Communications: electrical – Selective – Having indication or alarm
Patent
1985-09-13
1987-03-10
Rowland, James L.
Communications: electrical
Selective
Having indication or alarm
280407, 280438R, 340686, B60Q 100
Patent
active
046493697
ABSTRACT:
Apparatus for identifying the position of the movable portion of a fifth wheel which is useful on a multi-axle vehicle relative to the fixed rail portion (24) thereof. The apparatus includes sensing element (34) positioned on the movable fifth wheel portion for recognizing the successive, teeth-like elements (22) of the rail portion, and a signal processor (30) which is responsive to the sensing element (34) for determining the direction of movement of the fifth wheel and for counting the number of teeth (22) recognized by the sensing element (34).
REFERENCES:
patent: 2835504 (1958-05-01), Acker
patent: 3112936 (1963-12-01), Cole et al.
patent: 3584899 (1971-06-01), Gottler
patent: 4429892 (1984-02-01), Frampton et al.
patent: 4505344 (1985-03-01), Hobbs et al.
Crowe Dale A.
Lund Paul D.
Walker Robert L.
Partnership of Robert Walker and Paul Lund
Rowland James L.
Tumm Brian R.
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