Floor buffing machine with automatic pad pressure adjustment

Details Floor buffing machine with automatic pad pressure adjustment Floor buffing machine with automatic pad pressure adjustment

1992-04-16

1993-10-19

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Machines

Wiping

15 491, 51177, A47L 1114

Patent

active

052533840

ABSTRACT:
An electric buffing machine and a method buffing waxed floors are disclosed. The buffing machine comprises a molded plastic housing, a foldable handle and a DC drive motor directly driving a buffing pad holder. The pad is movable into and out of engagement with the floor by a pad lifter mechanism which raises and lowers the pad holder along a splined drive shaft of the drive motor. The pad lifter mechanism comprises a reversible motor mounted to the housing and connected to the pad holder by means of a threaded output shaft which supports a lifter arm rotatably connected to the pad holder. Rotation of the threaded shaft in one direction or the other moves the lifter arm into which the shaft is threaded together with the pad holder and pad up or down relative to the floor. By observing the current draw of the drive motor, control of pad pressure may be achieved. The pad holder design provides a directed air flow into the housing to collect dust, dirt and debris generated by the buffing operation.

REFERENCES:
patent: 1688580 (1928-10-01), Gernandt
patent: 1763365 (1930-06-01), Nobbs
patent: 2949619 (1960-08-01), Holt
patent: 3129539 (1964-04-01), Tempero
patent: 3458885 (1969-08-01), Danielsson
patent: 4358868 (1982-11-01), Cook, Jr.
patent: 4365377 (1982-12-01), Todd et al.
patent: 4598440 (1986-07-01), Wilson
patent: 4701970 (1987-10-01), Wilson
patent: 4739534 (1988-04-01), Wilson
patent: 4845798 (1989-07-01), Genovese
patent: 5127124 (1992-07-01), Palmer et al.

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