Abstract: A system described herein may provide a mechanism for decoupling user interfaces from backend input processing systems by receiving user input that was provided to a user interface, identifying a label (e.g., a label that was defined as being associated with an interactive element via which the user input was received) associated with the user input, and identifying one or more actions to perform based on the received label.

Abstract: A system described herein may provide a mechanism for decoupling user interfaces from backend input processing systems by receiving user input that was provided to a user interface, identifying a label (e.g., a label that was defined as being associated with an interactive element via which the user input was received) associated with the user input, and identifying one or more actions to perform based on the received label.

Abstract: The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.

Abstract: The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.

Abstract: The invention is an improved piezoelectric noise-making and audible signaling device which produces a distinctive 2 KHz tone that is more pronounced and significantly easier to perceive, especially in a noisy environment. The volume of the audible tone is amplified by using two or three sound-amplifying chambers or cavities.

Abstract: A tractor heating system for heating the cabin of a tractor wherein the tractor is carrying a refrigerated trailer. The heating system includes a feed duct in communication with a refer cooling system and the heater of the tractor for communicating heated fluid from the refer cooling system to the heater for heating the tractor cabin. A return duct returns fluid from the tractor heater to the refer cooling system wherein heated fluid from the refer cooling system may be utilized by the tractor heating for heating the cabin of the tractor and also the tractor engine.