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US Patent: D115,416
Torque Indicating Tool
Siegmund Mandl - Milwaukee County, WI

USPTO Classifications:

Tool Categories:
wrenches : torque wrenches

Blackhawk Manufacturing Company - Milwaukee, WI

Blackhawk Manufacturing Company - Milwaukee, WI

none listed

Patent Dates:
Applied: May 10, 1939
Granted: Jun. 27, 1939

Patent Pictures: [ 1 | 2 ]
Siegmund Mandl design patent June 27, 1939
USPTO pdf tiff
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A bar type torque wrench.

Design matches BLACKHAWK TORKFLASH torque wrench -- the indicator scale rotates to show torque for common bolt sizes, foot pounds, etc. See also patent no. 2,242,613 which includes description of the electric flashlight circuit which explains the "FLASH" part of the name.

Term of patent 3 1/2 years.

Morsell, Lieber & Morsell - patent attorneys

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