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| Number | Title | Issue Date |
| 4653522 | Ground hydrant and method for operating same The ground hydrant of the present invention includes an outlet nozzle above ground and a drain water collection cylinder located below the frost line of the ground. When the hydrant is shut off, the residual water in the nozzle drains into the ground wate... | 03/31/1987 |
| 4653521 | Freezeless ground hydrant and method for operating same The present invention is for a freezeless ground hydrant having a nozzle above ground and having a main valve adapted to be connected to an underground source of water pressure at a point located below the frost line in the soil. Also underground is a dra... | 03/31/1987 |
| 4606090 | Auxiliary loading dock ramp An auxiliary loading dock ramp is provided which can be securely locked to a conventional ramp so as to increase the overall length of the ramp surfaces thereby lessening the degree of incline of the ramps between a loading dock and a truck or railroad ca... | 08/19/1986 |
| 4582081 | Vacuum breaker The present invention comprises an outer housing and an inner housing having a pressure relief chamber defined therebetween. The inner housing receives fluid and directs it through a pressure outlet opening into the pressure relief chamber. The outer hous... | 04/15/1986 |
| 4554768 | Dock seal with adjustable top seal A loading dock seal with an adjustable top seal for providing a weather-tight seal between a loading access opening of a loading dock and vehicles of various heights which includes a compressible pad means surrounding at least the vertical sides of the op... | 11/26/1985 |
| 4532954 | Wall hydrant A wall hydrant is described herein comprising a hollow tube having an inlet end and outlet end. The inlet end is adapted to be connected to a source of fluid under pressure and has a valve means adjacent its inlet end. The inlet valve means comprises a cy... | 08/06/1985 |
| 4432692 | Article handling apparatus An article handling apparatus includes a guide block which is supported on a base frame with freedom of movement in two dimensions. An article gripping attachment is mounted on the guide block which is further provided with a cam slot for defining the int... | 02/21/1984 |
| 4365452 | Loading dock canopy A loading dock canopy comprising a frame having a top, opposite sides, an inner face, an outer face, and a center access opening adapted to be aligned with the loading access opening of the loading dock. The frame is of resilient construction to permit de... | 12/28/1982 |
| 4316481 | Wall hydrant A wall hydrant is described herein comprising a hollow tube having an inlet end and outlet end. The inlet end is adapted to be connected to a source of fluid under pressure and has a valve means adjacent its inlet end. The valve means comprises a cylindri... | 02/23/1982 |
