US4590635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for floor maintenance
Assignee: ELECTRO-DISC CORP
•
Filing: 1984-04-23
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Granted: 1986-05-27
•
Expires: 2004-04-23
Abstract
Abstract A machine for floor maintenance comprising an electric motor in which armature coils are included in a stator and permanent magnets are included in a rotor. The armature coils are disposed substantially radial to the axis of the stator with the axial extent of each coil lesser than the radial extent of each coil, and the permanent magnets of the rotor are disposed substantially radially to the axis of rotation of the rotor with the axial extent of each permanent magnet lesser than the radial extent of each permanent magnet. A three phase switching circuit excites the armature coils in impart rotation to the rotor. As a consequence thereof, the motor has a configuration conforming substantially to the pad or brush of the machine. The pad is attached to the rotor by a pad holder which is formed with a convex surface for engaging the pad. By virtue of this arrangement, increased force from the weight of the machine is applied to the area surrounding the axial opening of the pad with a lesser amount of force from the weight of the machine applied to the circumferential area of the pad.
Inventors
- 👤 Hartwell F. Tucker
- 👤 Jeffrey R. Tucker
- 👤 Dennis Ross
- 👤 Jeffrey G. Knirck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:19
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4002; A47L11/02; A47L11/03; A47L11/10; A47L11/14; A47L11/16; A47L11/164; A47L11/4011; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
93 words
A floor machine comprising: (a) a body; (b) an annular stator supported by said body; (c) a shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; and (d) an annular rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft; (e) said rotor comprising means for activating floor maintenance means, (f) said means for activating floor maintenance means comprises a surface formed with a convex configuration for engaging floor maintenance means.
Claim 2
Dependent Claim
93 words
A floor machine comprising: (a) a body; (b) an annular stator supported by said body; (c) a shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; and (d) an annular rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft; (e) said rotor comprising means for activating floor maintenance means, (f) said means for activating floor maintenance means comprises a surface formed with a convex configuration for engaging floor maintenance means.
Claim 3
Dependent Claim
32 words
A floor machine as claimed in claim 1 wherein said means for activating floor maintenance means includes an integrally formed centering hub extending from said convex surface for centering floor maintenance means.
Claim 4
Dependent Claim
89 words
A floor machine comprising: (a) a body; (b) an annular stator supported by said body; (c) a shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; (d) an annular rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft, (e) said rotor comprising means for activating floor maintenance means; and (f) a handle assembly pivotally attached to said body for angular movement in excess of ninety degrees.
Claim 5
Dependent Claim
89 words
A floor machine comprising: (a) a body; (b) an annular stator supported by said body; (c) a shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; (d) an annular rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft, (e) said rotor comprising means for activating floor maintenance means; and (f) a handle assembly pivotally attached to said body for angular movement in excess of ninety degrees.
Claim 6
Dependent Claim
116 words
A floor machine comprising: (a) a body; (b) an annular stator supported by said body, said stator being formed with annular interlocking means along a peripheral wall thereof; (c) a shaft disposed in and fixed to said stator; (d) an annular rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft, (e) said rotor comprising means for activating said floor maintenance means; and (f) a bumper disposed along said annular interlocking means of said stator and encircling said stator, said bumper being formed with annular interlocking means mating with said annular interlocking means of said stator to removably attach said bumper on said stator.
Claim 7
Dependent Claim
116 words
A floor machine comprising: (a) a body; (b) an annular stator supported by said body, said stator being formed with annular interlocking means along a peripheral wall thereof; (c) a shaft disposed in and fixed to said stator; (d) an annular rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft, (e) said rotor comprising means for activating said floor maintenance means; and (f) a bumper disposed along said annular interlocking means of said stator and encircling said stator, said bumper being formed with annular interlocking means mating with said annular interlocking means of said stator to removably attach said bumper on said stator.
Claim 8
Dependent Claim
16 words
A floor machine as claimed in claim 4 wherein said bumper is made of yieldable material.
Claim 9
Dependent Claim
24 words
A floor machine as claimed in claim 4 wherein said bumper has a contour narrowing at one end thereof to accommodate a vacuum port.
