The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2000
Filed:
Mar. 03, 1999
Kevin Stones, Bishop Auckland, GB;
Martyn Riley, Newcastle, GB;
Black & Decker, Inc., Neward, DE (US);
Abstract
A chain saw is provided that comprises a motor which rotatingly drives a cutting chain via a sprocket mounted on a spindle (34) via a clutch mechanism. When the clutch mechanism (17) is engaged, a pivotal handle guard (22) interacts with the clutch mechanism to disengage the clutch mechanism (17). The clutch mechanism is biased towards disengagement. An actuating means (8, 68) is provided such as a switch which is releasably connected via a pin located within a groove to the clutch mechanism (17). The actuating means can override the biasing force to engage the clutch (17) when the actuating means (8, 68) is connected to the clutch (17). The pivotal handle guard (22) is configured so that it interacts with the pin wherein, when the pivotal handle guard (22) is activated, it detaches the actuating means (8, 68) from the clutch mechanism (17) by knocking the pin out of the groove.