Apparatus for measuring the combined resistance to displacement

Details Apparatus for measuring the combined resistance to displacement Apparatus for measuring the combined resistance to displacement

1977-04-25

1978-09-26

Ruehl, Charles A.

Measuring and testing

Volumetric content measuring

G01L 504

Patent

active

041160541

ABSTRACT:
Apparatus for measuring the spring rate of the total string plane of a racket. A frame is provided for positioning the racket head. The frame supports a member which is movable towards the strings in a direction normal to its plane. A measuring device is interposed between the frame and the strings whereby when the strings are displaced from their normal plane as a result of movement of the member, the measuring device displays an indication representative of the strings' resistance to the displacement.

REFERENCES:
patent: 1833195 (1931-11-01), Albright, Jr.
patent: 1871776 (1932-08-01), Chatillon
patent: 3310981 (1967-03-01), Nixon et al.

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