Abstract: The Continuous Aimpoint Tracking System is comprised of a position detection device (PDD) and a laser pointing device (LPD) that projects an infrared crosshair onto the PDD. The PDD is coupled to a computer and comprises a multitude of photodiodes and associated circuits, the photodiodes being evenly spaced and arranged to form a frame that can be mounted on the computer so as to surround the computer video display. When a “shot” is fired from the LPD, the crosshair projection is interrupted briefly. The PDD determines the position of the four crosshair intersections and reports them to the computer which, in response, generates the video signals that form the resolved aimpoint on the screen, matching the LPD aimpoint to the video image. Further, the tracking system determines the rotation of the LPD over a range of at least 10 degrees clockwise or counter-clockwise.

Abstract: The present invention discloses methods and systems for providing education at a point of need. The invention includes creating granules of educational material, associating educational credits with the granules of educational material, receiving a request for at least one of the granules of educational material from the point of need, responding to the request by electronically delivering at least one of the granules of educational material to the point of need, and recording educational credits based on at least one of the granules of educational material delivered to the point of need.

Abstract: An infant simulator with a neck linkage connecting the head to the torso which includes at least (a) a longitudinally extending central shaft fixedly attached to the torso proximate the lower end of the central shaft, (b) a socket fixedly attached to the head, (c) a ball fixedly attached to the central shaft and pivotally captured within the socket for permitting pivoting of the socket relative to the central shaft as between a longitudinally aligned central rest position and a longitudinally angled position, and (d) preferably a spring coaxially positioned around the central shaft and captured between the socket and the upper end of the central shaft, whereby the spring biases the socket into the longitudinally aligned central rest position.

Abstract: A leg model, designed to teach endoscopic saphenous vein harvesting, is provided that accurately models the anatomy of the saphenous vein in the human thigh, and closely approximates the subcutaneous tissues in a human. The subcutaneous tissue is formulated and manufactured such that the saphenous vein adheres to the subcutaneous tissue to simulate the adhesion in a human leg. The model includes a reusable base and a replaceable single use insert. The base is size and configured to receive the insert. The tray can include a slit located at a point along its length that permits the ends of the tray to rotate about the slit so that the ends can be bent with respect to one another.

Abstract: This interconnection module for the base of an electronic device casing carries out the transfer, at the faces of the printed circuit boards (4, 5) supporting the components of the device housed in the casing, of a field of connection points with the external environment of the casing embodied by the rear ends of the pins of a semi-connector fixed to the back of the casing while still retaining the compactness of the casing despite a very large number of connection points with the external environment of the casing (several hundreds of them). This module takes the form of a three-panel structure with a central panel 7 fixed to the rear ends of the pins of the semi-connector (3) mounted on the back of the casing and two side panels (8, 9) folded and placed flat against each other, joined to the longitudinal edges of the central panel (7) by flexible printed circuit elements (10, 11) and supporting the field of connection points transferred to the level of the faces of the boards (4,5) of the electronic device.

Abstract: An electrical junction box that improves the reliability of the electrical connections formed therein by avoiding of damage to the fork shaped terminals in the connector block by preventing the invasion of foreign objects. A shutter cover is located along the front and rear walls of the connector block to expose and cover slits which are formed at specific intervals on front and rear walls of the connector block. The shutter cover is constructed from two comb shaped side members having alternating open portions and solid portions, and a connecting portion that joins one edge of each side member. The shutter cover is attached at a position where solid portions cover the slits of the connector block before the connector block is inserted into the connector receptacle of the upper case. The complete insertion of the connector block into the connector receptacle results in the shutter cover moving to a position that aligns open portions to the slits, thus allowing the insertion of busbars into the slits.

Abstract: A system for dissipating static electric charge from electronics on a circuit board as the board is inserted into the enclosure, the system comprising one or more elastic, deformable and electrically conductive gaskets mounted within the enclosure for engaging ground pins on the circuit board.

Abstract: A power inlet socket includes a socket body; live and neutral terminals provided on the socket body, and each having a first pin connected to the power plug and a second pin soldered on the substrate. A ground terminal is provided between the live terminal and the neutral terminal of the socket body; and a ground member is connected to the ground terminal and soldered on the substrate at opposite sides of the socket body. The socket body has a cavity formed with a bottom wall, opposite side walls, a top wall, and a rear wall, and which is open at one side thereof. The ground member is structured to connect the ground terminal at the rear wall and is forked so as to branch from the connection to the ground terminal to surround the upper wall and the opposite side walls.

