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Class 212/92 - Gravity return


Subclass of Class 212 - Traversing hoists
Definition: Systems of the type in which the hoisting rope moves the
No. of patents: 4
Last issue date: 04/05/1988


NumberTitleIssue Date
4735327Radio controlled downhill skyline logging carriage and system
A skyline logging system which uses an improved carriage which can traverse intermediate supports, which can lift both ends of a load of logs, which has a telescoping center beam to accommodate different lengths of logs, which carries an on-board engine s...
04/05/1988
4456131Remote controlled line locking, slack pulling cable logging carriage
A remote controlled slack pulling log skidding carriage is provided for feeding a slack drag line toward a log to be skidded. A drive sheave rotatably mounted in the carriage is operated by a hydraulic motor. The fluid to operate the motor is stored in on...
06/26/1984
4267932Skyline logging carriage
A carriage is provided for guided movement along a skyline and includes guide structure for supporting a dragline for longitudinal shifting relative to the carriage. A skyline stop is provided for coaction with the carriage to limit downward movement of t...
05/19/1981
4267933Logging carriage
A carriage is provided for guided movement along a skyline and includes guide structure for supporting a dragline for longitudinal shifting relative to the carriage. A skyline stop is provided for coaction with the carriage, a dragline abutment is provide...
05/19/1981
 
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