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An automatic bed maker which uses the expansion of inflatable bladder to straighten, align, and tuck-in bed-cover assembly.
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| Number | Title | Issue Date |
| 7289309 | Isolation apparatus The apparatus is intended for disconnection of a live electrical conductor and has an enclosure (3) and two power connections (1, 2) which are passed out of the enclosure (3). A conductor section (7) which connects the two power connectio... | 10/30/2007 |
| 5045652 | Disconnector of gas insulated switchgear A disconnector for a gas insulated switchgear in which the disconnector includes, in a metallic container filled with an insulated gas, a stationary electrode having a contact, a stationary electrode shield electrically connected to the stationary electro... | 09/03/1991 |
| 4434336 | Liquid SF6 interrupter with arc energy driven piston and contact A liquid SF6 circuit interrupter is disclosed which employs only one moving piston, eliminating the need for tie rods used in conventional liquid dielectric interrupters to connect two pistons in tandem, which tie rods were possible paths for f... | 02/28/1984 |
| 4427860 | Oil-insulated switch An oil-immersed switch characterized by movable contacts mounted on a piston for movement in a cylinder for forcing oil or dielectric fluid through stationary contacts for extinguishing any arc during opening and closing of the contacts, and whereby any a... | 01/24/1984 |
| 4288668 | Circuit interrupter using a minimum of dielectric liquid A minimum liquid circuit interrupter provides a relatively remote cooled storage unit for the dielectric liquid and fills a cylinder which is in close proximity to the insulating nozzle of the interrupter, the cylinder being driven at one end by a piston ... | 09/08/1981 |
| 4268733 | Liquid SF6 puffer type circuit interrupter A high voltage, high power circuit interrupter uses liquid SF6 in a puffer type arrangement. The cooperating contacts are surrounded by a nozzle and an upstream and a downstream piston, which are moved by a constant force-operating mechanism, m... | 05/19/1981 |
| 4093837 | Oil circuit-breaker pump-assembly with improved shunting contact structure An improved oil-pumping piston-assembly is provided for an oil-type circuit-interrupter to improve the interrupting performance during low-current conditions, having an improved hydraulic-dashpot action occurring during charging and discharging oil, incor... | 06/06/1978 |
