Floor polisher
First Claim
1. A drive for a compact rotary floor maintenance device, comprising:
- a motor support base having a depending, annular skirt and a depending hub concentric with said skirt, said base having a motor shaft aperture therein;
a carrier having a generally vertical annular flange and a centrally disposed spindle, said spindle extending into said hub;
means within said hub for supporting said spindle for rotary motion, said carrier and said skirt defining a drive housing within which a liquid lubricant may be disposed;
a ring gear on said annular flange and engageable by a pinion gear secured to a motor shaft extending through the motor shaft aperture;
seal means carried by one of said annular skirt and said flange for sealing the space between said flange and said skirt to prevent leakage of lubricant therethrough; and
breather means carried by said base and extending into said drive housing for communicating said housing with atmosphere, preventing a build up of pressure within the housing during drive operation and for permitting said housing to be stored in any position without leakage of lubricant from said drive housing.
7 Assignments
0 Petitions
Accused Products
Abstract
A compact floor polisher is disclosed including a base supporting an electric motor having a vertically oriented output shaft and driving a circular brush. The base includes a depending annular skirt and a hollow hub. A brush carrier has an annular flange and a spindle rotatably supported by bearings within the hub. The brush carrier and support base define a lubricant housing. A ring gear is formed on the annular flange of the carrier and engaged by a pinion gear secured to the motor output shaft. A seal is disposed between the vertical flange and the annular skirt. A breather passage is defined by the base and extends into the lubricant housing. Baffles direct lubricant into the hub to lubricate the bearings supporting the brush carrier spindle.
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Citations
27 Claims
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1. A drive for a compact rotary floor maintenance device, comprising:
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a motor support base having a depending, annular skirt and a depending hub concentric with said skirt, said base having a motor shaft aperture therein; a carrier having a generally vertical annular flange and a centrally disposed spindle, said spindle extending into said hub; means within said hub for supporting said spindle for rotary motion, said carrier and said skirt defining a drive housing within which a liquid lubricant may be disposed; a ring gear on said annular flange and engageable by a pinion gear secured to a motor shaft extending through the motor shaft aperture; seal means carried by one of said annular skirt and said flange for sealing the space between said flange and said skirt to prevent leakage of lubricant therethrough; and breather means carried by said base and extending into said drive housing for communicating said housing with atmosphere, preventing a build up of pressure within the housing during drive operation and for permitting said housing to be stored in any position without leakage of lubricant from said drive housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An improved compact floor polisher of the type including an electric motor secured to a base plate and having a vertically disposed output shaft, a handle, a polising brush and drive means for interconnecting the output shaft of the motor to the polishing brush, said drive means comprising:
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a brush carrier having a generally vertical annular flange and a vertically extending spindle, said brush being secured to said carrier for rotation therewith, said base plate including a depending skirt concentric with said carrier and surrounding said carrier flange; a hub having a through bore and extending from said base plate, said spindle disposed within said through bore of said hub; bearing means within said hub and connecting said spindle to said hub for rotary motion relative thereto; rotary seal means between said vertical flange and said skirt for sealing the space between said flange and said skirt, said carrier and said base defining a drive housing for containing a liquid lubricant; means within said housing for directing lubricant into said hub to lubricate said bearing means; and a tubular member extending from said base into said housing adjacent said hub, said tubular member defining a breather passage communicating said housing with atmosphere, said tubular member positioned so that said floor polisher may be stored in any position without leakage of lubricant from the housing. - View Dependent Claims (17, 18)
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19. A compact drive for use with a motor having a pinion gear rotated by the motor output shaft, said drive adapted for use in a floor polisher and comprising:
