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US 4,056,888 AGranted
Device for measuring the pitch of propeller blades and the like
OwnerEdward W. Hughey, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A device for measuring the pitch of propeller blades and the like is disclosed herein which comprises a shaft on which the bladed item is mounted. An arm is rotatably and slidably received upon the shaft and has a pin which rides along the blade surface to be measured. The pin is moved along the blade surface by rotating and sliding the arm along the shaft. The pitch is determined from measurements of the rotational and axial movement of the arm.
Claims12
A device for measuring the pitch of propeller blades and the like which comprises:
- a base;
- shaft means connected to said base for mounting a propeller coaxial with a base station line;
- an arm mounted upon said shaft means, said arm being rotatable in a plane essentially normal to the base station line, said arm further being movable parallel to the base station line;
- pin means attached to said arm for engaging the surface of a propeller mounted upon said shaft means;
- linear measurement means for measuring the movement of said arm parallel to the base station line;
- and
- rotational measurement means for measuring the rotation of said arm in a plane essentially normal to the base station line.
4 more elements
Dependencies are inferred from the claim text.