20results about "Bellow pistons" patented technology

A pneumatic drive device includes a housing, a piston, and a first membrane. The first membrane and the piston are coupled to each other in such a way that an axial movement of the first membrane, caused by pressurizing a first pressure chamber, is converted into a translational movement of the piston. The pneumatic drive device also includes an output element, and a membrane. The membrane and the output element are coupled to each other in such a way that a circumferentially section-wise oscillating axial movement of the membrane, caused by circumferentially successive pressurization and depressurization of respective pressure chambers, is converted into a rotational movement of the output element.

An augmented assembly skin-constrained expandable bellows system includes a top end cap, a bottom end cap, and a bellows attached to and separating the top and bottom end caps, and configured to retain pressurized fluid between the top and bottom end caps. The system also includes nozzles configured to allow fluid to enter and exit the bellows, and a non-extendable skin attached to each of the top and bottom end caps and to the bellows. When the bellows expands via the nozzles, the top end cap is in a first position, and when the top end cap is adjusted from the first position to a second position, the skin is configured to hold the top end cap in the second position and constrain the bellows into a predetermined rigid three-dimensional shape.

A sealing device includes a movable part which is fixed to a shaft penetrating a wall of a vessel and is movable with the shaft, the vessel being configured to include an interior space, a first bellows part which has a first end fixed to the vessel and a second end fixed to the movable part, for sealing a penetrated portion of the vessel by the shaft, a second bellows part which is disposed opposite to the first bellows part across the movable part, and has a first end disposed on a side of the first bellows part and fixed to the movable part, and a second end fixed to a stationary member, and a communication path for causing an interior space of the first bellows part and an interior space of the second bellows part to communicate with each other.

An actuator system (1; 101; 201), comprising a compressive element (2; 102a, 102b; 202a, 202b), a compression means (7; 105; 300; 400), and a pump (18; 118a, 118b; 218). The compressive element (2; 102a, 102b; 202a, 202b) extends along a primary compression axis (14; 114) and is configured for compression along the primary compression axis (14; 114) and to provide a reaction force under compression along the primary compression axis (14; 114). The compressive element (2; 102a, 102b; 202a, 202b) defines an internal cavity (4; 104a, 104b; 204a, 204b) extending along the primary compression axis (14; 114). The compression means (7; 105; 300; 400) is arranged to apply a compressive force to the compressive element (2; 102a, 102b; 202a, 202b), along the primary compression axis (14; 114). The pump (18; 118a, 118b; 218) is arranged to pump fluid into the internal cavity (4; 104a, 104b; 204a, 204b) to increase the length of the compressive element (2; 102a, 102b; 202a, 202b) along the primary compression axis (14; 114).

A method of assembling an accumulator for a suspension damper, wherein the method includes the steps of forming a housing for the accumulator, assembling a bellows assembly by connecting a distal plate and a proximal plate to opposite ends of an annular bellows wall, and inserting the bellows assembly into the housing. The housing is formed such that it includes a distal end having an end wall and an open end opposite the distal end. The bellows assembly is inserted into the open end of the housing in an orientation with the distal plate facing the end wall of the housing. The method continues with coupling the distal plate of the bellows assembly to a stem of a charge port on the end wall of the housing at a fixed axial location using a fixture that engages the stem of the charge port.

An actuator having a compressive element 2 (e.g. bladder, bellow, hollow tube) defining an internal cavity 4 along a compression axis 14, means for applying compressive force to the compressive actuator 2, and a pump pressurising the internal cavity to increase the length of the actuator. The compressive element may be taller along the axis than wide perpendicular to the axis, providing a maximum actuation distance along the axis longer than the width of the compressive element. The compressive element may include two shells joined by their respective annular ring 84 (fig 12). The compressive element may be polymer. The actuator may exhibit a first stiffness below a first stress threshold, a second lesser stiffness between the first and second stress threshold, and a third lesser stiffness above the second stress threshold. The actuator may include valves and rigid endplates (fig 3-7). Multiple actuators may be arranged in series uniaxially.

A steering bellows (1) has a sleeve (2) delimited by a peripheral lateral wall (3). The sleeve (2) has, in succession in the axial direction, at least one first annular end, referred to as the large base (4), a part (5) which can be deformed in the direction of an elongation or shortening of said bellows (1) and which is formed of a succession of coaxial turns, and a second annular end referred to as the small base (6). The sleeve (2) has a zone (7) of transition between the deformable part (5) and the large base (4) and having, in the transition zone (7), a radial outlet (8) provided in the peripheral lateral wall (3) of the sleeve (2). The radial outlet (8) is closed by a tubular endpiece (9) that is mounted on the radial outlet (8) and that has a first end (10) connected to the radial outlet (8) and an opposite closed end (11). This endpiece (9) extends outside the sleeve (2), this endpiece (9) internally delimiting a cavity (10) housing at least one fluid-tightness sensor (13) of the bellows.

