Hook-on grab bucket, in particular motor-driven underwater...

Details Hook-on grab bucket, in particular motor-driven underwater... Hook-on grab bucket, in particular motor-driven underwater...

2007-04-24

2007-04-24

Beach, Thomas A (Department: 3671)

Excavating

Beneath a body of water

With signal, scale, indicator, or inspection means

C037S340000, C037S187000, C414S730000

Reexamination Certificate

active

10886224

ABSTRACT:
A grab bucket, in particular motor-driven underwater grab bucket, has first and second half-scoops. The scoops can be moved relative to on another from an open position into a closed position by a hydraulic cylinder. The opening angle of the half-scoops is monitored by a sensor which is connected to a control and monitoring device. The sensor is integrated in the hydraulic cylinder and generates an actuating-travel signal which corresponds to the actuating travel of the hydraulic cylinder.

REFERENCES:
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patent: 6134815 (2000-10-01), Rohr
patent: 6185493 (2001-02-01), Skinner et al.
patent: 6331772 (2001-12-01), Windte et al.
patent: 2110352 (1972-09-01), None
patent: 196 48 335 (1998-06-01), None
patent: 100 07 433 (2000-09-01), None
patent: 0 937 675 (1999-08-01), None

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