Measuring and testing – Instrument proving or calibrating – Speed – velocity – or acceleration
Patent
1995-05-24
1997-08-12
Williams, Hezron E.
Measuring and testing
Instrument proving or calibrating
Speed, velocity, or acceleration
73117, 73123, G01L 500, G01P 2100
Patent
active
056567642
ABSTRACT:
A mobile speedometer tester comprising at least two main wheels rotatably attached to a trailer frame, and a trailer frame. A target disk, pickup and totalizer measure the rate of roller rotation, and bellcranks rotatably mounted to the trailer frame allow the main wheels to be extended and retracted. A brake is provided to stop the rollers from rotating, and the front wheel is retractable by means of an electric motor. The main wheels are quickly and easily removable from the bellcranks. Ramps attached to the trailer frame allow test vehicles to drive up onto the mobile speedometer tester in order to test their speedometers. A motorcycle version allows motorcycle speedometers to be tested. The motorcycle version includes an engine rotatably attached to the trailer frame, an engine drive wheel which imparts rotary motion to one roller, an engine jack to bring the engine drive wheel in and out of contact with a roller, and an auxiliary control panel which allows the motorcycle speedometer test operator to start the engine, and to brake the roller to a halt. An alternate embodiment provides a dynamometer for measuring torque imparted to the rollers by a test vehicle.
REFERENCES:
patent: 2607212 (1952-04-01), Rose
patent: 2781659 (1957-02-01), Parker
patent: 3178927 (1965-04-01), MacMillan
patent: 3435657 (1969-04-01), Weissman
patent: 3602034 (1971-08-01), Powell
patent: 3626766 (1971-12-01), Waldecker
patent: 3940978 (1976-03-01), Akkerman et al.
patent: 4070901 (1978-01-01), McDonald
patent: 4185489 (1980-01-01), Sullivan, Jr.
patent: 4840437 (1989-06-01), Henry et al.
patent: 5010763 (1991-04-01), Schneider
patent: 5027640 (1991-07-01), Hinckley et al.
patent: 5040407 (1991-08-01), Hinckley et al.
patent: 5148703 (1992-09-01), Vaughan et al.
patent: 5269179 (1993-12-01), Vattakattu et al.
patent: 5445013 (1995-08-01), Clayton, Jr. et al.
patent: 5452607 (1995-09-01), Axtell
"Inductor Speedometer/Odometer Testing System Installation and Operating Instructions", Inductor Division Frank L. Wells Company.
Kwok Helen C.
Rooy Paul S.
Williams Hezron E.
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