Abstract: An aircraft battery lockout device is used to isolate the connector assembly for the aircraft's wiring harness from the battery power receptacle. In one embodiment the device comprises a cover, lock, and insulative material. The cover is locked onto the battery power receptacle. The insulative material provides electrical isolation between the locking device and the battery power receptacle. In a second embodiment the device is locked onto the connector assembly.

Abstract: An electric connector (2, 2?) having an insulating casing (4) defining a number of cavities for housing respective electric terminals and having axes parallel to a first direction (A) in which the connector (2, 2?) is coupled to a complementary connector (3); a slide (16) fitted to the casing (4) to slide in a second direction (B) perpendicular to the first direction (A), and having cam-type first engaging members (22) for receiving respective second engaging members (23) on the complementary connector (3) to produce a relative coupling movement of the connectors (2, 2?; 3) in the first direction (A) when the slide (16) is moved in the second direction (B) into a fully assembled position with respect to the casing (4); and retaining means (40, 41, 62) for keeping the slide (16) partly connected to the casing (4); the retaining means (40, 41, 62) being selectively deactivated when coupling the connector (2, 2?) to the complementary connector (3).

Abstract: A connector housing has a longitudinal axis and includes a first housing portion, having a front end face and a rear end, and at least two accommodation chambers extending parallel to the longitudinal axis, and receiving respectively an electrical contact element, and having a connector tab. The accommodation chambers have, respectively, an insertion opening for a mating contact element and an exiting opening for the connector tab, open to the front end face. An elastic locking arm is provided for each accommodation chamber for retaining the contact element in the accommodation chamber. A second housing portion is formed integrally with the first housing portion and forms an accommodation chamber, into which a portion of a housing of a mating connector can be inserted. The second housing portion has contact elements having female contact terminals, which can be electrically connected to the contact elements.

Abstract: There is provided electrical contact for circuit boards. Each leg of the pin section has a deformable segment that can expand or contract along the direction of the leg to alleviate stress created by relative movement of printed circuit boards and/or off-board components interconnected thereby. The deformable segments have members that project in opposing directions relative to the direction of the leg, so that the segments are symmetrical. In one embodiment, each leg has a deformable segment having a outwardly curved shape. In another embodiment, each leg has a deformable segment in the shape of a rectangular frame. The deformable segments define at least one opening where the two legs of the pin section are not overlapping, which breaks the capillary flow of solder between the legs. The amount of solder that flows into the electrical contact is selectively controlled by the selected placement of the deformable segments.

Abstract: A card edge connector is provided, and comprises a first insulating housing, a second insulating housing, a pair of latches and a plurality of conductive terminals. The first insulating housing comprises a first elongated base and a pair of supporting beams. Each of the supporting beams comprises a first sliding portion. The second insulating housing comprises a pair of second sliding portions and a second elongated base with a slot and a guiding block. The second sliding portions connect with the first sliding portions. The latches are pivotally connected to the supporting beams respectively. The conductive terminals, comprising a guiding portion and a contact portion, are disposed in and through the first elongated base. When an electronic card is inserted into the slot, the relative sliding between the guiding block and the guiding portion determines if the contact portion is in contact with the electronic card inserted in the slot.

Abstract: Each terminal (8) includes an upper arm portion (9), a middle arm portion (10), and a lower arm portion (11). A cam portion of the pressing portion member is supported and guided between the upper arm portion and the middle arm portion, so that the pressing portion member is movable between an open position and a closed position. A flat cable C is inserted between the middle arm portion and the lower arm portion. When the pressing portion member moves, the middle arm portion is pushed, so that the flat cable and a connecting portion of the middle arm portion are pressed and contacted. The lower arm portion (11) has a held portion (11A) at a base portion thereof to be held with a housing. A flexible portion (13) is formed at a base portion of the upper arm portion extending upwardly from the base portion of the lower arm portion.

Abstract: An electrical connector includes a first cable contact with a mating surface and a retaining surface, a housing, a retaining device, and at least one groove. The housing defines a first passage for receiving the first cable contact, a second passage for mating with a portion of a second cable contact, and an opening which extends to one end of the first passage. The retaining device is mounted in the first passage and engages with at least a portion of the retaining surface of the first cable contact to detachably retain the first cable contact in the first passage. The groove is formed in the retaining surface of the first cable contact. The opening in the housing is in communication with the groove.

