Back to results
US 4,416,033 AGranted
Full bag indicator
AssigneeThe Hoover Company
InventorGlenn E. Specht
Life of this patent
Estimating the term…
Abstract
There is provided a full bag indicator which is calibrated by movement of it along the structure it is mounted to, to thereby vary an aperture leading into the full bag indicator.
Claims3
A bag condition indicator for a vacuum cleaner, including;
- (a) a vacuum cleaner shell,
- (b) an aperture in said shell,
- (c) a housing for said bag condition indicator,
- (d) a spring urged piston mounted in said housing such that air may flow between said housing and said piston,
- (e) an aperture in said housing in an air flow path between said shell aperture and said piston,
- (f) said housing being movably mounted on said shell to vary the flow area of one of said apertures to thereby alter the flow rate of atmospheric air passing through said housing aperture.
3 more elements
Dependencies are inferred from the claim text.