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US 4,391,548 AGranted
Coupling device for floor maintenance machines
OwnerTerrance J. Malishinventor
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OwnerTerrance J. Malishinventor
Estimating the term…
A coupling device adapted for use with floor maintenance machines of the type such as floor brushing, buffing, polishing, scrubbing or the like which enables automatic coupling of the maintenance element (i.e. brush, buffing disc or the like) without direct manual implementation thereof. The device includes an annular plate member having a circular opening adapted to receive a circular mounting flange carried by the machine drive shaft with the drive shaft having radially projecting lugs which are adapted to pass through radially extending arcuate recesses formed in the plate member so as to lockably engage behind the plate member. On one side of the plate member a first series of inner peripheral cam-like ramps communicate with one end the arcuate recesses and on the opposite side of the plate member a second series of inner peripheral cam-like ramps communicate with the opposite ends of the arcuate recesses. The second series of cam-like ramps include multiple tapered surfaces which terminate in integral, arcuate segmental webs disposed generally axially opposite associated of the first series of cam-like ramps all of which component parts synergistically coact to enable automatic coupling and decoupling of the maintenance element.
A coupling device adapted for use with floor maintenance machines of the type which detachably mounts a brush or pad holder member for carrying a cleaning element, such as a brush or the like, which machine includes a drive shaft having a plurality of integral, drive lugs projecting radially therefrom, said coupling device comprising a plate member having a generally circular opening extending therethrough, said opening having a plurality of circumferentially spaced, arcuate recess portions adapted to receive said drive lugs therethrough, said plate member including a first series of inner peripheral cam-like ramps which communicate at one end with said recess portions on one side of said plate member, and a second series of inner peripheral cam-like ramps communicating with the opposite ends of said recess portions and on the opposite side of said plate member, said second series of cam-like ramps each including multiple tapered surfaces which terminate in integral, arcuate, segmental web portions disposed generally axially opposite associated of said first series of cam-like ramps which ramps and web portions coact for automatic coupling and de-coupling of said plate member relative to said drive shaft lugs.
Dependencies are inferred from the claim text.