US4365377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor polishing machine
Assignee: HB Fuller Co
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Filing: 1981-01-13
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Granted: 1982-12-28
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Expires: 2001-01-13
Abstract
Abstract An apparatus for polishing a floor includes a rotated polishing pad suspended from a housing with a mechanism for maintaining full engagement of the surface of the pad with the floor. This mechanism includes a caster disposed within a centrally-located aperture in the pad and a device, such as a spring, connecting the caster to the housing which increasingly urges the caster and housing away from one another as they progressively approach one another.
Inventors
- 👤 Mike J. Todd
- 👤 Jeffrey A. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:57
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/162; A47L11/4052; A47L11/4058; A47L11/4063; A47L11/4069; A47L11/4075
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A floor polishing machine, comprising: (a) a housing; (b) a pair of coaxial wheels fixed positionally relative to, and rotatably attached rearwardly of, said housing, mounting said housing for movement over a horizontal floor surface, said wheels having peripheral edges engaging the horizontal surface as they rotate; (c) a generally U-shaped movement imparting handle having first and second ends and a bail portion therebetween, each of said handle ends being operatively connected to said housing at the axis of said wheels; (d) a compressible, circular polishing pad, said pad having a floor engagement surface for engaging the floor substantially along the engagement surface's total area and defining a plane generally tangent to said wheels at locations thereon engaging the horizontal surface, said pad further having a circular aperture, coaxial therewith, formed therethrough; (e) means suspending said pad in a fixed position relative to said housing; (f) means for driving said pad rotationally about a generally vertical axis through its center; (g) a caster disposed in said aperture and for movement toward and away from said housing; and (h) means connecting said caster to said housing and for increasingly urging said caster and said housing away from one another as they progressively approach one another.
Claim 2
Dependent Claim
204 words
A floor polishing machine, comprising: (a) a housing; (b) a pair of coaxial wheels fixed positionally relative to, and rotatably attached rearwardly of, said housing, mounting said housing for movement over a horizontal floor surface, said wheels having peripheral edges engaging the horizontal surface as they rotate; (c) a generally U-shaped movement imparting handle having first and second ends and a bail portion therebetween, each of said handle ends being operatively connected to said housing at the axis of said wheels; (d) a compressible, circular polishing pad, said pad having a floor engagement surface for engaging the floor substantially along the engagement surface's total area and defining a plane generally tangent to said wheels at locations thereon engaging the horizontal surface, said pad further having a circular aperture, coaxial therewith, formed therethrough; (e) means suspending said pad in a fixed position relative to said housing; (f) means for driving said pad rotationally about a generally vertical axis through its center; (g) a caster disposed in said aperture and for movement toward and away from said housing; and (h) means connecting said caster to said housing and for increasingly urging said caster and said housing away from one another as they progressively approach one another.
Claim 3
Dependent Claim
25 words
A polishing machine in accordance with claim 1 wherein said handle is connected to said housing for selective pivoting about the axis of said wheels.
Claim 4
Dependent Claim
31 words
A polishing machine in accordance with claim 1 wherein said handle is adjustable longitudinally so that said bail portion is selectively movable toward and away from said axis of said wheels.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |