Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7313840 | Induction liquid pump and magnetic tank scrubber An induction liquid pump includes a power unit and a circulation unit that are oppositely mountable to a tank with a plurality of fixation units. The liquid pump power unit includes a power induction unit to produce a variable magnetic field. The submersible liquid ... | 01/01/2008 |
| 7231683 | Window cleaning apparatus The present invention discloses an apparatus for cleaning a window of a structure. The window cleaning apparatus includes a guide track mounted on one side of a window frame and a second guide track mounted on a side of the window frame opposite the first guide trac... | 06/19/2007 |
| 7007334 | Cleaning device for the surface of a facade A cleaning device (9) for a facade surface (3) of a building (1), comprising at least one elongate wiper strip unit (10) movable back and forth along at least one guide rail unit (6) by means of a stationarily arranged drive motor ... | 03/07/2006 |
| 6986186 | Window washing system A window washing system for cleaning a window mounted in a dwelling wall having an inner surface and an outer surface includes a window squeegee assembly that is attached to the outer surface. The assembly includes a pair of supports that are each elongated and atta... | 01/17/2006 |
| 6948210 | Automated board eraser An automated erasure system that is suitable for erasure of non-permanent markings from boards is disclosed. The boards being erased can be whiteboards (whether electronic or not) or other boards (e.g., chalkboards). ... | 09/27/2005 |
| 6851156 | Window sky scraper An automatic window cleaning apparatus for use with windows on buildings is disclosed. The apparatus would be an electronic system for automatically cleaning the exterior side of windows in buildings, preferably skyscrapers, which would be operated through a control... | 02/08/2005 |
| 6615439 | Cleaning device for the wings of sliding windows or doors A cleaning device for the wings (1, 2) of sliding windows or doors which overlap each other by their front ends in the closed position and which have edge sections (4, 7, 8, 11; 4', 7', 8', 11') embracing a glasswork (3, 3'), with at least the outer wing ... | 09/09/2003 |
| 5515570 | Manually operated magnetic window wiper A tool for wiping windows by means of a ceramic rectangular permanent magnet, or magnets, which has wiper blades attached. This unit is called the slave unit. On the opposite side of the window surface is a ceramic rectangular permanent magnet or magnets,... | 05/14/1996 |
| 5410774 | Portable vehicle window wiper A portable window wiper for attachment to a vehicle door to reciprocally clear moisture from an adjacent window. The wiper includes a housing having a bracket projecting therefrom which may be inserted between a base of the window and an adjoining portion... | 05/02/1995 |
| 5323508 | Cleaning apparatus for roof glazing Cleaning apparatus for the glazing in an atrium-type roof structure (10) comprises an elongate brush (14) rotating about its axis and mounted at opposite ends in carriages (18, 20) running on guide rails (16, 16A) which can move non-synchronously so as to... | 06/28/1994 |
| 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 |
| 4144091 | Window wipe A window wipe suitable for wiping the outer surface of a windowpane is provided with a magnet on the inner surface of the pane, a magnetized cleaning element on the outer surface of the pane and a container on the outer surface for storing the cleaing ele... | 03/13/1979 |
