Abstract: The current application is directed to various types of linear vibrational modules, including linear-resonant vibration modules that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Both linear vibration modules and linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: The current application is directed to various types of linear vibrational modules, including linear-resonant vibration modules that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Both linear vibration modules and linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: The current application is directed to various types of linear vibrational modules, including linear-resonant vibration modules, that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Both linear vibration modules and linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: The current application is directed to various types of linear vibrational modules, including linear-resonant vibration modules, that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Both linear vibration modules and linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: The current application is directed to various types of linear vibrational modules, including linear-resonant vibration modules, that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Both linear vibration modules and linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: The current disclosure is directed to personal vibration appliances, operated either by battery power or wall power, that incorporate a linear-vibration module to generate vibration with frequencies below 40 Hz, between 40 Hz and 110 Hz, and above 110 Hz with forces up to and beyond 15 g. In certain implementations, the frequency and force of vibration may be independently controlled. In certain implementations, the vibrational frequency and/or vibrational power may be correlated to various additional signals, both internal and external, including audio sound signals, light signals, and audiovisual signals. In certain implementations, the vibration appliance features an interchangeable massage piston with interchangeable massage tips and other accessories. Finally, operational characteristics of the personal vibration appliances may be modified by various types of sensor and other feedback signals.

Abstract: The current application is directed to various types of linear vibrational modules, including linear-resonant vibration modules, that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Both linear vibration modules and linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: A compressor housing is provided for a compressor impeller. The compressor housing comprises an outer shell including an outer section, a midsection, and a center section. The midsection of the outer shell forms an upper volute wall portion of the compressor housing, and the center section forms an inlet for the compressor housing. A diffuser is also provided that is comprised of a center section, a base section, and an outer section. The center section of the diffuser has a substantially cylindrical outer edge received within a complementary substantially cylindrical mating surface in the outer shell center section. The diffuser base section has a raised first mating projection for engagement with the first mating surface of the midsection of the outer shell. The diffuser outer section has a raised second mating projection for engagement with a second mating surface of the midsection of the outer shell. A back plate is also provided that is formed of a generally circular structure.

Abstract: A compressor housing is provided for a compressor impeller. The compressor housing comprises an outer shell including an outer section, a midsection, and a center section. The midsection of the outer shell forms an upper volute wall portion of the compressor housing, and the center section forms an inlet for the compressor housing. A diffuser is also provided that is comprised of a center section, a base section, and an outer section. The center section of the diffuser has a substantially cylindrical outer edge received within a complementary substantially cylindrical mating surface in the outer shell center section. The diffuser base section has a raised first mating projection for engagement with the first mating surface of the midsection of the outer shell. The diffuser outer section has a raised second mating projection for engagement with a second mating surface of the midsection of the outer shell. A back plate is also provided that is formed of a generally circular structure.