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| Number | Title | Issue Date |
| 7351269 | Self cleaning filter and vacuum incorporating same A brush configured to move repeatedly over a vacuum filter. The brush will remove dust particles to prevent them from clogging the filter. In the preferred embodiment, the brush is mounted on a revolving shaft. As the shaft turns it moves the bristles of the brush o... | 04/01/2008 |
| 6797046 | Structure of a dust-filtering module of a dust-collecting device An improved structure of a dust-filtering module of a dust-collecting device which is characterized in that the top end of the mounting body is provided with a top mounting ring having an L-shaped cross-section, a fastening structure is formed between the mounting b... | 09/28/2004 |
| 6726734 | Device for deflecting debris from lawnmower air intake An air intake screen is provided for deflecting foreign matter away from an air intake passageway of a lawnmower. The lawnmower includes an engine that draws air through the air intake passageway during the operation thereof. The air intake screen includes a central... | 04/27/2004 |
| 6706084 | Device for deflecting debris from lawnmower air intake A deflector is provided for deflecting foreign matter from the inlet screen of a rotary lawn motor. The rotary lawn motor has an engine that draws air through the inlet screen. The deflector includes an inner element positionable over a center portion of the inlet s... | 03/16/2004 |
| 6432152 | Cleaning arrangement of a sieve An arrangement for cooling the engine of a harvesting vehicle includes a circular sieve or screen mounted for rotation about a fore-and-aft axis and through which air is drawn by a fan which discharges the air through a cooling device. A cleaner in the fo... | 08/13/2002 |
| 6248145 | Cleaner for rotating air-intake filter An agricultural machine has a cooling fan with an intake covered by a filter centered on and rotating about an axis. A cleaning apparatus for the filter has a hood nonrotatable about the axis and engaged over only a small portion of an outer face of the f... | 06/19/2001 |
| 4929348 | Apparatus for carrying out extractions in subterranean well The present invention relates generally to improvements in processes and apparatus for effecting solvent extractions using liquefied gas or gases in the supercritical state as the solvents and specifically to continuous processes for carrying out such ext... | 05/29/1990 |
| 4883506 | Electrostatic powder coating installation and method of operating the same An electrostatic powder coating installation which includes a cabinet for accommodating a device for producing electrostatically charged powder, with a filter strip being disposed in the cabinet at a bottom end thereof. A suction system is provided which ... | 11/28/1989 |
| 4810373 | Apparatus for separating solids from fluids The present invention relates generally to improvements in an apparatus for effecting solvent extractions using liquefied gas or gases in the supercritical state as the solvents and specifically to an apparatus for separating solids from fluids at high pr... | 03/07/1989 |
| 4725365 | Bar screen raking apparatus and method of use A rake apparatus for use with a bar screen in a fluid channel that catches debris whereby the rake apparatus enters the channel with reciprocal movement to remove debris caught on the screen bars. The novel raking apparatus has the ability to encounter an... | 02/16/1988 |
| 4439218 | Screen cleaning means Cleaning mechanism for a screen such as a radiator screen mounted adjacent an air-cooled radiator and air-circulating fan for a water-cooled engine to prevent debris from clogging the air passages of the radiator and including a frame supporting the scree... | 03/27/1984 |
| 4369050 | Self cleaning paper trap A self-cleaning paper trap for use within a dust control system and mounted in the duct to trap sheet materials. The paper trap includes a housing which carries a plurality of spaced grid bars to trap the sheet materials and a wiper bar which is verticall... | 01/18/1983 |
| 4307673 | Spark arresting module A spark-arresting module for disposition in a duct for hot stack gases comprising a rigid frame structured with spaced, parallel bars alternating with spaced, parallel slots, a shaft at the upstream side of the frame and parallel thereto, a plurality of b... | 12/29/1981 |
