Land vehicles – Wheeled – Attachment
Patent
1980-04-25
1981-08-18
Peters, Jr., Joseph F.
Land vehicles
Wheeled
Attachment
248354S, B66F 308
Patent
active
042842930
ABSTRACT:
An adjustable stand comprising a hollow cylindrical reservoir (11) mounted on a base (12), a hollow cylindrical piston (10) slidable in the reservoir to define therewith a chamber (16) of variable volume, a closure disk (20) at one end of the piston to divide the chamber into first and second portions, and having an aperture (23) to provide passage between the portions, a load supporting cap (13) at the other end of the piston, a charge in the chamber of particulate loose material capable of granular flow through the passage, the disk being configured to facilitate the flow in one direction and impede the flow in the other direction, an agitator (27) in the piston and cylinder and extending through the aperture for enabling load responsive flow of the material through the passage in the other direction, and a mechanical connection (34, 36) for enabling operation of the agitator from outside the chamber.
REFERENCES:
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patent: 3861648 (1975-01-01), Glassmeyer
patent: 3895682 (1975-07-01), Graham
Peters Jr. Joseph F.
Stack, Jr. Norman L.
Stamness Delmer M.
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