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US 4,078,601 AGranted
Heating and cooling thermostat with changeover switching operated upon control point adjustment
AssigneeHoneywell Inc.
InventorDonald P. Kolbow
Life of this patent
Estimating the term…
Abstract
A thermostat adapted for controlling heating and cooling apparatuses has a temperature control point adjustment means connected to a changeover switch means whereby upon the adjustment of the temperature control point adjustment means in a first range to select a cooling point, the changeover switch means only connects the thermostat to the cooling apparatus and when the temperature control point adjustment means is in the heating range, the changeover switch means only connects the thermostat to the heating apparatus. The limited range of temperature selection in the first and second range is an energy conservation feature of the thermostat.
Claims13
In a thermostat adapted for controlling heating and cooling apparatuses comprising,
- a base member,
- temperature responsive switch means attached to said base member,
- temperature control point adjustment means mounted on said base member,
- a changeover switch means,
- connection means connecting said control point adjustment means to said switch means to change the operating temperature of said temperature responsive switch means and to said changeover switch means for selectively connecting either the heating apparatus or cooling apparatus to said temperature responsive switch means,
- said changeover switch means, comprising
- switch operating member pivotally connected to said base, said switch operating member having a cam surface cooperating with a drive arm connected to said control point adjustment means, said drive arm upon engaging said cam surface pivots said switch operating member.
4 more elements
A thermostat apparatus adapted for controlling heating apparatus and cooling apparatus, comprising,
- temperature responsive control means responsive to space temperature,
- temperature control point adjustment means having a first series of positions for selecting a heating temperature and a second series of positions for selecting cooling temperature,
- first connection means connecting said control point adjustment means to said temperature control means to adjust the control temperature said temperature responsive control means maintains in the space,
- changeover switch means adapted to selectively connect said temperature responsive control means to control the operation of either the heating apparatus or the cooling apparatus, and
- second connection means connecting said temperature control point adjustment means to said changeover switch means so that when said control point adjustment means is in said first series of positions, said changeover switch means is adapted to connect the heating apparatus to said temperature responsive control means to control the temperature in the space at a selected heating temperature and when said control point adjustment means is in said second series of positions said changeover switch means is adapted to connect the cooling apparatus to said temperature responsive control means to control the temperature in the space at a selected cooling temperature,
- said second connection means comprising
- a switch operating member pivotally connected to a base,
- drive means connected to said temperature control point adjustment means whereupon movement of said adjustment means to either said first or second series of positions, said drive means operates said switch operating member.
5 more elements
A thermostat comprising
- a base adapted to be mounted on a surface in a space wherein the temperature is to be controlled for either cooling or heating,
- a first rotatable post member mounted normal to said base for supporting a bimetal to which a temperature control switch means is attached,
- a second rotatable temperature adjusting post member mounted normal to said base adjacent said first post member,
- drive means connecting said first and second post members so that upon the rotation of said second post member to a selected position, the position of said post member is adjusted to determine the control temperature of said switch means,
- said drive means having a lost motion means to provide for a predetermined angle of movement of said second post member without movement of said first post member, said lost motion means comprising
- a sleeve on said second post member having connection means to said first post member, said sleeve having a detent means therein,
- a key member carried by said second post member, said key is free to move parallel to the axis of said second post member, said key cooperating with said detent means to allow for movement of said second post with respect to said sleeve when said key is in a downward position out of said detent means.
4 more elements
Dependencies are inferred from the claim text.