Adjustable head assembly for floor burnisher
AssigneeMinuteman International, Inc.
InventorsJoseph Immordino JR., Gary E. Palmer
Life of this patent
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Abstract
The head assembly of a floor burnisher is suspended by a main lift assembly and a fine adjustment assembly. The main lift moves the head assembly between a raised position in which the pad assembly is raised and tilted for access, and a lowered position in which the pad driver is suspended slightly above the floor, ready for use. The fine adjustment assembly permits the operator to control very accurately and conveniently the final operating pressure of the pad when the burnisher is turned on.
Claims8
In a floor burnisher having a wheeled frame and a head assembly including a motor driving a polishing element, a lift mechanism for moving said head assembly between a raised position for transport or storage and a lowered position of readiness, said lift mechanism mounted comprising:
- a main lift assembly mounted to said frame for pivotal motion about a horizontal axis, said main lift assembly pivotally mounted to said head assembly to carry the same;
- and a first counterbalancing mechanism connected between said frame and said main lift assembly to provide a first counterbalancing force on said main lift assembly to offset at least partially the weight of said head assembly;
- a second counterbalancing mechanism including an adjusting mechanism connected between said frame and said main lift assembly to provide a second counterbalancing force on said main lift assembly adding to said first counterbalancing force, said adjusting mechanism adjusting said second counterbalancing force and thereby adjusting the downward force on said head assembly during use when said polishing element is driven in rotation by said motor and creates suction which forces said polishing element into engagement with a floor surface to be burnished.
Dependencies are inferred from the claim text.