Abstract: A seismic cable coupling comprising connector body, a coupling ring is rotatably mounted on the connector body. The coupling ring includes a ring body having a first longitudinal projection and a second longitudinal projection, the first longitudinal projection having an interior surface including a first angled groove, the second longitudinal projection having an exterior surface including a first raised stud. The coupling ring is a hermaphrodite coupling ring that mates with a coupling ring having a substantially identical ring body.

Abstract: A connector assembly has a slide mechanism for releasably securing and locking together a first connector body and a second connector body. To initially connect together the first and second connector bodies, mounting tabs and lock tabs of the second connector body are disposed in corresponding mounting slots and lock tab slots, respectively, in the first connector body. To releasably lock the connector bodies together, an arm of the slide mechanism is disposed in a channel of the first connector body with a portion of the arm overlying the lock tabs of the second connector body to prevent withdrawal of the lock tabs from the lock tab slots. Thus, removal of the second connector body from the first connector body is prevented while the slide mechanism overlies the lock tabs.

Abstract: An electrical connector assembly comprises a shroud and a connector including an insulating body, parallel conductors, two positioning devices, front and rear housings coupled by soldering, a base, upper and lower holding plates, and a plastic case having a top latch for releasably fastening the shroud. The body comprises a forward extension and two sidewalls each including an upper groove extended toward the extension, a lower opening with either positioning device fastened in the upper groove and the lower opening, and two outer recesses with ends of the upper holding plate fastened in the upper recesses and ends of the lower holding plate fastened in the lower recesses. The invention can effect a high quality signal transmission and substantially eliminate EMI during operation.

Abstract: A device for holding the plugs of power tool cords and extension cords in electric contact having a C-shaped collar on each end of a rigid rod. Attached to each collar is a flexible band with complementary strip of separable adhesive material. When power tool cords and extension cords are plugged together and when the cords are placed in the collars, the collars abut the plugs. Wrapping the bands around their respective collars and pressing the adhesive strips together secures the cords in the collars. If a cord is jerked, the plugs will not lose electric contact, rather, the plugs will remain in contact and will move as a unit with this retention device.

Abstract: A return pad cable connector, in accordance with the present disclosure, for use with a disposable return pad, includes a cord having a conductive wire disposed therethrough which conductive wire interconnects the return pad cable connector to an electrosurgical energy source. The return pad clamp further includes a connector operatively coupled to the cord, the connector having a conductive surface which is selectively engageable with a corresponding conductive surface disposed on the return pad, the conductive surface of the connector including a conductive adhesive disposed thereon and a non-conductive adhesive disposed above the periphery of the conductive surface of the connector for engagement with a corresponding non-conductive adhesive disposed above the periphery of the conductive surface of the return pad. The connector can include a magnet for magnetically coupling the connector to the conductive surface disposed on the return pad.

Abstract: A guide module is provided for connecting a primary circuit board and a secondary circuit board to a common backplane circuit board. The module includes a body that has opposed top and bottom surfaces. A locating feature, on one of the body top and bottom surfaces, establishes a stack height for the secondary circuit board with respect to the primary circuit board. The guide module includes a front face defining a plane that is aligned perpendicular to a mating direction of the primary and secondary boards to the backplane board. The locating feature includes a raised fitting that has a centering rib on an outer perimeter thereof. The raised fitting is received in an attachment hole in the secondary circuit board. The locating feature also includes a boss that has an upper surface upon which the secondary circuit board rests when coupled to the primary circuit board. The upper surface of the boss establishes the stack height.

Abstract: A soldering structure between a tab of a bus bar and a printed substrate is disclosed to provide a soldering structure between a tab of a bus bar and a printed substrate that causes no crack. An electrical conductive material is formed on a printed substrate. A tab through-hole is provide to penetrate the electrical conductive material and printed substrate. A tab formed by bending a body of the bus bar enters the tab through-hole. A periphery of the tab and the electrical conductive material are interconnected by soldering. A stress-absorbing aperture or recess is provided in an insulation plate on which the body of the bus bar is mounted. The stress-absorbing aperture or recess can absorb an axial stress caused in the tab.

