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| Number | Title | Issue Date |
| 5245873 | Capacitance-type material level indicator and method of operation A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as... | 09/21/1993 |
| 4910878 | Suspended-cable apparatus for measuring level of material in a storage vessel Apparatus for indicating level of material comprises a cable vertically suspended so as to contact and be surrounded by the material. The cable is suspended from a cam follower mechanism that engages a cam coupled to a motor for selectively introducing sl... | 03/27/1990 |
| 4856580 | Heat exchanger A conveying screw having a tubular helical flight attached only at its opposite end portions to a hollow conveying screw body. Heat exchange medium introduced into the hollow body is transferred along the tubular helical flight.... | 08/15/1989 |
| 4810099 | Mixer A mixer includes an elongated flexible sleeve that is supported in a housing in a vertical orientation and has a mixing shaft extending therein with a plurality of blade holders supported on the shaft and each blade holder supports a plurality of blades. ... | 03/07/1989 |
| 4811160 | Capacitance-type material level probe A capacitance probe and method of probe manufacture for material level sensing systems and like applications. The probe includes a probe rod, a tubular guard coaxially surrounding the rod intermediate the rod ends, and insulation material formed as an int... | 03/07/1989 |
| 4800755 | Capacitance-type material level indicator A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as... | 01/31/1989 |
| 4695685 | Rotating paddle bin level indicator Apparatus for indicating the level of flowable material in a storage bin comprising a motor mounted within a protective enclosure and coupled by a shaft to a paddle disposed within the bin to engage material contained therein. When the material reaches th... | 09/22/1987 |
| 4676100 | Capacitance-type material level indicator A system for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as a functio... | 06/30/1987 |
| 4676099 | Suspended-cable apparatus for measuring a preselected condition of material in a vessel Apparatus for indicating a preselected condition of material in a vessel which includes a laid wire cable vertically suspended within the vessel so as to contact and be surrounded by material contained therein. The laid wire cable is suspended by a roller... | 06/30/1987 |
| 4624139 | Capacitance-type material level indicator A system for indicating level of material in a vessel as a function of material capacitance comprising a bridge circuit which includes a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as a function... | 11/25/1986 |
| 4589831 | Removable mold segments for rotary molds A rotary mold having a removable rotary mold segment of truncated sectorial shape having top, bottom, side, and end wall surfaces wherein the top arcuate surface is adapted for molding, and the generally planar bottom surface is connected to the top surfa... | 05/20/1986 |
| 4555941 | Capacitance-type material level indicator A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as... | 12/03/1985 |
| 4549245 | Capacitance-type material level probe and method of manufacture A capacitance probe and method of probe manufacture for material level sensing systems and like applications. The probe includes a probe rod, a tubular guard coaxially surrounding the rod intermediate the rod ends, and insulation material formed as an int... | 10/22/1985 |
| 4499641 | Method of manufacturing capacitance-type material level indicator probe A capacitance probe and method of probe manufacture for material level sensing systems and like applications. The probe includes a probe rod, a tubular guard coaxially surrounding the rod intermediate the rod ends, and insulation material formed as an int... | 02/19/1985 |
| 4499766 | Capacitance-type material level indicator A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as... | 02/19/1985 |
| 4499767 | Capacitance-type material level indicator A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as... | 02/19/1985 |
| 4499640 | Method of manufacturing capacitance-type material level indicator probe A system and probe for indicating the level of material in a vessel as a function of material capacitance comprising a resonant circuit including a capacitance probe adapted to be disposed in a vessel so as to be responsive to variations in capacitance as... | 02/19/1985 |
| 4392032 | Rotating paddle bin level indicator Apparatus for indicating the level of flowable material in a storage bin comprising a motor rotatably suspended by a spring within a protective enclosure and a drive shaft coupled by a ball-and-detent clutch to a paddle disposed within the bin to engage m... | 07/05/1983 |
| 4255859 | Drop-weight material level indicator A drop-weight type material level indicator apparatus, method and system wherein an optical disc rotationally coupled to an idler pulley in a modular sensor unit mounted at the top of a material storage bin generates counting pulses as a cable trained ove... | 03/17/1981 |
