Abstract:
An evaporator and associated food pan refrigerator, such as sandwich-top refrigerators and those used for salads, seafood, ice cream, condiments, and so forth. The food pan refrigerator includes a number of food pans set into the top surface of the refrigerator. The angled fan housing blows the refrigerated air exiting the evaporator evenly across the bottom of the food pans, resulting in even cooling of all pans. In addition, the angled fans effectively and efficiently circulate the air from the fans to the warmest section in the front of the refrigerator and then to the air return located at the bottom of the evaporator. The result is an improved evaporator and associated food pan refrigerator that cools the food pans more evenly and efficiently than prior food pan refrigerators.
Abstract:
A cryogenic propellant storage tank system and method are disclosed that thermally couple LO2 and LCH4 tanks together by using either a single tank compartmentalized by a common tank wall or two separate tanks that are coupled together with one or more thermal couplers having high thermal conductivity. Cryogenic cooling equipment may be located only in the LO2 tank while the LCH4 is cooled by the LO2 tank interface. Embodiments of the invention may employ both LO2 and LCH4 liquid acquisition devices (LADs) for low-gravity use. In further embodiments, only the LO2 LADs may be integrated with thermal cooling equipment.
Abstract:
A radio frequency (RF) coupler apparatus (312) suited for use in a multi-band wireless communication device (200), has a termination device (316) and couplers (314 and 315). Each of the couplers (314 and 315) has through-path coupling elements (318 and 320) and coupled-path coupling elements (319 and 321). Through-path coupling elements (318 and 320) pass a RF signal that is to be transmitted respective frequency bands (TX BAND 1, TX BAND 2) within which the device (200) operates. Coupled-path coupling elements (319 and 321) couple the RF signals passed by respective through-path coupling elements (318 and 320). The coupled-path coupling elements (319 and 321) and the termination device (316) are coupled in series, thereby permitting compatibilty with a RF power detector (313) that uses a single detection diode (322).