Abstract: A kit for marking a predetermined position of at least one wire connected to an electronic device includes at least one male plug that has an elongated prong section integral with the body. The prong section includes an end portion spaced forwardly of the body and is removably positionable into an input jack of an electronic device. The rear end portion of the body has indicia thereon unique to a select input jack. The kit further includes at least one female plug that has a groove formed therein and extends along the longitudinal axis thereof for receiving a male end portion of a wire when removed from an input jack. The body further has a visible front end portion provided with indicia thereon wherein the front end portion indicia of the female plug corresponds to the rear end portion indicia of the male plug so that a user can identify a select input jack for receiving a corresponding wire.

Abstract: A device includes a housing assembly that has a first housing member having an inner periphery defining an opening and a second housing member having an outer periphery. The second housing member is mounted within the opening such that the outer periphery and the inner periphery define a contact slot therebetween. A contact member extends through and away from the contact slot. The contact member is captured in the contact slot by the first and second housing members.

Abstract: Various forms of ceiling fan with easy install features are disclosed. The fans include an electrical quick connect device. The quick connect device includes a plug/receptacle configuration enabling the fan to easily connect to an electricity supply while providing the gravitational and rotational support required by the fan.

Abstract: Systems and methods for operatively connecting processor banks in large computer systems are disclosed herein. In one embodiment, a computer system includes a first bank of processors, a second bank of processors spaced apart from the first bank of processors, and a connector assembly configured to operatively connect at least a portion of the first bank of processors to at least a portion of the second bank of processors. The connector assembly can include a first connector unit having a plurality of first connector sets and a second connector unit having a plurality of corresponding second connector sets. At least one of the first and second connector units is movable relative to the other one of the first and second connector units to at least approximately concurrently engage the plurality of first connector sets with the plurality of corresponding second connector sets.

Abstract: A multi-layer connector assembly for computer audio signal transmissions includes a plastic housing, two terminal sets and a metal outer housing. The plastic housing is consisted of a plastic body and a terminal stand. The invention is characterized that, the plastic body has an obverse side thereof for installing signal connecting caps having distinct colors serving for identification purposes, and the terminal stand is provided with two symmetrical terminal sets that are bent and arranged in certain manners, thereby reducing a height of the connector assembly by 3 mm.

Abstract: A card-securing device has a plate body for securing a card to a printed circuit board. The plate body includes a main plate, and a pair of side-securing plates and an end-securing plate which extend transversely from the main plate. Each of the side-securing plates and the end-securing plate has a base portion connected to the main plate, a neck portion extending and reduced in length from the corresponding base portion, and a tab portion bent and extending from the corresponding neck portion through the printed circuit board to anchor on a bottom surface of the printed circuit board.

Abstract: A bulkhead connector for connecting to a transmission line comprising a rear portion mounted within an opening in a bulkhead with a first end including first and second threads on a first side of the bulkhead and a second end extending through the opening to a second opposing side of the bulkhead. A front connector body and a front shell assembly are threadably attached to the rear portion with an insulator sleeve positioned between them. The front shell assembly includes a front shell with threads for attaching to the rear portion and a center conductor mounted within an insulator. The insulator is mounted within a central opening of the front shell and electrically isolates the center conductor from the front shell. The second end of the rear portion including threads received within the opening in the bulkhead.

Abstract: A coaxial electrical connector is comprised of an outer conductor (11) having a cylindrical fitting section (14) to fit onto a counter connector (60), a dielectric (12) placed in the outer conductor (11) and a center conductor (13) which is held by the dielectric (12). It further includes a cover section (16) to cover the other opened end of the cylindrical fitting section (14), a pair of arms (15) which extend in the radial direction from the cylindrical fitting section, and a surrounding section (17) to surround a cable C and the arms. Narrowing sections (15B) which have smaller distance from each other than the distance between the pair of arms (15) are provided at the boundary portion between the cylindrical fitting section (14) and the pair of arms (15).

Abstract: A crimp connector includes an electrically conductive curved member having an inner surface and a leading edge extending away from and back toward the inner surface. The leading edge, curved member, and inner surface define a first volume for receiving a conductive element. The electrically conductive member, in response to an external crimping force, is configured to cause the leading edge to contact and move along the inner surface until the first volume is substantially the same as a second volume defined by the portion of the conductive element received within the first volume.

Abstract: An effective high frequency shielded telecommunication connector system is provided. In particular, a connector shield for covering an access aperture in a shielded enclosure is provided. The connector shield is formed from an electrically conductive material, and provides one or more cable apertures to permit one or more cables to exit the interior of a shielded enclosure. The maximum linear dimensions of any one cable aperture is limited, to eliminate or attenuate the leakage of electromagnetic radiation from an interior of the shielded enclosure. Mounting elements are provided to interconnect the connector shield to the template of the shielded cabinet, and to prevent gaps between the access aperture and its connector shield.

