Signals and indicators – Indicators – Operator movable
Patent
1979-02-12
1980-07-22
Watkins, Donald
Signals and indicators
Indicators
Operator movable
116200, G12B 1102
Patent
active
042134161
ABSTRACT:
A manipulating rotary control device wherein a knob is connected to a dial having associated therewith a hub defining a socket for receiving the end of a control shaft, such as the valve shaft, in a domestic range or the like. The knob may be formed of a light-transmitting synthetic resin and may be hollow so as to permit desired aesthetic treatment of the interior thereof. The knob may serve as an insulating element of the assembly permitting the dial to be made of metal as well as of synthetic resin. The knob may be secured to the dial or hub by suitable means such as heat staking, etc. The hub socket may be closed so as to seal out moisture. An indicator may be associated with the knob which may be selectively movable as an incident of movement of the knob toward and from the wall from which the control shaft projects for providing an indication of the position of the control shaft. The knob may include a clear portion for viewing of the indicator in preselected disposition within the knob. A seal may be provided for sealing the interior of the knob relative to the movable indicator.
REFERENCES:
patent: 783210 (1905-02-01), Lewis
patent: 1563635 (1925-12-01), Kasch
patent: 1629891 (1927-05-01), Shaw
patent: 2201540 (1940-05-01), Kauffman
Corr Denis E.
Watkins Donald
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