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US 2003/0192253 A1Published application
Underground gate system
OwnerPaul Miller, Charles Logsdoninventors
Life of this patent
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Abstract
An underground gate system for use with driveways and many other applications. The system includes plural posts which are hydraulically raised and lowered to blocking or open positions. In the up position, the posts stand 18-36 inches tall and include decorative lighting for safety and visibility. In the down position, the gate elements are virtually invisible. A particular hydraulic control system is also disclosed. The system is designed to be controlled from an in-car or in-house location.
Claims8
A gate or blocking system for a driveway or other area comprising:
- at least one post (11) of about 18-36 inches in length installed in an underground location, drive means (50, 51, 52) for moving said post vertically upwardly to a blocking position, in-ground structure comprising a cylinder (21) and an outer casing (31) and a chamber (71), said in-ground structure (21, 31, 71) providing means whereby said post (11) is guided and driven to an upper blocking position.
A method of blocking a driveway or other area comprising the steps of:
- a) providing at least one post which stands vertically in an underground location,
- b) providing drive means for moving said post to an above-ground position when desired,
- c) moving said post to an above-ground and blocking position.
Dependencies are inferred from the claim text.