A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

A dust collector includes a main-body housing and a motor assembly disposed in the main-body housing. The motor assembly includes a blower fan, which is disposed in the interior of the main-body housing; and a suction motor, which rotates the blower fan. The motor assembly generates suction force at a suction port, which fluidly communicates with the interior of the main-body housing. At least first and second air-exhaust passageways are respectively in the up-down direction in the interior of the main-body housing and through which air exhausted from the motor assembly flows.

In an embodiment, a system includes a tool that includes an exhaust port and a vacuum. The vacuum also includes an exhaust intake port configured to couple to the exhaust port of the tool. The exhaust intake port may be configured to receive exhaust from the exhaust port. The vacuum includes a vacuum intake port, a vacuum exhaust port opposed to the vacuum intake port, and a mixing chamber between the vacuum intake port and the vacuum exhaust port. The vacuum intake port, the vacuum exhaust port, and the mixing chamber may all be on a same centerline.

A closure device for closing a particle capture volume, in particular a bag or a container, including an access element with an access element opening for providing an access to the particle capture volume, a closure slide which can be selectively displaced relative to the access element into a release position or into a closure position. In the release position the closure slide releases the access element opening and in the closure position closes the access element opening, and a locking mechanism for locking the closure slide in the closure position with respect to the access element, where the locking mechanism 6 for unlocking requires a defined unlocking element which is separate from the locking mechanism.

A closure device for closing a particle capture volume, in particular a bag or a container, including an access element with an access element opening for providing an access to the particle capture volume, a closure slide which can be selectively displaced relative to the access element into a release position or into a closure position. In the release position the closure slide releases the access element opening and in the closure position closes the access element opening, and a locking mechanism for locking the closure slide in the closure position with respect to the access element, where the locking mechanism 6 for unlocking requires a defined unlocking element which is separate from the locking mechanism.

A debris shield for use in conjunction with a vacuum shroud. The vacuum shroud attachment ring is configured to couple to the vacuum shroud and align its openings with the air intake openings of the vacuum shroud. The interior structure of the invention is such that a hook like structure extends from the opening closest to the vacuum shrouds air intake opening and acts to trap and deflect debris forcing it back into the vacuum shroud. Around the hook like structure there is an air passage configured to provide a continuous airway from the opening nearest where the air intake opening of the vacuum shroud is around to the outer edge of the vacuum shroud attachment ring.

A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.

A surface cleaning apparatus has a cyclone chamber provided in an air flow path. The cyclone chamber has a screen assembly with an outlet section, a longitudinally spaced apart distal section and a longitudinally extending porous section. The outlet section includes a non-porous member extending longitudinally inwardly an outlet section length from an outlet end of the outlet section to a longitudinally inwardly positioned inlet end of the outlet section. The outlet end of the outlet section overlies a cyclone air outlet. The porous section extends longitudinally inwardly from an outlet end of the porous section that is located at the inlet end of the outlet section. The inlet end of the outlet section has a width in a direction transverse to the longitudinal direction that is greater than a width of the outlet end of the porous section in the transverse direction.

A surface cleaning apparatus has a cyclone chamber provided in an air flow path. The cyclone chamber has a screen assembly with an outlet section, a longitudinally spaced apart distal section and a longitudinally extending porous section. The outlet section includes a non-porous member extending longitudinally inwardly an outlet section length from an outlet end of the outlet section to a longitudinally inwardly positioned inlet end of the outlet section. The outlet end of the outlet section overlies a cyclone air outlet. The porous section extends longitudinally inwardly from an outlet end of the porous section that is located at the inlet end of the outlet section. The distal section has a distal section length in the longitudinal direction that is greater than the cyclone outlet port length.

A dust collector (dust extractor) (10) has a wireless communication unit (25; 30; 31; 32; 33; 34; 35; 36; 37) that remotely operates (controls) a dust-collection mechanism disposed in a main body (11) of the dust collector (10). The wireless communication unit of the dust collector (10) may communicate with a paired tool wireless-communication device (2b) associated with a tool (2) so that the dust-collection mechanism of the main body 11 is started and stopped in a linked manner with the starting and stopping of the tool (2), thereby improving ease of operation and work efficiency, because the dust collector (10) automatically turns on and off in coordination with operation of the tool (2).