A steering bellows (1) comprising a sleeve (2) delimited by a peripheral lateral wall (3), said sleeve (2) comprising, in succession in the axial direction, at least one first annular end, referred to as the large base (4), a part (5) which can be deformed in the direction of an elongation or shortening of said bellows (1) and which is formed of a succession of coaxial turns, a second annular end referred to as the small base (6), said sleeve (2) comprising a zone (7) of transition between the deformable part (5) and the large base (4) and having, in the transition zone (7), a radial outlet (8) provided in the peripheral lateral wall (3) of the sleeve (2). The radial outlet (8) is closed by a tubular endpiece (9) that is mounted on said radial outlet (8) and that has a first end (10) connected to the radial outlet (8) and an opposite closed end (11), this endpiece (9) extending outside the sleeve (2), this endpiece (9) internally delimiting a cavity (10) housing at least one fluid-tightness sensor (13) of said bellows.

Disclosed is a gas collecting apparatus comprising: a gas extraction unit configured to extract gas from an analysis target battery; a gas diffusion unit having a gas diffusion space with a variable volume and configured to receive and diffuse the extracted gas from the gas extraction unit; a sampling unit having a gas sampling space configured to receive and sample the diffused gas from the gas diffusion unit; and a control unit configured to control the gas diffusion unit to adjust a volume of the gas diffusion space, wherein a volume of the gas sampling space is fixed.

An accumulator for a vehicle suspension damper includes a housing having an open end connected to an accumulator port on the damper and a distal end opposite the open end including an end wall extending radially inward to a charge port. A bellows assembly including an annular bellows wall extending between a proximal plate and a distal plate is positioned within the housing to define a pressurized gas chamber within the accumulator arranged in fluid communication with the charge port. The charge port includes a stem extending inward from the end wall of the housing and the distal plate of the bellows assembly has an inner diameter received on the stem. The inner diameter of the distal plate is coupled to the stem of the charge port by a securing member.

A pneumatic drive device includes a housing, a piston, and a first membrane. The first membrane and the piston are coupled to each other in such a way that an axial movement of the first membrane, caused by pressurizing a first pressure chamber, is converted into a translational movement of the piston. The pneumatic drive device also includes an output element, and a membrane. The membrane and the output element are coupled to each other in such a way that a circumferentially section-wise oscillating axial movement of the membrane, caused by circumferentially successive pressurization and depressurization of respective pressure chambers, is converted into a rotational movement of the output element.

A seal assembly with a housing having an outlet opening and a working component disposed therein for opening and closing the outlet opening to regulate fluid flow through the outlet opening. The working component can include a locking cap, seal element, a shaft, and a locking ring. The locking ring can optionally be integrated with the seal element.

The present invention relates to an inflatable tubular element (3, 37) for a fluid inflatable bellow, comprising a peripheral wall (7) sealed to said fluid and formed by a plurality of panels (9) connected two by two by substantially straight links (11) each realized as a pivot axis, said panels (9) being more rigid than said links (11) so as to enable two panels (9) adjacent to a link (11) to rotate about the pivot axis realized by the link (11), each end of a link (11) being connected to the end of at least two other links (11) so as to define nodes (13) each having a thickness greater than the minimum thickness of the adjacent links (11). The present invention also relates to a method for manufacturing such an inflatable tubular element (3, 37), as well as to a fluid inflatable bellow (1, 35, 39) comprising such an inflatable tubular element (3, 37).

We provide a hybrid bellows for vehicle height adjustment devices that has a long lifespan. [Solution] The present invention relates to a hybrid bellows for a vehicle height adjustment device, the hybrid bellows comprising a multilayer body 2 having a first free end 3, a second free end 4, and an operating chamber 5 that can be formed between the free ends 3 and 4, the body 2 having an inner elastomer layer 6 facing the operating chamber 5 and an outer elastomer layer 8 facing the surrounding environment 7, the inner elastomer layer 6 having a first material composition and the outer elastomer layer 8 having a second material composition. The hybrid bellows is characterized in that the first material composition and the second material composition are different from each other. Furthermore, the present invention relates to a vehicle height adjustment device comprising such a hybrid bellows.

The disclosure is directed to a pneumatic drive device (2), comprising a housing (4), a piston (6), and a first membrane (8), the first membrane (8) and the piston (6) being coupled to each other in such a way that an axial movement of the first membrane (8), caused by pressurizing a first pressure chamber (16), is converted into a translational movement of the piston (6). Further, the disclosure is directed to a housing (54), an output element (56), and a membrane (58), the membrane (58) and the output element (56) being coupled to each other in such a way that a circumferentially section- wise oscillating axial movement of the membrane (58), caused by circumferentially successive pressurization and depressurization of respective pressure chambers (66, 68, 70), is converted into a rotational movement of the output element (56).