# US 2014/0360143 A1 · Canister woodworking filter cleaner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360143 A1 - Document ID: US20140360143A1 - Status: Published application - Kind: A1 - Application number: 13/911,154 - Filed: 2013-06-06 - Published: 2014-12-11 - Earliest claimed: 2013-06-06 - Inventors: Lou Bush - Web page: https://patentgrep.com/patent/US20140360143A1 ## CPC - B01D 46/76: involving vibrations - B01D 46/2411: {Filter cartridges} - B01D 46/4245: {Means for power supply or devices using electrical power in filters or filter elements} - B01D 46/521: {using folded, pleated material} - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A cleaner for a canister woodworking filter of a dust collector includes a vibrating unit magnetically attached to the top of a canister woodworking filter. The vibrating unit may have a sufficiently compact profile (i.e., low height) to avoid interference with the existing handle. The vibrating unit may be controlled by a controller. The controller may include a remote control unit to remotely wirelessly activate the vibrating unit. The controller may be configured to automatically activate the vibrating unit for a determined period of time after the dust collector ceases running. ## Claims ### Claim 1 A cleaner for a canister woodworking filter, said canister woodworking filter including a generally cylindrical pleated dust filter having a top, a longitudinal axis extending through a centerline of the generally cylindrical pleated dust filter having a pleated filter material, an interior space and a cover at the top of said dust filter, said cleaner comprising: a housing having a top surface, a bottom surface and a height measured from the bottom surface to the top surface, an eccentric mass motor contained in said housing, said eccentric mass motor having a shaft substantially in parallel alignment with the longitudinal axis of the dust filter, a power supply for supplying electric power to said eccentric mass motor, and an attachment for securing the bottom surface of the housing to the cover at the top of said dust filter, said eccentric mass motor controllably inducing vibrations in the dust filter to release dust accumulated in the dust filter. ### Claim 2 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, further comprising a control module operably coupled to the power supply, said control module comprising an A/C plug for utility power from a wall outlet, a relay having a first lead, a second lead and a control lead, said relay being switchable between a first state in which the first lead is electrically coupled to the second lead and a second state in which the first lead is not electrically coupled to the second lead in response to signals received via the control lead, a receptacle electrically coupled to the second lead, said receptacle being electrically coupled to the power supply for supplying electric power to said eccentric mass motor, a control circuit electrically coupled to the control lead of the relay, a user interface operably coupled to the control circuit, said user interface providing signals corresponding to user input to the control circuit, and said control circuit controlling the relay in response to the user input. ### Claim 3 (depends on 2) A cleaner for a canister woodworking filter according to claim 2, said user interface comprising a radio receiver operably coupled to said control circuit, and a receiving antenna operably coupled to said radio receiver, and a remote control unit comprising a transmitter, a transmitter control circuit operably coupled to the transmitter, a transmitting antenna operably coupled to the transmitter, and a user selectable switch operably coupled to the transmitter control circuit, said remote control unit transmitting radio frequency signals in response to user activation of the user selectable switch, and said radio receiver receiving said transmitted radio frequency signals via said receiving antenna, and said control circuit controlling the relay in response to the user input. ### Claim 4 (depends on 2) A cleaner for a canister woodworking filter according to claim 2, a potentiometer electrically coupled to the second lead between the second lead and the receptacle, said potentiometer controlling resistance. ### Claim 5 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, said canister woodworking filter further comprising a handle attached to a shaft, said shaft extending through the cover of the dust filter at about the centerline of the dust filter, a portion of the shaft extending above the cover, another portion of the shaft extending into the interior space of the dust filter, and said handle being attached to the portion of the shaft extending above the cover, and a paddle attached to the other portion of the shaft extending into the interior space of the dust filter, said paddle extending radially from the shaft a distance sufficient to reach the pleated filter material, and the handle and the cover being separated by a first distance, and the height of the housing being less than the first distance. ### Claim 6 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, said attachment for securing the bottom surface of the housing to the cover at the top of said dust filter comprising a magnet, and said cover comprising a ferromagnetic material. ### Claim 7 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, said attachment for securing the bottom surface of the housing to the cover at the top of said dust filter comprising a magnet, and said cover comprising a ferrimagnetic material. ### Claim 8 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, said attachment for securing the bottom surface of the housing to the cover at the top of said dust filter comprising a magnet from the group consisting of a samarium-cobalt magnet and a neodymium-iron-boron magnet and said cover comprising a material that is magnetically attracted to said magnet. ### Claim 9 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, said attachment for securing the bottom surface of the housing to the cover at the top of said dust filter being a removable attachment allowing the housing to be removed from the cover. ### Claim 10 (depends on 2) A cleaner for a canister woodworking filter according to claim 2, said canister woodworking filter further comprising a blower driven by a blower motor, and said blower motor receiving electrical power from a power source via an electrical cord, and said control module further comprising a current sensor sensing current in the electrical cord, said current sensor being operably coupled to the control circuit, said control circuit determining if the blower motor is running based upon the sensed current. ### Claim 11 (depends on 10) A cleaner for a canister woodworking filter according to claim 10, further comprising an analog-to-digital converter operably disposed between the current sensor and the control circuit. ### Claim 12 (depends on 10) A cleaner for a canister woodworking filter according to claim 10, the current sensor comprising a hall effect sensor. ### Claim 13 (depends on 10) A cleaner for a canister woodworking filter according to claim 10, the control circuit switching the relay to the first state after said blower motor ceases running and then switching the relay to the second state after a determined period of time after said blower ceases running. ### Claim 14 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, the eccentric mass motor comprising a 12 volt DC eccentric mass motor with a normalized vibration amplitude of at least 25 G and a rated speed of at least 1,000 rpm. ### Claim 15 (depends on 10) A cleaner for a canister woodworking filter according to claim 10, further comprising a mode selector switch operably coupled to said control circuit, said mode selector switch providing a plurality of positions with one position for each of a plurality of modes of operation including a mode of operation in which the eccentric mass motor runs for a determined period of time after the blower motor ceases running. ### Claim 16 A cleaner for a canister woodworking filter, said canister woodworking filter including a generally cylindrical pleated dust filter having a top, a longitudinal axis extending through a centerline of the generally cylindrical pleated dust filter having a pleated filter material, an interior space and a cover at the top of said dust filter, said cleaner comprising: a housing having a top surface, a bottom surface and a height measured from the bottom surface to the top surface, and an eccentric mass motor contained in said housing, said eccentric mass motor having a shaft substantially in parallel alignment with the longitudinal axis of the dust filter, and a power supply for supplying electric power to said eccentric mass motor, and a magnet for securing the bottom surface of the housing to the cover at the top of said dust filter, and said eccentric mass motor controllably inducing vibrations in the dust filter to release dust accumulated in the dust filter, and a control module operably coupled to the power supply, said control module comprising an A/C plug for utility power from a wall outlet, a relay having a first lead, a second lead and a control lead, said relay being switchable between a first state in which the first lead is electrically coupled to the second lead and a second state in which the first lead is not electrically coupled to the second lead in response to signals received via the control lead, a receptacle electrically coupled to the second lead, said receptacle being electrically coupled to the power supply for supplying electric power to said eccentric mass motor, a control circuit electrically coupled to the control lead of the relay, a user interface operably coupled to the control circuit, said user interface providing signals corresponding to user input to the control circuit, and said control circuit controlling the relay in response to the user input, and said canister woodworking filter further comprising a handle attached to a shaft, said shaft extending through the cover of the dust filter at about the centerline of the dust filter, a portion of the shaft extending above the cover, another portion of the shaft extending into the interior space of the dust filter, and said handle being attached to the portion of the shaft extending above the cover, and a paddle attached to the other portion of the shaft extending into the interior space of the dust filter, said paddle extending radially from the shaft a distance sufficient to reach the pleated filter material, and the handle and the cover being separated by a first distance, and the height of the housing being less than the first distance. ### Claim 17 (depends on 16) A cleaner for a canister woodworking filter according to claim 16, said user interface comprising a radio receiver operably coupled to said control circuit, and a receiving antenna operably coupled to said radio receiver, and a remote control unit comprising a transmitter, a transmitter control circuit operably coupled to the transmitter, a transmitting antenna operably coupled to the transmitter, and a user selectable switch operably coupled to the transmitter control circuit, said remote control unit transmitting radio frequency signals in response to user activation of the user selectable switch, and said radio receiver receiving said transmitted radio frequency signals via said receiving antenna, and said control circuit controlling the relay in response to the user input. ### Claim 18 (depends on 16) A cleaner for a canister woodworking filter according to claim 16, a potentiometer electrically coupled to the second lead between the second lead and the receptacle, said potentiometer controlling resistance. ### Claim 19 (depends on 16) A cleaner for a canister woodworking filter according to claim 16, said magnet for securing the bottom surface of the housing to the cover at the top of said dust filter comprising a magnet from the group consisting of a samarium-cobalt magnet and a neodymium-iron-boron magnet and said cover comprising a material that is magnetically attracted to said magnet. ### Claim 20 (depends on 1) A cleaner for a canister woodworking filter according to claim 1, the eccentric mass motor comprising a 12 volt DC eccentric mass motor with a normalized vibration amplitude of at least 25 G and a rated speed of at least 1,000 rpm.