Abstract: A device for dispensing at least one fluid comprises pumping means comprising an elastic deformable membrane (2) having a wavy annular wall (16) for producing a desired stiffness or pliability for said membrane (2). A pumping element (1) comprises a base (4) and said elastic deformable membrane (2).

Abstract: A bellows-type pump includes a body portion with an inlet and an outlet. A bellows member is secured to the body portion and provides a dosage volume that communicates with both the inlet and outlet. Compressing the bellows member causes a sealing web thereof to contact the inlet and seal the same against the flow of product from within the dosage volume. The sealing web does not cover the outlet upon compression of the bellows member and, thus, product is dispensed through the outlet upon such compression. Expansion of the bellows member draws product in through the inlet.

Abstract: An elevated platform is provided. The elevated platform includes a platform and a housing. A bladder that includes a first surface is coupled with and operative to elevate the platform. The first surface is operative outside the housing. Other embodiments are provided, and each of the embodiments described herein can be used alone or in combination with one another.

Abstract: A fluid powered linkage (12) has at least three side plates (18) of substantially equal width joined by connectors (17) to form a polygon of variable cross sectional area. An upper plate and a lower plate enclose a variable volume within the polygon. At least one port (37) allows fluid to enter into or leave from the enclosed variable volume in a controllable manner. Seals prevent fluid from entering or leaving the enclosed variable volume other than through the one or more ports. Two abutments (19, 11) are located on the side plates or connectors and the distance between the two abutments varies non-linearly with, but in the same direction as, the variable cross-sectional area. Optionally, an inner surface of one or more of the side plates defines a recess. A preferred linkage has a cross-section in the shape of a diamond or rhombus of varying internal angles, or a half or quarter thereof. In use, the obtuse angle preferably ranges from nearly 180 degrees to about 135 degrees.

Abstract: An air is evacuated from a chamber of a bellows by a vacuum pressure supply source connected to a vacuum port of an attachment plate. The vacuum pressure in a vacuum chamber is thus balanced with the vacuum pressure in the chamber of the bellows. Consequently, the bellows is prevented from expanding by balancing the respective vacuum pressures in the chamber of the bellows and in the vacuum chamber.

Abstract: A cam plate pump comprises a pressurizing chamber formed by a bellows which elongates and contracts along a center axis parallel to the input shaft of the pump. The cam plate rotates together with the input shaft, and compresses the bellows via a piston. A mechanism for guiding the piston along the center axis, and a mechanism for blocking the rotational torque acting on the bellows via the piston are provided. These mechanisms prevent a bending load or twisting load from acting on the bellows.

Abstract: An actuator, which directly converts fluid pressure to rotary movement, has generally cylindrical and helically fluted circumferential wall, an end wall bearing an output member, and a fixed opposite end wall. The actuator may be a one-shot device providing substantial torque and driving the output member through a relatively wide angle by having a pyrotechnic gas generating charge mounted inwardly of the fixed end wall and by exceeding the elastic limit of the circumferential wall which is metallic to so as to withstand pyrotechnically generated gas.

Abstract: A fluid pressure actuated assembly includes a casing made of a flexible resilient material, such as rubber or polyurethane, a coiled tension spring sleeved on the casing for biasing the casing to move toward a retracted position, and a coiled spacing spring interposed between the tension spring and the casing for preventing any wall of the casing from being clamped between any two adjacent turns of the tension spring. When a compressed fluid is applied to the interior of the casing, the casing extends.

Abstract: An apparatus (10) for the storage therewithin and expulsion therefrom of a fluid medium includes a tubular tank (15) and a pair of diametrically opposed, simultaneously actuatable pistons (50) permanently sealed to the tank by a pair of rupturable seals (65). The pistons are driven by a secondary fluid the effects of which are shielded from the interior surface of the tank by a pair of flexible shields fixed at the ends thereof to a corresponding piston and the inner surface of the tank, movement of the pistons effecting an expansion of the shields to form a protective lining for the tank.

Abstract: In a servo booster for a vehicle braking system, of the kind having a tie rod for relieving the booster housing of braking reaction forces which extends through the movable wall(s) of the booster, the movable wall is sealingly connected to a wall of the housing by a bellows located substantially coaxially about the tie rod. The bellows has at least one integral reinforcing rib which completely encircles the tie rod. The rib resists ballooning of the bellows and also guides the bellows along the tie rod. In the case of a tandem booster having a stationary partition wall between a pair of movable walls, the interior of a bellows connecting the rear movable wall to the partition wall provides fluid communication between the chambers bounded by the rears of the movable walls. Fluid communication between the other two chambers is provided via a tubular member integral with the front movable wall and extending sealingly through the partition wall.

Abstract: Means and method are provided for utilizing a piston and cylinder combination eliminating the usual sealing and oil rings and their accompanying friction and replacing them with ball bearings which in the principal embodiment are captured in splitring cages which are snapped into the existing grooves of the piston. Having thus lost the sealing ability of the piston, an accordion-type diaphram is utilized in the top of the cylinder to define the compression or combustion chamber.

Abstract: A device is proposed which accumulates and stores energy of blowing wind.Rotatable means turn the device into the direction of the blowing wind, so that articulated flaps are fully exposed to the wind. These flaps are connected with air pumping means which delivers a quantity of air into a storage container, the air being successively compressed within the container.

Abstract: A gas turbine engine and automatic transmission power train having a modulator valve controlled by an engine compressor pressure and altitude responsive force actuator and a speed governor to provide a modulator pressure increasing with increasing engine power during normal engine operation and decreasing with increasing output speed operative to increase friction drive capacity and increase upshift speed with increasing modulator pressure. The force actuator provides a force which increases with increasing compressor discharge pressure and an altitude aneroid provides an opposing force decreasing with increasing altitude so the net actuator apply force increases with increasing compressor discharge pressure and altitude and is the same at the same engine power at all altitudes.

Abstract: A control unit which is particularly useful in controlling the output pressure of a turbocharger in response to the manifold pressure with compensation for pressure drop at the throttle characterized by a reference unit disposed in the housing for the manifold pressure to act on and at least one diaphragm extending across said housing to apply the pressure differential between the manifold pressure and the output pressure of the turbocharger. In one embodiment, the reference unit includes a bellows of a predetermined volume of gas which schedules the displacement of the reference unit in response to the temperatures of the gases of the manifold. Another embodiment includes an additional diaphragm and valve means for applying additional pressures to the reference means to compensate for the altitude for the system to prevent overspeeding of the turbocharger.