Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.

Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.

Abstract: Embodiments disclosed herein relate to methods and apparatus for cell block preparation of cytology specimens. Specific embodiments relate to methods and apparatus for formalin fixed paraffin embedded cell block preparation of cytology specimens.

Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.

Abstract: A handheld mortise forming device includes a base unit having a first support extending parallel to a first axis. The first support includes first and second working ends. A first sidewall and a second sidewall are connected to the first support. One of two connecting units is rotatably mounted to the first sidewall. The other connecting unit is rotatably mounted to the second sidewall. A second support extends parallel to the first axis and is connected to the two connecting units. The second support is rotatable relative to the first and second sidewalls and includes an abutting face. A clamping unit includes a pressing member located on a side of the second support adjacent to the abutting face. The pressing member can clamp lumber. The pressing member is jointly rotatable with the second support and is switchable between the first working end and the second working end.

Abstract: A regenerative variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three phase AC power, and variable frequency, three phase AC power to DC power, and to a second inverter that converts DC power to three phase AC sine wave power. The converter converts single phase AC power to DC power and DC power to single phase AC power, and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a hybrid voltage switching scheme that switches the rectifier according to a unipolar voltage switching scheme through most of each cycle and switches the rectifier according to a bipolar voltage switching scheme around each zero crossing.

Abstract: Embodiments disclosed herein relate to methods and apparatus for cell block preparation of cytology specimens. Specific embodiments relate to methods and apparatus for formal-in fixed paraffin embedded cell block preparation of cytology specimens.

Abstract: A trimmer head having at least two pivoting line holders for holding multiple folded strips of trimming line is presented wherein said pivoting line holders are retained within said housing between said housing and said cover and extend upward through apertures in said cover, said line holders being capable of movement around a vertical axis of rotation, at least three embodiments are disclosed which provide a rounded landing for supporting the inner radius of a folded strip of trimming line, the rounded geometry of the landing prevents line stress and breakage, the various embodiments include a pivot post having two parallel straight through holes with a rounded vertical wall between the through holes, a single open passageway having a center metal post, and a single open passageway having a series of at least two metal pins through the center of the passageway.

Abstract: A regenerative variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three phase AC power, and variable frequency, three phase AC power to DC power, and to a second inverter that converts DC power to three phase AC sine wave power. The converter converts single phase AC power to DC power and DC power to single phase AC power, and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a hybrid voltage switching scheme that switches the rectifier according to a unipolar voltage switching scheme through most of each cycle and switches the rectifier according to a bipolar voltage switching scheme around each zero crossing.

Abstract: A multi-function mortise/tenon includes a chassis including a placement portion for placing a work piece horizontally/vertically and at least one transverse sliding rod. A work table includes a first base member, a second base member and a lift/lower platform provided between the first and second base members. The lift/lower platform and the first and second base members are driven to slide with respect to the chassis transversely/longitudinally. The lift/lower platform is driven to lift/lower with respect to the chassis. A guiding device is installed to the at least one transverse sliding rod slideably and transversely and is coupled to the work table which is driven by the guiding device to slide with respect to the chassis transversely/longitudinally.

Abstract: An operation device includes a connecting member mounted on and moved with a working device of a tenoner. A positioning mechanism is mounted on and moved with the connecting member and includes a tube mounted on the connecting member and adapted to be fixed at various positions, an elastic member and a shaft retained in a hollow of the tube. The shaft includes an end extended outside of the tube and a roller mounted on the end and engaged with a guiding member. The elastic member is disposed between the tube and the shaft and selectively depressed such that the elastic member enables the shaft to movably engage with an undulated edge of the guiding member in a quick and accurate manner.

Abstract: A guiding device for a tenoner includes a mounting member for mounting the guiding device on the tenoner and for releasably engaging with a plurality of guide members. The mounting member includes a recess inset on a lateral side thereof. Each guide member includes an engaging section and a guiding section, and the engaging section is moveably engaged in the recess and is adapted to be fixed at various positions.

Abstract: In one aspect, a computing apparatus includes: a transaction handler to process transactions; a data warehouse to store transaction data recording the transactions processed at the transaction handler; a profile generator to generate, based on the transaction data, a profile including a plurality of values representing aggregated spending in various spending areas to summarize transactions in a geographical area; and a portal to receive advertisement data from an advertiser and to create an advertisement campaign based on the profile to deliver advertisements to users in the geographical area on behalf of the advertiser using one or more media channels.

Abstract: A mortise/tenon machine has a base which includes two side plates, a guiding plate installed between the side plates transversely and horizontally, numbers of openings formed on a side of the guiding plate, and a rail member installed between the side plates and in the same horizontal position of the guiding plate. A workpiece is slideably disposed on the openings. A sliding base is slideably mounted on the rail member. A working platform includes a bit installed at a first end thereof, with the bit extending from a desired opening, and with another end of the working platform longitudinally disposed on the sliding base.

Abstract: A guiding device for a tenoner includes a mounting member for mounting the guiding device on the tenoner and for releasably engaging with a plurality of guide members. The mounting member includes a recess inset on a lateral side thereof. Each guide member includes an engaging section and a guiding section, and the engaging section is moveably engaged in the recess and is adapted to be fixed at various positions.

Abstract: Embodiments of the present invention enable an image based controller to control and manipulate objects with simple point-and-capture operations via images captured by a camera enhanced mobile device. Powered by this technology, a user is able to complete many complicated control tasks via guided control of objects without utilizing laser pointers, IR transmitters, mini-projectors, or bar code tagging and/or customized wall paper are not needed for the environment control. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

Abstract: A shaper guard includes a fixture assembly having a sleeve adapted to be statically fixed on a shaper and a rotating member pivotally connected with the sleeve. A first guard panel has a connecting portion connected with the sleeve. A second guard panel has a connecting portion connected with the rotating member and is pivotable in concert with the rotating member with respect to the sleeve and the first guard panel. The second guard panel is biasable by the workpiece fabricated on the shaper. The shaper guard has a simple structure.