Claim 10
Dependent Claim
38 words
A floor machine as claimed in claim 4 wherein said bumper encircles said stator and extends therebelow to encircle a portion of said rotor to provide a bumper and a dust seal for said rotor and said stator.
Claim 11
Dependent Claim
42 words
A floor machine as claimed in claim 4 wherein said bumper encircles said stator and extends therebelow to encircle a portion of said rotor and extends outwardly as a flared portion from said rotor to provide a bumper and a splash guard.
Claim 12
Dependent Claim
212 words
A floor machine comprising (a) a body; (b) a stator supported by said body; (c) a shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; (d) armature winding supported by said stator concentric therewith, said armature winding including an array of radially disposed coils with the axial extent of said coils less than the radial extent of said coils taken respectively, said armature winding being encapsulated in a resin containing a magnetically conductive filler: (e) a rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft; (f) an array of radially disposed permanent magnets supported by said rotor concentric therewith for concurrent movement, said permanent magnets having alternate magnetic fields in succession with the axial extent of said permanent magnets less than the radial extent of said permanent magnets taken respectively; (g) a plurality of sensors in said stator disposed concentrically with said armature winding and responsive to the rotation of said rotor; and (h) a switching circuit responsive to said sensors and connected to said armature winding for exciting said armature winding to impart rotation to said rotor; (i) said rotor housing comprising means for activating floor maintenance means.
Claim 13
Dependent Claim
212 words
A floor machine comprising (a) a body; (b) a stator supported by said body; (c) a shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; (d) armature winding supported by said stator concentric therewith, said armature winding including an array of radially disposed coils with the axial extent of said coils less than the radial extent of said coils taken respectively, said armature winding being encapsulated in a resin containing a magnetically conductive filler: (e) a rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft; (f) an array of radially disposed permanent magnets supported by said rotor concentric therewith for concurrent movement, said permanent magnets having alternate magnetic fields in succession with the axial extent of said permanent magnets less than the radial extent of said permanent magnets taken respectively; (g) a plurality of sensors in said stator disposed concentrically with said armature winding and responsive to the rotation of said rotor; and (h) a switching circuit responsive to said sensors and connected to said armature winding for exciting said armature winding to impart rotation to said rotor; (i) said rotor housing comprising means for activating floor maintenance means.
Claim 14
Dependent Claim
215 words
A floor machine comprising: (a) a body; (b) a stator supported by said body; (c) A shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; (d) armature winding supported by said stator, concentric therewith, said armature winding including an array of radially disposed coils with the axial extent of said coils less than the radial extent of said coils taken respectively; (e) a rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft; (f) an array of radially disposed permanent magnets supported by said rotor concentric therewith for concurrent movement, said permanent magnets having alternate magnetic fields in succession with the axial extent of said permanent magnets less than the radial extent of said permanent magnets taken respectively; (g) a plurality of sensors in said stator disposed concentrically with said armature winding and responsive to the rotation of said rotor; and (h) a switching circuit responsive to said sensors and connected to said armature winding for exciting said armature winding to impart rotation to said rotor, said switching circuit comprising a power supply, said power supply comprising a rectifier with an LC filter; (i) said rotor comprising means for activating floor maintenance means.
Claim 15
Dependent Claim
215 words
A floor machine comprising: (a) a body; (b) a stator supported by said body; (c) A shaft disposed in and fixed to said stator with the axis thereof coincident with the axis of said stator; (d) armature winding supported by said stator, concentric therewith, said armature winding including an array of radially disposed coils with the axial extent of said coils less than the radial extent of said coils taken respectively; (e) a rotor journalled for rotation about said shaft relative to said stator and having an axis coincident with the axis of said shaft; (f) an array of radially disposed permanent magnets supported by said rotor concentric therewith for concurrent movement, said permanent magnets having alternate magnetic fields in succession with the axial extent of said permanent magnets less than the radial extent of said permanent magnets taken respectively; (g) a plurality of sensors in said stator disposed concentrically with said armature winding and responsive to the rotation of said rotor; and (h) a switching circuit responsive to said sensors and connected to said armature winding for exciting said armature winding to impart rotation to said rotor, said switching circuit comprising a power supply, said power supply comprising a rectifier with an LC filter; (i) said rotor comprising means for activating floor maintenance means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |