Communications: electrical – Systems – Timer control
Patent
1983-05-18
1986-10-07
Weldon, Ulysses
Communications: electrical
Systems
Timer control
3403095, 200 35R, 200 38R, G08B 100
Patent
active
046162097
ABSTRACT:
A single timing motor (26) drives a gear box (54) having an output shaft (56) for indexing a ratchet wheel (62) for turning a cam drum (68). One cam track (72) operates a line switch (22) for controlling the program interval "ON" time of the appliance. A second cam track (70) operates a second line switch (40) for controlling the timing motor. A toothless space (66) in the ratchet wheel stalls cam drum advance upon program interval time-out to maintain the timer switch (40) closed to keep the motor running. Output shaft 56 drives a sub-interval cam (80) which cycles a switch (48) for effecting intermittent appliance "ON" time for a minor portion of the sub-interval period to provide a "KEEP-WARM" mode of operation. An alarm bell (100) is sounded by a striker (98) actuated by the sub-interval cam. The operator manually advances the cam drum (68) for de-actuating the timer motor switch (40). A manual mode-selector switch (34) enables by-passing the sub-interval switch (48) to select either the "COOK" only mode of operation or "COOK" and "KEEP-WARM" modes.
REFERENCES:
patent: 3694591 (1972-09-01), Bassett et al.
patent: 3824365 (1974-07-01), Tapper
patent: 4133998 (1979-01-01), Otani
patent: 4153824 (1979-05-01), Blackmond
patent: 4206337 (1980-06-01), Marquis
patent: 4467664 (1984-08-01), Willigman et al.
patent: 4523062 (1985-06-01), Mahon
Eaton Corporation
Grace C. H.
Johnston R. A.
Queen Tyrone
Weldon Ulysses
LandOfFree
"Keep warm" control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with "Keep warm" control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and "Keep warm" control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-644946