Abstract: An automated, computational, software tool for adaptable, real-time configuration of Live to Virtual (L-V) tactical communications for continuous training environments. In these types of cosite environments, this tool de-conflicts mutual interfering frequencies of antenna pairs against required antenna isolation, thus eliminating the need for expensive couplers and frequency confining tunable filters.

Abstract: A fence section includes an upper horizontal rail and a lower horizontal rail extending along respective upper and lower rail axes. A horizontal upper wall of the upper rail includes apertures spaced apart along the length of the upper rail. Vertical members extend beyond the upper wall through an internal cavity of the upper rail and through a respective aperture. The upper rail includes a first counterpart of a connecting structure for connecting at least one vertical member to the upper rail, the first counterpart being integrally formed with the upper rail. The at least one vertical member includes a second counterpart of the connecting structure, the second counterpart being integrally formed with the vertical member and configured to directly engage the first counterpart of the upper rail upon insertion of the vertical member through the respective aperture in the upper wall of the upper rail.

Abstract: A fixture mounting assembly comprises a track; and a fixture mount on the track and configured to engage a fixture, the track being pivotable between a generally upright orientation and a generally horizontal orientation where engagement of the fixture mount and fixture is facilitated.

Abstract: A fixture mounting assembly comprises a track; and a fixture mount on the track and configured to engage a fixture, the track being pivotable between a generally upright orientation and a generally horizontal orientation where engagement of the fixture mount and fixture is facilitated.

Abstract: A fence section includes an upper rail, a lower rail, a first fence panel, and a second fence panel. The first fence panel has a first upper end adjacent to the upper rail, a first lower end adjacent to the lower rail, and a first vertical side extending between the upper and lower ends. The second fence panel has a second upper end adjacent to the upper rail, a second lower end adjacent to the lower rail, and a second vertical side extending between the upper and lower ends. A male engagement element is formed along at least a portion of the first vertical side, and a female engagement element is formed along at least a portion of the second vertical side. The male engagement element and the female engagement element are configured to cooperate to releasably secure together the first fence panel and the second fence panel.

Abstract: A fence system includes a first extruded lineal extending lengthwise along a first longitudinal axis. The first lineal has a sidewall with at least a first slot in the sidewall and the first slot extends generally perpendicular to the longitudinal axis. The fence system also includes a second extruded lineal extending lengthwise along a second longitudinal axis. The second extruded lineal includes at least a corresponding first attachment leg extending outward from the second extruded lineal and parallel to the second longitudinal axis. The first attachment leg is integrally extruded with the second extruded lineal and is received in the first slot to secure together the first and second extruded lineals.

Abstract: A fence system includes a first extruded lineal extending lengthwise along a first longitudinal axis. The first lineal has a sidewall with at least a first slot in the sidewall and the first slot extends generally perpendicular to the longitudinal axis. The fence system also includes a second extruded lineal extending lengthwise along a second longitudinal axis. The second extruded lineal includes at least a corresponding first attachment leg extending outward from the second extruded lineal and parallel to the second longitudinal axis. The first attachment leg is integrally extruded with the second extruded lineal and is received in the first slot to secure together the first and second extruded lineals.

Abstract: Methods are disclosed for providing a snorkel with a pivotal joint that is arranged to permit a pivoting lower portion of the snorkel to pivot around an axis that is at a significant angle to the longitudinal alignment of at least one portion of the upper portion of the snorkel between the joint and the upper opening of the snorkel. Methods are provided for providing a joint member having an axially twisting connection that is arranged to permit the lower portion of the snorkel to experience a predetermined amount of pivotal motion within a plane that is substantially parallel to the longitudinal alignment of the upper portion of the snorkel above the joint. Methods are provided for providing a drop away snorkel that has a greater freedom of movement in a lateral direction than in a longitudinal direction relative to the face of a swimmer.

Abstract: Methods are disclosed for improving the performance and design of snorkels (20) that are arranged to reduce splashes of water from entering the snorkel (20) during use. Methods including providing a non-floating active portion (72) and a spring member (54) to move active portion (72) to a closed position (68). Methods are provided for using weighted members (94) and, or floats (44) in conjunction with biasing members (54) exerted with torque across pivoting arms (42) and along longitudinal directions of motion (100). Methods are provided for enabling dry top snorkel devices (38) to automatically achieve, maintain or reestablish a closed position (68) at depth even if little or no pressure differential exists between the inside and outside of the snorkel (20) or if the sealed connection is disengaged at depth, such as can occur during a firm exhale at depth.

Abstract: Methods are disclosed to design resilient hydrofoils (164) which are capable of having substantially similar large scale blade deflections under significantly varying loads. The methods permit the hydrofoil (164) to experience significantly large-scale deflections to a significantly reduced angle of attack under a relatively light load while avoiding excessive degrees of deflection under increased loading conditions. A predetermined compression range on the lee portion of said hydrofoil (164) permits the hydrofoil (164) to deflect to a predetermined reduced angle of attack with significantly low bending resistance.

Abstract: Methods are disclosed to design resilient hydrofoils (164) which are capable of having substantially similar large scale blade deflections under significantly varying loads. The methods permit the hydrofoil (164) to experience significantly large-scale deflections to a significantly reduced angle of attack under a relatively light load while avoiding excessive degrees of deflection under increased loading conditions. A predetermined compression range on the lee portion of said hydrofoil (164) permits the hydrofoil (164) to deflect to a predetermined reduced angle of attack with significantly low bending resistance.

