Dust collector

The patent applies local quality by making the dust collector's response to signals dependent on the specific characteristics of each signal source. The control portion examines identification information in received signals and selectively activates interlock operation only for signals from registered electric working machines, while ignoring signals from unregistered machines. This localized differentiation resolves the contradiction by maintaining ease of operation for authorized machines while ensuring reliability through selective response.

The patent implements feedback by having the control portion continuously monitor received signals, compare identification information against registered machines, and adjust its operation accordingly. When a signal from a registered machine is detected, the feedback loop triggers interlock operation; when signals from unregistered machines are detected, no action is taken. This feedback mechanism resolves the contradiction by dynamically responding to signal sources based on their identity, ensuring both ease of operation and reliability.

The patent applies universality by designing the control portion to perform multiple functions: receiving signals, extracting identification information, comparing it with registered identification information, and controlling interlock operation. The storage portion also serves dual purposes by both storing identification information and enabling the comparison process. This multi-functionality approach resolves the contradiction by achieving reliable interlock operation through a integrated control system rather than separate complex components.

The patent uses copying by storing identification information from electric working machines in the storage portion. Instead of complex verification mechanisms, the system simply copies and stores the identification information transmitted by each machine, then compares received signals against these stored copies. This simplifying approach resolves the contradiction by achieving reliable identification through straightforward data copying and comparison rather than complex verification protocols.

The patent applies preliminary action by pre-registering identification information from electric working machines that require interlock operation into the storage portion before actual dust collection begins. This preliminary registration creates a reference database that enables rapid verification during operation. When a signal is received, the control portion simply checks if the identification information matches any pre-registered machine, allowing quick and accurate determination of whether interlock operation should commence, thus maintaining productivity while preventing erroneous operations.

The patent uses segmentation by dividing the signal processing into distinct stages: signal reception, identification information extraction, comparison with registered information, and control decision. This segmented approach allows the system to efficiently process signals by breaking down the verification process into manageable steps, maintaining productivity through systematic processing while ensuring erroneous operations are prevented through thorough identification verification at each stage.