A filter system includes a tube sheet defining a plurality of holes in fluid communication with a plurality of filter bags. The system also includes a rotating assembly having an arm defining one or more outlets to provide pressurized air from an air source toward the tube sheet in response to pulsing one or more actuators. A motor is operably coupled to the stationary assembly and the rotating assembly to rotate the arm about an axis at a preset rotational speed. A controller is operably coupled to the motor and the one or more actuators to provide pulse commands based on a pulse interval and a jog interval. The pulse interval and the jog interval may be determined based on a measured rotational speed of the arm, which may be redetermined during operation.

A filter system includes a tube sheet defining a plurality of holes in fluid communication with a plurality of filter bags. The system also includes a rotating assembly having an arm defining one or more outlets to provide pressurized air from an air source toward the tube sheet in response to pulsing one or more actuators. A motor is operably coupled to the stationary assembly and the rotating assembly to rotate the arm about an axis at a preset rotational speed. A controller is operably coupled to the motor and the one or more actuators to provide pulse commands based on a pulse interval and a jog interval. The pulse interval and the jog interval may be determined based on a measured rotational speed of the arm, which may be redetermined during operation.

A multiply redundant safety system that protects humans and assets while transfer(s)/fuelling of on road/off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles/vessels utilizing Compressed and or Liquefied Gas Fuels/compound(s). Utilizing Natural Gas Chemical Family of Hydrogen/Propane/ethane/ammonia/and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3)/ozone/hydrogen peroxide/peroxide/solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques/machine learning in combination with one or more sensors; in combination with one or more micro switches/actuator(s) combine to detect any leaks/fire(s)/or explosion hazards/vehicle motion/arc's, spark(s)/and other hazards for quickly mitigating/locking out/stopping fueling/gas/transfers/vehicle releasing system(s).

A multiply redundant safety system that protects humans and assets while transfer(s)/fuelling of on road/off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles/vessels utilizing Compressed and or Liquefied Gas Fuels/compound(s). Utilizing Natural Gas Chemical Family of Hydrogen/Propane/ethane/ammonia/and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3)/ozone/hydrogen peroxide/peroxide/solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques/machine learning in combination with one or more sensors; in combination with one or more micro switches/actuator(s) combine to detect any leaks/fire(s)/or explosion hazards/vehicle motion/arc's, spark(s)/and other hazards for quickly mitigating/locking out/stopping fueling/gas/transfers/vehicle releasing system(s).

A multiply redundant safety system that protects humans and assets while transfer(s)/fuelling of on road/off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles/vessels utilizing Compressed and or Liquefied Gas Fuels/compound(s). Utilizing Natural Gas Chemical Family of Hydrogen/Propane/ethane/ammonia/and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3)/ozone/hydrogen peroxide/peroxide/solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques/machine learning in combination with one or more sensors; in combination with one or more micro switches/actuator(s) combine to detect any leaks/fire(s)/or explosion hazards/vehicle motion/arc's, spark(s)/and other hazards for quickly mitigating/locking out/stopping fueling/gas/transfers/vehicle releasing system(s).

Disclosed is a filter system for an additive manufacturing device for purifying a process gas of the additive manufacturing device wherein, in order to purify a volume of process gas during operation, the filter system has at least one permanent filter. The permanent filter is configured so as to be thermally stable in a manner such that during operation, the permanent filter is stable at a temperature of more than 110° C. Further disclosed is an additive manufacturing device as well as an additive manufacturing process.

Disclosed is a filter system for an additive manufacturing device for purifying a process gas of the additive manufacturing device wherein, in order to purify a volume of process gas during operation, the filter system has at least one permanent filter. The permanent filter is configured so as to be thermally stable in a manner such that during operation, the permanent filter is stable at a temperature of more than 110° C. Further disclosed is an additive manufacturing device as well as an additive manufacturing process.

Air cleaner assemblies, related methods, components therefor, and features thereof are described. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. In some examples, a filter cartridge for an air cleaner includes a media pack extending along a longitudinal axis between opposite inlet and outlet flow ends and defining an outer perimeter with opposite straight sides and a first curved end. The filter cartridge can include a seal arrangement circumscribing the media pack outer perimeter, wherein a portion of the seal arrangement extends beyond a first plane defined by the media pack outlet flow end and a portion of the seal arrangement is disposed between the first plane and a second plane defined by the media pack inlet flow end, wherein the seal arrangement is aligned along a third plane disposed at an oblique angle to the first and second planes.

Air cleaner assemblies, related methods, components therefor, and features thereof are described. In depicted examples, the air cleaner assemblies and components optionally use advantageous housing seal features. In some examples, a filter cartridge for an air cleaner includes a media pack extending along a longitudinal axis between opposite inlet and outlet flow ends and defining an outer perimeter with opposite straight sides and a first curved end. The filter cartridge can include a seal arrangement circumscribing the media pack outer perimeter, wherein a portion of the seal arrangement extends beyond a first plane defined by the media pack outlet flow end and a portion of the seal arrangement is disposed between the first plane and a second plane defined by the media pack inlet flow end, wherein the seal arrangement is aligned along a third plane disposed at an oblique angle to the first and second planes.

An apparatus comprises a filtering device which includes a plurality of filtering elements made of a filter material. The apparatus further comprises a cleaning system for periodically cleaning the filtering device in order to remove contaminating particles from the filtering device. The cleaning system has at least one percussion element for applying percussions at least on an impact surface of an intermediate structure, so as to generate, for each percussion, an impact which is able to detach from the filter material a first fraction of the contaminating particles adhering to the filter material and then vibrate the filter material to detach from it further contaminants. The intermediate structure, which is interposed between the percussion element and the filter material, has an inner region delimited at least partly by the impact surface and an outer region which surrounds at least partly the inner region. The intermediate structure has a capacity to absorb the energy deriving from the percussion which is greater in the inner region than in the outer region.