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US 2017/0291130 A1Published application
Automatic Filter Cleaning System
AssigneeProducteers A/S
InventorHolger Krogsgaard
Life of this patent
Estimating the term…
Abstract
An automatic filter cleaning system e.g for cleaning a filter in a vacuum cleaner. The cleaning system has an electrical motor that drives/rotates, directly/indirectly, a piston which directly/indirectly opens a filter cleaning valve. The filter cleaning valve may open for a filter cleaning back flow air stream that thus cleans the filter. The piston is spring loaded and a piston guide ensures that the energy accumulated in the spring and piston is released during the rotation of the piston, thereby shortly opening the filter cleaning valve.
Claims12
An automatic filter cleaning system comprising:
- an electrical motor configured to drive/rotate, directly or indirectly, a piston configured to control the compression of one or more compression spring(s);
- and
- one or more filter cleaning valve(s) configured to open for one or more filter cleaning back flow air stream(s) to flow into one or more filter(s), where the filter cleaning valve is configured to be activated, directly or indirectly, by the piston and a piston guide, wherein the piston guide and the one or more compression spring(s) are arranged to convert rotary movement of the piston into an axial movement of the piston.
Dependencies are inferred from the claim text.