摘要:
A pressure responsive control device having a pressure housing assembly defining a pressure chamber, an actuable control fixed to the housing assembly and, a pressure transducer module hermetically closing the pressure chamber. The module includes a snap acting pressure responsive diaphragm, a diaphragm control plate hermetically bonded to the diaphragm outer periphery, and a support member hermetically joined to and supporting the control plate and hermetically joined to the housing assembly. The control plate has a supporting region rigidly supporting the diaphragm and the diaphragm control regions are yielded and deformed relative to the supporting region to position the control regions for stressing the diaphragm to determine the chamber pressure levels at which the diaphragm moves.
摘要:
A water level control device having a cam follower for setting the desired water level setting for the control device and a movable cam member having a cam surface engaging the cam follower to set the same in desired positions, the cam surface having a reset portion for resetting the control device when the reset portion is disposed against the cam follower. The cam member has an integral spring that cooperates with the control device to tend to move the cam member from its resetting position when the reset portion is disposed against the cam follower, the cam member and spring being homogeneous and thereby comprising a one-piece homogeneous structure.
摘要:
A pressure operated water level control device having a movable selector for selecting different water level settings thereof. A heat motor unit is carried by the device and is operatively associated with the selector for moving the selector to a certain low water level setting thereof when the heat motor means is activated.
摘要:
A fluid operated electrical switch construction having a first housing provided with an electrical switch therein and a second housing having an expandible and contractible fluid operated power element therein, the housings being secured together in a predetermined assembled relationship so that a motion transmitting arrangement is disposed in both of the housings and extends between the power element and the switch to transmit movement of the element to the switch to operate the same. The motion transmitting arrangement has a length adjustment unit therein that is adapted to be adjusted by first causing relative movement between the housings while the housings are assembled together but before the same are secured together so that once the adjustment unit has been adjusted to provide the proper length, the housings are secured together in such assembled relation.