Abstract: The present invention provides a shielded shell for an electronic connector. The shielded shell comprises an exterior shielded body and an interior shielded body which is received in the exterior shielded body and receives an insulating body with terminals. There is a plurality of elastic slices formed on the interior shielded body, and a plurality of holes provided in the exterior shielded body to receive the free ends of the elastic slices of the interior shielded body. An engaging hole is formed at each board extending from each lateral side of the exterior shielded body. A plurality of tabs is formed on a back panel of the exterior shielded body; a block is projected from the tab to engage with the engaging hole. Therefore, the two-layered shielded shell provides a reinforced force in order to engage with a connector firmly.

Abstract: The connector engaging portion (A-1) of the cable side connector (A) is inserted into the shield outer cylindrical portion (21) of the shield member (2). The engaging projection (10) engages the engaging hole (26), and the guide groove portion (11) is inserted into the guide (21A). The contact terminals (41) are attached to the terminal attaching portions (5) of the connector housing 1, so that the contact terminals (41) engage the lances (8). Accordingly, the exposed portion (1B) of the connector housing (1) protrudes from the end of the shield outer cylindrical portion (21), so that the exposed portion (1B) and the shield outer cylindrical portion (21) constitute the connector engaging portion (A-1).

Abstract: An electrical connector assembly including a housing, electrical contact terminals, a hood and a filter member. The housing is sized and shaped to be plugged into an electrical connector socket of an initiator of a gas generator. A first one of the terminals has a wire connection section and a female connection section. The hood surrounds the female connection section of the first terminal. The hood is a stamped and rolled sheet metal member which has a general tube shape. The filter member is connected to the first terminal for providing electromagnetic induction suppression. The filter member can be on a filter assembly having a multi-capacitor chip attached to a spring lead frame.

Abstract: A contact terminal for a card connector is comprised of a cantilever-like spring section that can be elastically displaced, a securing section to be secured to the card connector, and a connecting section to be connected to a printed circuit board by soldering. The spring section has a plurality of split spring sections, which are formed by at least splitting the end of the spring section. The plurality of split spring sections has near the end counter contact sections, which can be contacted with the contact section of the card, and at least one of the plurality of split spring sections is twisted. This contact terminal can be mounted to the card connector.

Abstract: The present invention provides a connector capable of being easily and reliably coupled to a printed circuit board. A connector (10) comprises two sets of a plurality of lead parts (31) and a plurality of lead parts (41) extending from one side surface (11) of a housing (1) to be opposite to each other. A printed circuit board (20) includes slot (21) abutting on the side surfaces (11) to (13) of the housing (1), and edge connectors (22A) and (22B) are formed on both surfaces of an edge abutting on the one side surface (11). The edge connectors (22A) and (22B) are inserted between the lead parts (31) and (41), and the lead parts (31) and (41) are soldered to the edge connectors (22A) and (22B), respectively.

Abstract: An apparatus, system and method for facilitating the calibration and measurement of differential devices by a variety of laboratory fixtures. An adapter is used to transition the connection of standard coaxial interfaces to a hermaphroditic differential interface while compensating for discontinuities on impedance at the connection. The adapter includes a transition region with conductors and shield dimensions that compensate for the discontinuity in impedance. The adapter has pin and socket inputs so that a mated pair of the adapters provides an insertable device for test and measurement on a four port vector network analyzer.

Abstract: An electrical connector assembly (100) is mounted on a motherboard and includes an insulative housing (1) having at least two receiving cavities (110, 111) and an insert module (200) secured to the housing. The insert module includes an insulator (2), a first and a second terminal modules (4, 5) received in the insulator and a ground plate (3) secured between the first and the second terminal modules.

Abstract: A connector and a contact wafer. The connector (1) comprises contacts one on top of another and in parallel and the wafer body (8) comprises at least one channel (9) which is arranged between contacts (4) arranged in parallel and extends to the lower surface of the wafer body (8).

