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US 4,380,846 AGranted
Idler pulley belt drive arrangement for suction cleaner
AssigneeThe Hoover Company
InventorEdgar A. Maurer
Life of this patent
Estimating the term…
Abstract
A driven agitator is powered by a pulley-belt arrangement including an idler pulley. Upon agitator stall condition slippage occurs at the idler pulley, preventing rotor stall of the driving motor.
Claims8
An overload arrangement for a cleaner bottom including;
- (a) an elastomeric stretchable belt extending to a pivoted idler pulley structure,
- (b) a relatively unstretchable belt extending to said idler pulley structure,
- (c) one of said stretchable belt and said relatively unstretchable belt being trained over a driving motor shaft,
- (d) the other of said stretchable belts and unstretchable belt being trained over said agitator whereby a stalled condition at said agitator causes said unstretchable belt to slip on said idler pulley structure to prevent a stall condition to said motor shaft, and
- (e) a pivot for said pivoted idler pulley structure being resiliently mounted relative to said cleaner bottom.
2 more elements
An idler pulley structure for a cleaner including;
- (a) an idler pulley arrangement for training a pair of belts thereon,
- (b) one of said belts extending to a shaft of a motor,
- (c) the other of said belts extending to an agitator for said cleaner,
- (d) said motor being mounted on resilient means so as to allow movement while driving said belts, and
- (e) a bracket directly mounted with said motor, said bracket mounting said idler pulley arrangement to insure good tracking of said motor shaft belt.
2 more elements
An overload arrangement for a cleaner agitator including;
- (a) an elastomeric stretchable belt extending to a pivoted idler pulley structure,
- (b) a relatively unstretchable belt extending to said idler pulley structure,
- (c) one of said stretchable belt and said relatively unstretchable belt being trained over a driving motor shaft,
- (d) the other of said stretchable belt and unstretchable belt being trained over said agitator whereby a stalled condition at said agitator causes said unstretchable belt to slip on said idler pulley structure to prevent a stall condition to said motor shaft,
- (e) said driving motor is resiliently mounted, and
- (f) said idler pulley arrangement is mounted with said motor.
3 more elements
An overload arrangement for a cleaner agitator including;
- (a) an elastomeric stretchable belt extending to a pivoted idler pulley structure,
- (b) a relatively unstretchable belt extending to said idler pulley structure,
- (c) one of said stretchable belt and said relatively unstretchable belt being trained over a driving motor shaft,
- (d) the other of said stretchable belt and unstretchable belt being trained over said agitator whereby a stalled condition at said agitator causes said unstretchable belt to slip on said idler pulley structure to prevent a stall condition to said motor shaft, and
- (e) a bracket extending from said driving motor mounting said idler pulley structure.
2 more elements
An idler pulley structure for a cleaner bottom including;
- (a) an idler pulley arrangement for training a pair of belts thereon,
- (b) one of said belts extending to a shaft of a motor,
- (c) the other of said belts extending to an agitator for said cleaner,
- (d) said motor mounted with said cleaner bottom so as to drive said belts,
- (e) a bracket pivotally mounted relative to said cleaner, said bracket mounting said idler pulley arrangement to insure good tracking of said motor shaft belt, and
- (f) a pivot for pivotally mounting said bracket, said pivot being resiliently mounted relative to said cleaner bottom.
3 more elements
Dependencies are inferred from the claim text.