Electric vacuum cleaner with window for viewing belt
AssigneeNational Union Electric Corporation
InventorArnold L. Sepke
Life of this patent
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Abstract
An electric vacuum cleaner has a generally opaque housing enclosing a bruch roller rotatable about a horizontal axis, a motor, and a belt or the like extending from the motor to a pulley on or affixed to the brush roller, for driving the brush roller. A transparent window is provided in the top of the housing and aligned with the belt, and highly contrasting markings are provided on the belt, thereby to enable an operator to determine, viewing the belt through the window, the moving condition of the belt.
Claims8
In a vacuum cleaner having a housing enclosing at least upwardly a beater brush rotatable about a horizontal axis, a motor, and a belt transmitting rotary motion from said motor to said beater brush;
- the improvement wherein said housing is opaque for the greater part thereof, and has a transparent window fixedly mounted therein to enable a portion of said belt to be viewed from externally of said housing, said belt having distinctive markings thereon, whereby its speed of movement or lack of movement, and regularity of movement, can be observed through said window.
Dependencies are inferred from the claim text.