US Patent: 4,982,612
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| Torque Wrench with Measurements Independent of Hand-Hold Position
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Patentee:
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| Nancy C. Rittmann (exact or similar names) - Racine, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 03, 1988 |
| Granted: |
Jan. 08, 1991 |
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Stan Schulz
Snap-On Tools Company History
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Description: |
| Emrich & Dithmar - patent attorneys
Abstract
A torque measuring wrench includes a deflection beam provided with a socket head at one end and having a region of reduced cross-sectional area. Four strain gauges are mounted on the beam and connected in a measuring bridge, with one gauge disposed at the region of reduced cross-sectional area and the other gauges disposed closer to the ratchet head. A tubular handle is connected to the othe end of the beam and encloses battery-powered control circuit including indicating means. The torque wrench measurements are independent of the position along the handle at which the force is applied by the user.
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