The ends of the sail control arm 38 are connected to the ends of the T-shaped member 40 by the cables 52, 54. The cables 52, 54 are of equal length, and the length of the sail control arm 38 is the same as that of the T-shaped member 40, so that those elements form a parallelogram when viewed in the horizontal plane. 5, the other cable moves an equal amount in the opposite direction, thereby raising or lowering the inner pipe 86. The pulleys and the column 14a do not rotate, but the plate 84 does pivot with the arm 18a. It is necessary to decouple the pivotal motion. The sail angle varies in an approximately sinusoidal manner, but is 90 degrees out of phase with the motion of the arm.
- Mójate las manos con agua limpia
- Afectación hepática, lo que hace necesario controlar las enzimas del hígado
- Los riñones
- Pacientes con enfermedades autoinmunes
- Enfermedad de Kawasaki. Fiebre, erupción cutánea y enrojecimiento de los ojos
- Bases farmacológicas de la rotación de opioides
- Con la espalda recta y el torso firme estira los brazos hacia arriba y junta tus palmas
Likewise, the aerodynamic force on the sails 28a, 28b is brought to bear on the arms 22a, 22b and that force is transmitted by the connecting rods 46a, 46b to a pair of rocker arms 77, 79 that raise and lower the plate 89 to exert upward and downward forces on the pipe 88. Pivotal motion of the plate 89 must be decoupled from the lower portion of the pipe 88, and this is accomplished by the coupling 91, which transmits upward and downward motions but does not transmit pivotal motion. Likewise, as the wheel 114 is rotated through 90 degrees about the pin 118, the motion of the cables Sa gradually diminishes, even though the motion of the cables Pb is not diminished.
Also, when the wheel 114 has been rotated through 90 degrees from the position shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION Turning now to the drawings, in which like parts are denoted by the same reference numeral throughout, there is shown in FIG. Wind motors designed for use at high wind speeds typically employ propellers, and either do not work at all or are grossly inefficient at low wind speeds. TECHNICAL FIELD The present invention is in the field of wind motors and more particularly relates to a wind motor not requiring high wind speeds, and in which the prime mover is a sail whose angle of attack is continuously altered to produce a reciprocating motion of an arm on which the sail is mounted. In accordance with the present invention, this is accomplished by providing two sails connected to a drive shaft in quadrature, so that when one of the sails is supplying minimal power, the other sail is supplying maximum power, thereby eliminating the possibility that the motor might stall at a position from which it could not be restarted.
Dolor Espalda Cáncer Pulmón
Pat. No. 1,154,930 of Might. Pat. No. 1,321,415 of Brown; and U.S. Pat. No. Dolor de talon pie derecho . 2,406,268 of Terhune; U.S. Pat. No. 1,636,423 of Langenbauch; U.S. Pat. No. 1,964,347 of Ford; U.S. Pat. No. 2,045,233 of Kirsten, et al. The prior art relating to low-speed wind motors appears to fall into several well-defined categories. Thus, although a number of approaches have been tried to extract energy from low-speed winds, it appears that the inventions which employ oscillating arms also employ abrupt alteration of the angle of the sails at the end of each stroke. The angle of these vanes is abruptly altered at the end of each stroke by mechanical stops, in a first embodiment. The extreme positions are determined by a chain or cable whose effective length varies throughout the stroke in a determinable manner. Que medicamento sirve para el dolor muscular . Referring to FIG. 2, the first arm 22a and the third arm 22c move in quadrature, and the second arm 22b and the fourth arm 22d move in quadrature, as required by the cable connections shown in FIG.
This objective is accomplished by eliminating the possibility of a stalled condition, and by designing the motor to reduce stresses on the components and to eliminate abrupt changes in the direction of the sails. An abrupt change of direction imposes greater stresses on the structure and results in a mechanical shock or impulse that jerks the entire structure. Another possibility for programming the position of the arm 50 with respect to the base 18 involves setting up wind velocity and direction sensors at stations positioned a short distance away from the apparatus in FIG. In a preferred embodiment of the invention, the angle of the sail assembly with respect to the base is constrained to vary in quadrature with respect to the angle of the arm with respect to the base. FIG. 2 is a diagram showing the major components of a preferred embodiment of the present invention. 2 in greater detail; it is typical of the left-hand portion of FIG.
The positions of the control panels are altered by the snap action of a toggle as the rocking boom approaches the limit of its oscillating motion, thereby causing the arm to pivot in the opposite sense. The lateral motion of the arm is approximately sinusoidal (in a steady wind), and the angle of each sail is altered in relation to the lateral position of the arm. There is no provision for altering the angle of the control panels in relation to the angle of the boom. Wings are mounted to the upwind and downwind ends of the elongated boom, and each wing includes a control tab or panel extending along its downstream edge.
Dolor De Cabeza
Thus, there has been described a preferred embodiment of a wind motor that includes a number of novel features. One category includes wind motors in which a number of sails are mounted for rotation on arms which rotate about an axis. In these patents, a number of airfoil blades are rotatably mounted to a wheel, with the individual axes of rotation parallel to the axis of rotation of the wheel.
Dolor Espalda Lado Derecho
5. This rotation of the wheels is accomplished by moving the cables 120, 122 manually. So long as the cables 120, 122 are connected to each other as shown in FIG. FIG. 2 is a diagram showing in perspective the arrangement of two masts connected to a central station. In the preferred embodiment, two such pairs of sails are connected in quadrature to a drive shaft to prevent the machine from coming to rest at a top-dead-center condition. This permits the sail assemblies to be feathered to withstand strong winds, and also permits the speed of rotation of the output shaft of the machine to be controlled by a governor so as to be independent of the windspeed. This equation characterizes the quadrature relationship. This quadrature connection will then result in the arm oscillating back and forth with respect to the base in an undulating motion. As shown, the motion of the sails 28a and 28b is at quadrature with respect to the motion of the sails 28c and 28d. As shown in FIG.