Road structure – process – or apparatus – Apparatus – Automatic control
Patent
1994-12-15
1996-04-30
Britts, Ramon S.
Road structure, process, or apparatus
Apparatus
Automatic control
404101, 404118, 744248R, E01C 1900
Patent
active
055119000
ABSTRACT:
An improved screed control device includes two pairs of interacting cylindrical surfaces for controlling the "angle of attack" or elevation of a screed of a paver, a first pair of the two pairs of interacting surfaces having either right-hand or left-hand threads and the other pair of interacting surfaces having threads with handedness opposite from that of the first pair. A reversing pin is adapted to selectively maintain one pair of the two pairs of interacting surfaces stationary relative to each other as a hand-crank arrangement operationally causes the other pair to threadably interact. Handedness of the control device is accomplished by moving the reversing pin to a different set of co-linearly aligned apertures such that the threadably interacting pair of the two pairs of interacting surfaces are caused to become stationary relative to each other and the stationary pair to become threadably interacting relative to each other. The apertures may be slots with major axes parallel to an longitudinal axis of the device to simplify insertion of the reversing pin. First and second embodiments provide additional arrangements for the two pairs of interacting surfaces.
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Britts Ramon S.
Cedarapids Inc.
O'Connor Pamela A.
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