Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1995-06-07
1997-12-30
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
73295, 73290R, G08B 2100
Patent
active
057035695
ABSTRACT:
Provided is a self-calibrating system which self-calibrates for operation regardless of the particular reservoir or expansion tank, which further detects when a hydraulic fluid system adapted to a turf care machine has developed a leak and which warns the machine operator of such a leak before an appreciable amount of hydraulic fluid is allowed to leak from the system. The system includes a reservoir for holding a quantity of hydraulic fluid. The reservoir is connected via a connecting tube or hose located at the upper-most portion of the reservoir and connected to an expansion tank mounted substantially adjacent to the reservoir. The expansion tank includes a fitting having an elongated tube extending down into the expansion tank. The end of this tube is maintained substantially below the level of hydraulic fluid in the expansion tank during operation of the turf care machine to which it is attached. As the machine is operated, the hydraulic fluid expands with rising temperatures, and the connecting tube communicates the expanding fluid to the expansion tank. When operation of the machine is discontinued the hydraulic fluid contracts as it cools. As the hydraulic fluid contracts, the hydraulic fluid in the expansion tank is automatically drawn by a siphoning action through the elongated tube within the expansion tank through the connecting tube and back into the reservoir. The self-calibrating leak detection system is adaptable to a variety of self propelled machines having hydraulically actuated devices. In particular, significant savings could be gained by the early detection of hydraulic system leaks on large, earth-moving equipment and the like. Further, the self-calibrating hydraulic fluid leak detection system may be retrofit onto existing hydraulic systems by the addition of an expansion tank to the hydraulic system reservoir.
REFERENCES:
patent: 3438247 (1969-04-01), Lotti et al.
patent: 3568705 (1971-03-01), Boyadjieff et al.
patent: 3576959 (1971-05-01), Bogosoff
patent: 3667605 (1972-06-01), Zielinski
patent: 3685531 (1972-08-01), Byford
patent: 3708245 (1973-01-01), King
patent: 4020481 (1977-04-01), Nakagawa
patent: 4057700 (1977-11-01), Nakashima
patent: 4090396 (1978-05-01), O'Brien
patent: 4152925 (1979-05-01), Lindh
patent: 4274328 (1981-06-01), Pedersen
patent: 4522109 (1985-06-01), Marchi et al.
patent: 4522167 (1985-06-01), Hurner
patent: 4549429 (1985-10-01), Kurt
patent: 4563674 (1986-01-01), Kobayashi
patent: 4571987 (1986-02-01), Horner
patent: 4590462 (1986-05-01), Moorehead
patent: 4591837 (1986-05-01), Martinez
patent: 4611620 (1986-09-01), Wang
patent: 4732035 (1988-03-01), Lagergren et al.
patent: 4750775 (1988-06-01), Miller
patent: 4781057 (1988-11-01), Hyfantis, Jr. et al.
patent: 4811601 (1989-03-01), Tolan
patent: 4827762 (1989-05-01), Hasselmann
patent: 4852054 (1989-07-01), Mastandrea
patent: 4961064 (1990-10-01), Hara
patent: 4987769 (1991-01-01), Peacock et al.
patent: 5021665 (1991-06-01), Ames
patent: 5156042 (1992-10-01), Carlin et al.
patent: 5187973 (1993-02-01), Kunze et al.
patent: 5315529 (1994-05-01), Farmer
patent: 5402110 (1995-03-01), Oliver et al.
patent: 5445010 (1995-08-01), Peacock
patent: 5548278 (1996-08-01), Oliver et al.
Bednar Richard D.
Oliver Joseph J.
Young Christopher L.
Hofsass Jeffery
Lieu Julie B.
Ransomes America Corporation
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