Abstract: Methods are disclosed for designing improved flexible tubes and production methods which have improved flexibility and resistance to collapsing under load or during bending. Methods for injection molding a flexible tube (2) and providing at least one support member (4) that is arranged to provide improved lateral support to reduce lateral collapsing of the flexible tube (2). Methods for using and fabricating flexible tubes (2) are also provided for various shapes of support members (4) including annular ribs, helical ribs, spaced apart coils (128), narrow ribs, wide supports, as well as for various cross sectional shapes of flexible tubes (2), including streamlined elongated hydrofoil shaped cross sectional shapes relative to the longitudinal axis of flex tube (2).

Abstract: Methods are disclosed to design resilient hydrofoils (164) which are capable of having substantially similar large scale blade deflections under significantly varying loads. The methods permit the hydrofoil (164) to experience significantly large-scale deflections to a significantly reduced angle of attack under a relatively light load while avoiding excessive degrees of deflection under increased loading conditions. A predetermined compression range on the lee portion of said hydrofoil (164) permits the hydrofoil (164) to deflect to a predetermined reduced angle of attack with significantly low bending resistance.

Abstract: Methods are disclosed for increasing lift and decreasing drag on hydrofoils and swim fins. Methods are disclosed for providing a hydrofoil with a substantially longitudinal recess or venting system located substantially along the center axis of the hydrofoil. Methods also include providing the attacking surfaces of hydrofoils with an anhedral contour that forms a substantially lengthwise channel with the recess or venting means located along the center axis of this lengthwise channel. Methods are also disclosed for arranging a central recess or venting system to permit water to flow through it toward the lee surfaces in order to reduce the occurrence of outward directed spanwise flow conditions along the attacking surfaces and encourage inward directed spanwise flow conditions to occur along the attacking surfaces.

Abstract: Designs and methods are disclosed for permitting scooped shape swim fin blades (184) to flex around a transverse axis to a significantly reduced angle of attack while reducing or preventing the scooped blade portion (254) from collapsing or buckling under the longitudinal compression forces (22) exerted on the scooped portion during a large scale blade deflection (212) by strategically alleviating or controlling such compression forces (222). Methods are also disclosed for increasing flow capacity, effective scoop length, scoop depth over a greater length of the blade, reducing blade resistance to large scale deflections, reducing bending resistance within scooped blade portions (254) that are experiencing high levels of blade deflection. Methods are also provided for reducing lost motion and increasing propulsion during the inversion phase of a reciprocating kicking stroke cycle while also increasing the formation of a scooped blade region (254) during the inversion phase of the stroke cycle.

Abstract: Designs and methods are disclosed for permitting permit scooped shaped swim fin blades (184) to flex around a transverse axis to a significantly reduced angle of attack while reducing or preventing the scooped blade portion (254) from collapsing or buckling under the longitudinal compression forces (222) exerted on the scooped portion during a large scale blade deflection (212) by strategically alleviating or controlling such compression forces (222). Method are also disclosed for increasing flow capacity, effective scoop length, scoop depth over a greater length of the blade, reducing blade resistance to large scale deflections, reducing bending resistance within scooped blade portions (254) that are experiencing high levels of blade deflection. Methods are also provided for reducing lost motion and increasing propulsion during the inversion phase of a reciprocating kicking stroke cycle while also increasing the formation of a scooped blade region (254) during the inversion phase of the stroke cycle.

Abstract: Methods are disclosed to design resilient hydrofoils (164) which are capable of having substantially similar large scale blade deflections under significantly varying loads. The methods permit the hydrofoil (164) to experience significantly large-scale deflections to a significantly reduced angle of attack under a relatively light load while avoiding excessive degrees of deflection under increased loading conditions. A predetermined compression range on the lee portion of said hydrofoil (164) permits the hydrofoil (164) to deflect to a predetermined reduced angle of attack with significantly low bending resistance.

Abstract: An improved adjustable heel strap having an adjustable instep strap connected to the heel strap adjacent the heel portion of a swimmer' foot. Methods are provided for providing a highly adjustable strap system for preventing loss of swim fins in rough water conditions such as large surf and large open ocean waves. Methods are also provided for providing multi-dimensional heel strap adjustability around the ankle and instep to reduce ankle strain, increase ankle support, distribute load and stress points, reduce chaffing and blisters, increase leverage and power to the swim fin, reduce looseness and play between the foot and the swim fin, to increase comfort, to increase control, to improve positioning control, to improve sizing adjustment and to provide increased conformity to greater variations in foot and ankle sizes, shapes and contours.

Abstract: Apparatus for indicating the oil level in a central heating oil tank comprises a battery powered monitoring unit (1) for mounting on the oil tank which determines the oil level by an ultrasonic signal transmitter/receiver (18). A first microprocessor (14) in the monitoring unit (1) determines the oil level from the ultrasonic transmitter/receiver (18) and operates a primary transmitter (12) for transmitting a radio signal which includes data indicative of the oil level. A remotely mounted mains electricity powered receiving unit (3) comprises a primary radio receiver (15) for receiving the transmitted signal, and a second microprocessor (16) in the receiving unit (3) controls the operation of a visual display unit (10) for graphically displaying the oil level. The monitoring unit (1) and the receiving unit (3) are operable in a teaching mode initially on power-up of the receiving unit (3) during which the monitoring unit (1) teaches the receiving unit (3) its address.