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| Number | Title | Issue Date |
| 5845739 | Suspension support device for an outer wall working machine A suspension support device provided movably on the upper surface of a building for suspending, by means of ropes, an outer wall working machine having fitting and moving members which can be fittedly engaged in a pair of guide grooves formed vertically o... | 12/08/1998 |
| 5772170 | Vacuum-suction attachment pad A suction chamber is provided in the rear portion of a pad body remote from an external pad supporting surface. The fore end portion of the pad body facing the pad supporting surface is divided into a plurality of sucking compartments for communication wi... | 06/30/1998 |
| 5738339 | Rope traction device with connected locking units A rope traction device has locking units that include a sheave on which a traction rope is wound. The rope traction device is adapted to be moved along with the traction rope and includes a traction rope inlet for feeding the traction rope to the sheave a... | 04/14/1998 |
| 5685513 | Vacuum-suction attachment pad A suction chamber is provided in the rear portion of a pad body remote from an external pad supporting surface. The fore end portion of the pad body facing the pad supporting surface is divided into a plurality of sucking compartments for communication wi... | 11/11/1997 |
| 5638756 | Rope traction device A rope traction device includes a sheave having an annular rope receiving groove and being driven and rotated with a traction rope received in the rope receiving groove to cause the traction rope to be wound on the sheave and the rope traction device ther... | 06/17/1997 |
| 5626081 | Rope traction device A rope traction device includes a sheave having an annular rope receiving groove and being driven and rotated with a traction rope received in the rope receiving groove to cause the traction rope to be wound on the sheave and the rope traction device ther... | 05/06/1997 |
| 5515790 | Rope traction device A rope traction device includes a sheave having an annular rope receiving groove and being driven and rotated with a traction rope received in the rope receiving groove to cause the traction rope to be wound on the sheave and the rope traction device ther... | 05/14/1996 |
| 5485645 | Outer wall cleaning robot An outer wall cleaning robot includes an arm pivotable about a first rotation axis and a rotational body supported by the arm for pivotal movement about a second rotation axis. The rotational body can be driven independently of a pivotal movement of the a... | 01/23/1996 |
| 5368124 | Device suspending a working cage A device for suspending a working cage includes an arm, a swivel arm mounted rotatably horizontally to the end portion of the arm, a first sheave mounted rotatably horizontally to the arm at a location behind the end portion to which the swivel arm is mou... | 11/29/1994 |
| 5216775 | Automatic squeezee pressing device An automatic squeezee pressing device for pressing a squeezee against a window pane with a constant pressing force comprises a squeezee to be pressed against a window pane for cleaning the window pane, a squeezee moving mechanism for moving the squeezee t... | 06/08/1993 |
| 5020180 | Window-pane cleaning device A window-pane cleaning device for cleaning window-panes of a building is provided in a cleaning unit which is moved along a window of the building. The device includes a squeezee for cleaning a window-pane, an approaching and retraction servo device for m... | 06/04/1991 |
