Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Diverse paths used to control extent of working member travel
Patent
1988-03-31
1989-05-09
Look, Edward K.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Diverse paths used to control extent of working member travel
91 31, 91 32, 91 33, 91367, 91388, 91511, 91519, 91536, F19B 2502
Patent
active
048278300
ABSTRACT:
A towveyor cart for use in hoisting an object and in particular an object having first and second interconnected portions from a first level to a fully raised level. The towveyor cart has control means which include a main control valve for simultaneously raising the jacks to an intermediate position between the lowermost position and the fully raised position and separate jogging valves for controlling each of the jacks separately between the intermediate and raised positions. In this way, both jacks can be simultaneously rapidly raised to the intermediate position and then independently jogged by the jogging valves to the final fully raised position. Horizontal adjusting means are provided so that a combination of horizontal and vertical adjustment for each jack, independent of the other jack, is obtained. Additionally, the towveyor cart is provided with an improved air reservoir which is mounted beneath the work platform of the cart as opposed to the conventional location which is on the platform. By mounting the air reservoir within the base, the platform or work area of the towveyor cart is unobstructed permitting the operator to more freely move along the base to perform the assembly function.
REFERENCES:
patent: 2519900 (1950-08-01), Geiger et al.
patent: 2994303 (1961-08-01), Robra et al.
patent: 3771802 (1973-11-01), Hiramatu et al.
patent: 4335867 (1982-06-01), Bihlmaier
patent: 4421012 (1983-12-01), Mucheyer et al.
Beleski Donald R.
DelProposto Joseph
American Hydrostatics Manufacturing Inc.
Gossett Dykema
Look Edward K.
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