Abstract: An apparatus and method for reducing surface friction drag on the hull of a surface vessel by entraining air into water flowing in the boundary layer flow along the hull. A hemispherical protrusion creates flow separation by diverting a portion of the water flow away from the surface of the hull, which results in a reduced pressure region downstream from the protrusion. A vent located on the protrusion allow air to flow into the reduced pressure region. The air in the reduced pressure region is entrained into the water due to turbulent mixing from vortices shed on to the rear of the protrusion.
Type:
Grant
Filed:
April 15, 2005
Date of Patent:
May 22, 2007
Assignee:
North Shore Partners
Inventors:
Donald P. Stubblefield, Jerry D. Stubblefield
Abstract: An automated personal pill dispenser has one or more chambers for holding a supply of pills. A feed mechanism is associated with each chamber and is selectively operable to dispense an incremental number of pills from each respective chamber. A programmable controller is coupled to control and operate the feed mechanism. The controller has a timer, a memory and an input means and is programmably operable by the user and/or by remote input from a smart card, PDA or various networks such as one having access to data from a pharmacy. The programming presets at least one of a time and a number of pills to be dispensed from each chamber. The controller operates an alarm to alert the user and operates the feed mechanism to dispense pills at the preset time and number, also detecting the user's access to obtain the dispensed pills.
Abstract: A keypad module for a portable communication device including a housing and plurality of keys that each actuate electronic switches. The keypad includes a keypad inlay having a left side and a right side, means for securing the keypad inlay to the front side of the housing, means for releasing the keypad inlay from the housing. The means for releasing the keypad inlay enables the keypad inlay to be removed from the housing by simultaneously depressing at least two of the plurality of keys.
Type:
Grant
Filed:
September 12, 2003
Date of Patent:
February 6, 2007
Assignee:
Motorola, Inc.
Inventors:
Brian D. Honkala, Ted E. Krakowiak, David R. Zeiger
Abstract: A communication device having a front housing and first and second independent keypad housings having respective keypads functionally connected to the front housing. The front housing has a speaker, a microphone, and a display panel. Each keypad has a key configuration that is different than the other. The front housing, first keypad housing, and second keypad housing are constructed to overlap and stack in a nested configuration in which each of the keypads is concealed by the front housing. The front housing is movable relative to each of the keypad housings from the nested configuration to an extended position in which one of the keypads is exposed and physically accessible by a user.