Reset Patents (Class 267/176)
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Patent number: 11415239Abstract: A valve linear drive provided for connection to a valve body having a valve seat includes a drive housing, a valve closure member, an actuator, and a spring device. The valve closure member is adjustable along an adjustment axis (V) between an open position and a closed position by means of the actuator and an actuating means. The spring device urges the actuating means into the open position or into the closed position. Further, the spring device includes a plurality of springs and a receiving unit for the springs. Here, each spring has its own spring chamber formed in the receiving unit, in which the associated spring is inserted. Furthermore, a valve having such a valve linear drive is provided.Type: GrantFiled: June 4, 2021Date of Patent: August 16, 2022Assignee: BÜRKERT WERKE GMBH & CO. KGInventors: Florian Fischer, Ralf Strasswiemer, Maik Fuchs, Georg Moll, Vinoth Pathmanathan
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Patent number: 10591011Abstract: An elastic member is an elastic member formed of a wire having a cross section that is substantially circular, the cross section being orthogonal to a longitudinal direction, and the elastic member being expandable and contractible in a predetermined direction; and including: a first alloy portion that is made of an aluminum alloy having a tensile strength larger than 950 MPa and equal to or less than 1100 MPa at room temperature; and a second alloy portion configured to cover the first alloy portion, the second alloy portion having a thickness in a radial direction smaller than a radius of the first alloy portion, and being made of an aluminum alloy having a tensile strength of 100 MPa to 650 MPa at room temperature.Type: GrantFiled: June 28, 2016Date of Patent: March 17, 2020Assignee: NHK Spring Co., Ltd.Inventors: Toshio Kazama, Noritoshi Takamura, Shigeki Ishikawa, Takeshi Suzuki
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Patent number: 8183486Abstract: The invention describes a spring arrangement for spring drive unit, which spring arrangement comprises a spring, a pullrod connected at a first pullrod end to a first spring end of the spring and connected at an opposite second pullrod end to a rotary shaft of the spring drive unit, a frame plate against which a second spring end of the spring is mounted and the frame plate being provided with an opening through which the pullrod extends to be connected to the shaft. Further, the first spring end of the spring, to which the pullrod is connected, is unguided, and the parameters of the spring are chosen in response to the operating conditions of the spring drive unit such that the spring is stable during operation.Type: GrantFiled: December 23, 2008Date of Patent: May 22, 2012Assignee: ABB Technology AGInventors: Johannes Tredoux, Staffan Jacobsson
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Patent number: 6988597Abstract: A spring applied/hydraulically released brake mechanism for a mechanical brake including an actuator lever extending between a movable piston, which piston is normally biased to a closed position by a spring with a selective pressurization of a chamber on the other side of the piston deactivating the mechanical brake through the lever.Type: GrantFiled: January 26, 2002Date of Patent: January 24, 2006Assignee: White Hydraulics, Inc.Inventor: Richard Daigre
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Patent number: 5180149Abstract: A coil spring is provided for use in biasing opposing piston portions of a brake cylinder away from each other. The spring includes a body portion formed of a length of alloy wire and including adjacent coils spaced from each other defining a cylindrical helix. A pair of end portions are formed integrally with the body portion and include a plurality of coils positioned in contact with each other and defining a conical helix shape for engaging the opposing piston portions of the brake cylinder.Type: GrantFiled: December 5, 1991Date of Patent: January 19, 1993Assignee: Twist Inc.Inventors: Michael S. Given, Joe W. Wright
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Patent number: 4883262Abstract: A spring-containing device comprises a housing including a removable end plate (2). A plurality of screw-threaded tie rods (7) have nuts (28) holding the end plate (2) in assembly in the housing. A safety plate (14) is disposed within the housing at a fixed spacing from the end plate (2) but short of a movable spring-retaining plate (8) at its closes approach to the end plate (2). The safety plate (14) is fast on a shaft (15) rotatable in the end plate (2) and adapted (at 16) to be turned from outside. The safety plate (14) has keyhole-shaped openings through which the respective tie rods (7) extend and the tie rod (7) have safety collars (18) which can only pass through the keyhole-shaped openings when the safety plate (14) is in a certain angular position.Type: GrantFiled: February 1, 1988Date of Patent: November 28, 1989Assignee: Prime Actuator Control Systems LimitedInventor: Michael A. Calvert
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Patent number: 4585094Abstract: The invention relates to a hydraulic rim brake for bicycles with a triggering mechanism which is attached to the handlebar of the bicycle and is actuated by a hand lever, with two brake cylinder housings which are attached to the frame of the bicycle in oppositely located relationship to each other and enclose between them a wheel rim, the brake cylinder housings being connected by pressure lines to the triggering mechanism, with pistons displaceable in the brake cylinder housings, and with brake shoe supports arranged on these pistons for supporting brake shoes engaging the rim. In order to protect the piston from the effect of harmful bending moments, provision is made for the brake shoe supports to be in the form of flanges which are connected to the piston and are each displaceable parallel to the motion of the brake piston in a slide guide provided on the brake cylinder housing, and for the slide guide to simultaneously constitute abutments for absorption of the braking forces.Type: GrantFiled: October 4, 1984Date of Patent: April 29, 1986Assignee: Gustav Magenwirth GmbH & Co.Inventors: Ludwig Rottenkolber, Manfred Schwab
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Patent number: 4505457Abstract: A height adjusting device for the truck of a railroad vehicle including spring retainer supporting members consisting of a plurality of concentric segments which are arranged around the axis of a spring retainer in symmetry with respect to the axis. Each segment has an upper surface which is so stepped that the height thereof is successively increased as the distance of the upper surface from the spring axis increases, providing thereby a plurality of horizontal supporting surfaces, and a tongue or groove for locating and fixing the segment. The spring height can easily be adjusted simply by changing the position of the segments relative to the spring retainer.Type: GrantFiled: June 2, 1982Date of Patent: March 19, 1985Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Yukio Okada, Akira Iwamura
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Patent number: 4458605Abstract: A pair of adjustment plates are disposed below a mechanical spring which supports a car body. At least one of the adjustment plates include spaced stepped portions to engage a portion of the other plate with the stepped portion engaged determining the height of the car. When the car load is removed from the springs, the relative positions of the plates may be selectively changed to adjust the height of the car body. A shock absorber is connected inside the mechanical spring and removable through the adjustment plates.Type: GrantFiled: June 14, 1982Date of Patent: July 10, 1984Assignee: The Budd CompanyInventors: James M. Herring, Jr., Walter S. Eggert, Jr.
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Patent number: 4079926Abstract: An energy absorbing support formed of a composite coil defining a core and a tubular sheath with the sheath being formed of a material having a higher elastic yield strain limit than that of the core. The coil defines a first portion and a second portion with a support of the coil disposed intermediate the first and second portions. Structure is provided for applying a preselected preload to the coil. The coil materials are preselected to maintain elastic and damping characteristics at cryogenic temperatures, such as below -150.degree. F. The support is adapted for use in rigorous environments such as encountered in the space shuttle and the like, and provides lightweight, long life, resilient support of critical elements, such as piping and the like, therein.Type: GrantFiled: January 5, 1976Date of Patent: March 21, 1978Assignee: Brunswick CorporationInventor: John Nunes