Abstract: A connector terminal (1) has a tab (2) fittable into a mating terminal and a press-in portion (3) to be pressed into a press-in protrusion (11) of a housing (10). The press-in portion (3) includes a base (5) having a total of two press-in sections (5a) on its opposite side surfaces, and two branches (6) branched off from the base (5) and having one press-in section (6a) formed on each of the opposite side surfaces thereof. The connector terminal (1) has a total of six press-in sections (5a, 6a), and the connector terminal (1) can be held in the housing (10) with an enhanced force even without increasing the width of the connector terminal (1) and a dimension of the press-in protrusion (11) of the housing (10) along a pressing direction.

Abstract: According to the invention, said charge of solder is in the form of a ring (9) crimped onto to said pin (1), coaxially with the latter.

Abstract: A connector for connecting two medium-voltage electrical power cables each including at least one conductor surrounded by an insulative jacket includes tubular screw contacts which connect together stripped ends of the conductors inserted into the contacts and retained by screws. An extension attached to at least one end of the connector covers a portion of the insulative jacket of the cable over a length greater than 10 mm.

Abstract: An electrical connector for electrical cables includes an electrically conductive body, an insulating cover, and moveable cable seating indicators aligned with seating indicator openings in the conductive body. The electrically conductive body may have spaced apart cable-receiving passageways for receiving respective electrical cable ends therein, and with each cable-receiving passageway may have a cable inlet opening and a cable end viewing opening opposite the cable inlet opening. The electrically conductive body may also have at least one respective fastener-receiving passageway intersecting each of the cable-receiving passageways. A respective fastener may be provided in each of the fastener-receiving passageways. The moveable cable seating indicators provide a cover and permit visual confirmation of proper placement of the electrical cable end within a corresponding one of the cable-receiving passageways.

Abstract: A terminal structure of an electrical connector has continuous terminals and a connection material tape with projections reapectively connected to the continuous terminals, which are formed by pressing a metal plate. Each terminal includes an extension having a first end and a second end, a connection having a first end connected to the first end of the extension and a second end formed with a to-be-broken portion connected to the projection, and a contact connected to the second end of the extension. The to-be-broken portion is broken to separate the terminal from the material tape. The contact has two elastic arms with a gap therebetween, and the two elastic arms have contact surfaces close to each other. The extension is horizontal and has a twisted portion to make the contact vertical so that the two contact surfaces of the contact may contact an inserted male terminal in vertical directions.

Abstract: An electrical contact element including a base element (1) formed from a flat material with a high electrical conductivity and includes a conductor contact portion (2), a base portion (4) integrally connected to the conductor contact portion (2) and formed box-like defined by an upper wall (5) with an opening (6), a bottom wall (7) arranged opposite to the upper wall (5) and two side walls (8, 9) connecting the upper wall (5) and the bottom wall (7), and a flat terminal pin (16) integrally connected to the base portion (4) and extending away from the conductor contact portion (2) and having two vertically arranged pin portions (17a, 17b).

Abstract: In an electrically shielded connector, conductive material covers an outer surface of said body and is spaced away from a conductive structure included in the connector to create electrical isolation therebetween. A channel in which the connector is situated is either plugged when conductive material is applied to the connector during manufacturing or is counter bored to create the electrical isolation.

Abstract: A running control device for a watercraft controls propulsion force and tilt angle of a propulsion device relative to the hull of the watercraft. The running control device also sets an optimum trim angle automatically. The running control device includes a propulsion force control section that controls the propulsion force of the propulsion device. The running control device also includes a tilt angle control section that controls the tilt angle of the propulsion device. A target propulsion force calculation module responds to first input information (e.g., watercraft velocity) to calculate a target propulsion force. An amount-of-operation calculation module responds to second input information to calculate an amount of operation of the propulsion device to produce the target propulsion force. The tilt angle control section includes a tilt angle calculation module that determines the tilt angle based on the propulsion force.

Abstract: A vehicle can have plural propulsion devices, at least two of which include number setting sections and number transmitting/receiving sections for transmitting their identification number and receiving identification numbers of the other propulsion devices over a network. When the number transmitting/receiving sections do not receive an identification number of another propulsion device from the network for a predetermined period of time, an initial value preset in the number setting sections is set as the identification number of the propulsion device in the number setting sections. When the number transmitting/receiving sections receive an identification number of another propulsion device from the network, an identification number different from the identification number of the other propulsion device is set in the number setting sections.

Abstract: A marine propulsion system emulates the fishes swimming motion yet is highly maneuverable as it permits changes from forward to reverse motion while underway. In other aspects, the propulsion system may be designed and optimized for efficient human powered propulsion.