Weighing scales – Structural installation – Vehicle
Reexamination Certificate
2007-07-24
2007-07-24
Gordon, Stephen (Department: 3612)
Weighing scales
Structural installation
Vehicle
C177S136000, C298S00100V, C701S050000, C702S174000
Reexamination Certificate
active
11033475
ABSTRACT:
To measure the loaded weight of a dump truck, accurately and inexpensively. In a dump truck comprising a set of equalizer bars respectively provided rotatably on the left and right-hand sides of a vehicle body; first vehicle wheels supported respectively by way of first suspension devices on one side of each equalizer bar; second vehicle wheels supported respectively by way of second suspension devices on the other side of each equalizer bar; and third vehicle wheels provided respectively on the left and right-hand sides of the vehicle body separately from the equalizer bars, and being supported respectively by way of third suspension devices; a first load applied to the second suspension device is detected; a second load applied to the third suspension device is detected; the angle of inclination of the vehicle body is detected; and a loaded weight is calculated on the basis of the first and second loads, and the angle of inclination.
REFERENCES:
patent: 4691792 (1987-09-01), Shintani
patent: 5376760 (1994-12-01), Horsley
patent: 2005/0167164 (2005-08-01), Takeda
patent: 61-034425 (1986-02-01), None
Matsuda Kazuo
Takeda Shu
Gordon Stephen
Komatsu Ltd.
Westerman, Hattori, Daniels & Adrian , LLP.
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