Patent · US Expired

Motor-drive chain saw with a clutch and oil pump

US4662071A · kind A · utility

31Cited by

2References

22Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Klaus Hoppner · Erbach, DE
Benno Tilders · Waiblingen, DE
Anton Wehle · Fellbach, DE
Gunter Wolf · Eberdingen, DE

Key dates

Filing date	Nov 14, 1984
Grant date	May 5, 1987
Priority date	—
Expiry date	Nov 14, 2004

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16N13/10
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention is directed to a motor-driven chain saw wherein a sprocket for a saw chain and a drive wheel for an oil pump are rotatably journalled on the crankshaft. The oil pump pumps oil for lubricating the saw chain and guide bar. The sprocket and the drive wheel are driven via a clutch drum. In this arrangement, a detachable resilient connecting member is provided to connect the drive wheel of the oil pump to the clutch drum at the peripheral wall of the latter. The resilient connecting member protects the drive wheel and the oil pump from excessive wear.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.