Machine for floor maintenance

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Description

FIG. 1 is a front top perspective view of the machine for floor maintenance showing our new design.

FIG. 2 is a side elevational view thereof, the opposite side being a mirror image; and

FIG. 3 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
3931659 January 13, 1976 Pfefferkorn et al.
4115890 September 26, 1978 Burgoon
4358868 November 16, 1982 Cook, Jr.
4365377 December 28, 1982 Todd et al.
4409702 October 18, 1983 Brown
Other references
  • Advertisement-Cleancare International-Cleancare Hi-Speed Floor Maintenance-Nov., 1981. Advertisement-Kent-Sep., 1981. Advertisement-Hild Floor Machine-Oct., 1980. Advertisement-General Floorcraft Inc.-Oct., 1981. Advertisement-Surtec-Oct., 1981. Advertisement-Nobles Industries, Inc.-Jun., 1980. Advertisement-NSS-Charger-Jan. 1981. Advertisement-Hoover-Feb., 1982. Advertisement-Cimex International-Oct., 1981. Advertisement-Wetrok Inc.-Mar., 1980. Advertisement-Advance-Wizard 1000-Jan. 9, 1981. Advertisement-Dart-Series 1100/Model 1120-Feb. 16, 1981.
Patent History
Patent number: D282110
Type: Grant
Filed: Aug 17, 1983
Date of Patent: Jan 7, 1986
Inventors: Hartwell F. Tucker (Los Altos, CA), Jeffrey R. Tucker (Mountain View, CA), Dennis W. Ross (San Leandro, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lynn Wilder
Attorney: Jack M. Wiseman
Application Number: 6/523,759
Classifications
Current U.S. Class: Surface Treatment, E.g., Floor, Street, Etc. (D32/15)