can include a driving gear for driving the chain or wire around the bar, the driving gear configured to be coupled to an output shaft of the wall saw. The chain bar unit further includes the bar being tapered from an end proximate to the driving gear to a distal end having a distal end radius, wherein a width of the bar at the proximate end, is at least two times the distal end radius of the distal end.
Claims20
A chain bar unit for a wall saw, comprising
- a bar configured to receive a circulating chain or wire around a perimeter of the bar;
- a driving gear for driving the chain or wire around the bar, the driving gear configured to be coupled to an output shaft of the wall saw;
- the bar being tapered from an end proximate to the driving gear to a distal end having a distal end radius, wherein a width of the bar at the proximate end, is at least two times the distal end radius of the distal end.
A clutch for a wall chainsaw comprising:
- a gear wheel;
- a drive wheel coupled to the gear wheel by at least a clutch plate, a biasing wheel and at least one fastening mechanism;
- the clutch plate positioned adjacent to the gear wheel and frictionally engages the gear wheel;
- the at least one fastening mechanism couples the biasing wheel to the clutch plate and the clutch plate to the gearwheel;
- the biasing wheel providing a fixed biasing force to the clutch plate allowing the clutch plate to slip in relation to gear wheel in the event a torque at the gear wheel is exceeded.
Dependencies are inferred from the claim text.