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NORINCO
| NORINCO Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110222964 | HIGHWAY DEVICE, IN PARTICULAR MANHOLE, WITH FRAME AND PLUG WITH BACKWARD MOVEMENT RELATIVE TO THE FRAME TO ENSURE THE CLOSED POSITION OF THE PLUG IN THE FRAME - A manhole includes a frame and plug, which moves backward relative to the frame, to ensure the plug reaches a proper closed position in the frame. A first end of a self-locking arm of the structure is pivotally mounted to the frame, and can slide in a fixed guiding groove. The first end of the arm bears on a fixed stop of the frame during tilting of the plug toward the closed position of the frame. The arm moves the plug backwards and so the plug correctly closes the opening of the frame. | 09-15-2011 |
| 20100178105 | DEVICE FOR A PAVEMENT MANHOLE WITH A SUPPORT FRAME FOR CLOSING A PANEL HINGED ON THE FRAME USING PERMANENT ARTICULATION MEANS - The present invention relates to a device for a pavement manhole with a support frame, for closing a panel hinged on the frame using permanent articulation means. The device is characterised in that the pivot axis ( | 07-15-2010 |
| 20090169299 | DEVICE FOR LOCKING AND UNLOCKING A PLUG ON A FRAME USING A WRENCH - The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug. | 07-02-2009 |
| 20080209680 | Device for articulating a Cover or Lid to a Frame in Particular of a Manhole - A device for articulating a stopper or lid to a frame, in particular of a man hole. The male articulating member may optionally be mounted either removably in its housing of the frame to enable the stopper to be extracted from the frame in its upright position or secured in its housing such that the stopper is not detachable from the frame. | 09-04-2008 |