Geometrical instruments – Distance measuring – Opposed contacts
Patent
1988-11-10
1990-07-10
Haroian, Harry N.
Geometrical instruments
Distance measuring
Opposed contacts
33512, 33 3A, 33712, G01B 502
Patent
active
049398490
ABSTRACT:
A device for measuring infants has an elongated measuring base having at least one sequence of linear measuring indicia thereon extending from one end of the measuring base parallel to the axis of elongation. The base has a pair of opposed channels extending substantially the length of the measuring base parallel to the axis of elongation. A fixed end stop extends upward from the one end. A measuring stop is slidably connected between the pair of opposed channels of the measuring base. The measuring stop has a channel slide member with two opposed, parallel, channel-engaging edges that are biased to frictionally engage the interior of the opposed channels. Release means is operably connected to the channel slide member for counteracting the bias toward frictional engagement of the interior of said opposed channels. An index panel extends upward from the channel slide member and has an indicating relationship with the sequence of measuring indicia.
REFERENCES:
patent: 226429 (1980-04-01), Varnum
patent: 1555792 (1925-09-01), Souder
patent: 1594255 (1926-07-01), Goldsmith
patent: 1700857 (1929-02-01), Schultz
patent: 4355472 (1982-10-01), Wedge
patent: 4484394 (1984-11-01), Hsia
Graham-Field, Inc., "Grafco Neo-Infantometer", (p. 22 of catalog).
Ellard Instrumentation Ltd., "O'Leary LengthBoards", (brochure).
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