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a base plate to which the motor may be mounted and having a depending, generally circular skirt and a hollow hub concentric with said skirt; a carrier having a peripheral, vertical flange disposed within the skirt and defining a lubricant housing therewith, said carrier including a spindle concentric with the flange and extending within the hub; bearing means within the hub connecting the carrier to the base plate for relative rotation therewith; a ring gear on an inner peripheral surface of said vertical flange, said base plate including a motor shaft aperture therethrough positioned so that the pinion gear on the output shaft will engage the ring gear; a seal supported by said skirt and engaging the outer peripheral surface of the vertical flange; means within said housing for directing lubricant within the housing into the hub to lubricate the bearing means, said lubricant directing means comprising; a first baffle extending radially outwardly from the hub within said housing and terminating adjacent the vertical flange; and a second baffle extending outwardly from the hub and terminating adjacent the skirt, said second baffle positioned circumferentially from the first baffle in the direction of carrier rotation, said first and second baffles defining a reservoir for collection of lubricant and said hub defining an inlet opening between the baffles and communicating the interior of the hub with the housing, said hub defining an outlet communicating the hub interior with the housing, said outlet being positioned opposite of said inlet, said carrier including a bottom wall connecting the vertical flange to the spindle, said second baffle extending from the base plate along said carrier bottom wall, said first baffle extending from the base plate below an upper surface of the vertical flange, and said base plate defining a breather tube extending into the housing adjacent the hub and communicating the housing with atmosphere, said breather tube dimensioned and positioned to permit said housing to be tipped in any position without leakage of lubricant therethrough.
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20. An improved compact floor polisher of the type including an electric motor secured to a base plate and having a vertically disposed output shaft, a handle, a polishing brush and drive means for interconnecting the output shaft of the motor to the polishing brush, said drive means comprising:
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a brush carrier having a generally vertical annular flange and a vertically extending spindle, said brush being secured to said carrier for rotation therewith, said base plate including a depending skirt concentric with said carrier and surrounding said carrier flange; a hub having a through bore and extending from said base plate, said spindle disposed within said through bore of said hub; bearing means within said hub and connecting said spindle to said hub for rotary motion relative thereto; rotary seal means between said vertical flange and said skirt for sealing the space between said flange and said skirt, said carrier and said base defining a drive housing for containing a liquid lubricant; and breather means extending into said housing from said base for communicating said housing with atmosphere, preventing a pressure build up within the housing during drive means operation and for permitting said floor polisher to be stored in any position without leakage of lubricant from said drive housing. - View Dependent Claims (21)
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22. A compact drive for use with a motor having a pinion gear rotated by the motor output shaft, said drive adapted for use in a floor polisher and comprising:
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a base plate to which the motor may be mounted and having a depending, generally circular skirt and a hollow hub concentric with said skirt; a carrier having a peripheral, vertical flange disposed within the skirt and defining a lubricant housing therewith, said carrier including a spindle concentric with the flange and said circular skirt and extending within the hub; bearing means within the hub connecting the carrier to the base plate for relative rotation therewith; a ring gear on an inner peripheral surface of said vertical flange, said base plate including a motor shaft aperture therethrough positioned so that the pinion gear on the output shaft will engage the ring gear; a seal supported by said skirt and engaging the outer peripheral surface of the vertical flange; and breather means extending from said base plate into said lubricant housing adjacent said hub for communicating said housing with atmosphere, preventing a pressure build up within the housing during drive operation and for permitting said drive to be stored in any position without leakage of lubricant from said housing. - View Dependent Claims (23)
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24. An improved drive for a rotary floor treating machine of the type including a base defining a depending skirt and a concentric depending hub, a motor having a vertical output shaft extending through the base offset from said hub, a seal surrounding the shaft, a floor treating element carrier having a spindle disposed within the hub and a vertical flange positioned within the skirt, the flange and skirt defining a lubricant housing, bearing means within the hub for supporting the spindle, and gear means for interconnecting said output shaft to said carrier wherein the improvement comprises:
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a rotary seal carried by one of said skirt and said flange and sealing the space between the flange and skirt; and breather means extending from the base adjacent the hub and into the housing for communicating the housing with atmosphere and permitting the drive to be stored in any position without leakage of lubricant from the housing. - View Dependent Claims (25, 26, 27)
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Specification