Electronic torque tool with integrated real-time clock

US9395257B2 · kind B2 · utility

Assignee

• Snap-on Incorporated · US

Inventors

• Jie Li · Lo Wu, CN
• Jerry A. King · North Palm Beach, US
• Chris Lawton · Brooks Road, US
• Nathan J. Lee · New City, US
• Andrew R. Lobo · Wadsworth, US

Key dates

• Filing date: May 10, 2013
• Grant date: Jul 19, 2016
• Expiry date: Dec 8, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F11/3065
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Real-time clock circuitry integrated in an electronic torque tool facilitates time-stamping of torque data acquired by the electronic torque tool. The time stamped torque data may be displayed on a display integrated in the electronic torque tool or may be communicated to an external device. The real-time clock circuitry may be adjusted based on information received from an external device or may be manually input to a keypad of the electronic torque tool. A calibration timer integrated in the electronic torque tool monitors time between calibrations of the tool and notifies a user upon expiration of a calibration interval. A secondary power source is coupled to the real-time clock circuitry to maintain power to the real-time clock circuitry during battery replacement.