Portable tester for measuring slip resistance

Details Portable tester for measuring slip resistance Portable tester for measuring slip resistance

1988-04-07

1989-01-17

Levy, Stewart J.

Measuring and testing

Frictional resistance, coefficient or characteristics

G01N 1902

Patent

active

047980800

ABSTRACT:
A portable apparatus for testing the slip resistance of surfaces such as floors and bathtub surfaces operates by applying a load instantaneously to a pad of friction material resting on the surface at a selected angle of attack. An articulated linkage carrying the pad is set at a predetermined angle and the load is substantially instantaneously applied to determine whether the pad slips at the preset angle. Tests may be successively conducted at different angles of the linkage or a single go, on-go test may be conducted at a datum angle. The articulated linkage is carried on a pivoted frame which moves across a segment plate to establish the predetermined angle. A pawl and tooth type latching system holds the frame relative to the plate at the preset angle.

REFERENCES:
patent: 2225140 (1940-12-01), Walker
patent: 2299895 (1942-10-01), Harrali et al.
patent: 2638776 (1953-05-01), Aines
patent: 2955455 (1960-10-01), Frederik
patent: 3098377 (1963-07-01), Beauchamp
patent: 3187552 (1965-06-01), Davies
patent: 3975940 (1986-08-01), Brungraber
Gough et al., Journal of Scientific Instruments, "A Simple Direct-Reading Friction Meter", 30:345-349, Apr. 1953.

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