Snubbed Coil Spring Or Ring Pack Patents (Class 267/135)
  • Patent number: 8998185
    Abstract: A Tuned Mass Damper (TMD) for damping oscillations of a hanging vertical pump structure includes a removable mass symmetrically configured within the pump structure diameter and supported by a mechanism which provides damped mobility relative to the pump structure so as to absorb and dampen pump vibrations and oscillations. The TMD mass is easily removable before tipping of the pump between horizontal and vertical orientations during maintenance. In some embodiments, the TMD mass comprises fluid pumped by the pump to fully or partially fill a housing, the fluid being gravitationally drained therefrom when the pump is not operating. In other embodiments the TMD mass is supplied by removable solid weights. Damped mobility is provided by springs damped by mechanical or fluid friction, or by obstructed movement of fluid within a partially filled housing. In embodiments, the TMD mass is at least 5% of the total mass of the pump structure.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: April 7, 2015
    Assignee: Flowserve Management Company
    Inventor: Jason Douglas Allaire
  • Publication number: 20130015612
    Abstract: A hysteresis assembly, including: first, second, and third plates; at least one fastener connecting the first and third plates; and, at least one resilient element. The resilient element is: disposed between the first and second plates; disposed about the fastener; and arranged to urge the second plate into frictional contact with the third plate. A damper assembly, including: first and second cover plates arranged to receive torque; a flange axially disposed between the cover plates; at least one first resilient element engaged with the cover plates and the flange and arranged to transmit the torque to the flange; at least one fastener connecting the cover plates and passing through the flange; and at least one second resilient element. The resilient element is: disposed between the first cover plate and the flange; disposed about the fastener; and arranged to urge the flange into frictional contact with the second cover plate.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 17, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Craig Kneidel
  • Patent number: 7090207
    Abstract: A single-end-mount seismic isolator for protecting a structure from the effects of seismic shock or other external applied forces includes a load shaft that is secured at its first end to a mounting surface on which the structure is supported. So secured, the load shaft projects beyond a base of the structure, on which an actuator is supported. A resilient element, such as a friction spring, is operably interposed between the load shaft and the actuator to allow relative motion between the structure and the mounting surface in the event of a seismic shock or other external applied force. The resilient element also absorbs energy of such motion. The single-end-mount design facilitates seismic retrofitting of existing structures and servicing of seismic isolators in the field. In dual-action embodiments, the resilient element includes primary and secondary resilient elements for damping in two directions.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: August 15, 2006
    Assignee: DQP LLC
    Inventors: Abe Qutub, Ted V. Mercer, Michael B. Williams
  • Patent number: 6513800
    Abstract: A double acting mechanical shock isolator that includes a stack of friction springs contained within a housing. The stack is retained between the end walls of the housing by a pair of opposed slides. A sleeve passes through the stack and the ends of the sleeve are contained within opposing slides. The ends of the sleeve are connected to the slides by lost motion devices so that the sleeve is engaged by one of the containing slides when the sleeve moves toward the opposing slide and releases the slide when the sleeve moves in the opposite direction so that the stack is loaded in compression when the sleeve is moved axially in either direction.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: February 4, 2003
    Assignee: Enidine Inc.
    Inventors: Brian Charles Bucholtz, Daniel Charles Radice, Scott Joseph Tokasz
  • Patent number: 5926935
    Abstract: A torsion spring having a central coiled portion and a pair of resilient arms projecting from the coiled portion in different directions is incorporated in a workpiece so that the coiled portion is fitted on a support pin on the workpiece and the arms are engaged with first and second engagement portions on the workpiece. A center pin is inserted into the coiled portion of the torsion spring, and the coiled portion is held by attraction of an attracting portion provided around the center pin. A pair of forming pins are moved relative to the center pin in directions perpendicular to the longitudinal axis of the center pin to abut against the respective arms of the torsion spring and deflect them.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: July 27, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Mizuta, Mitsuyoshi Okiyama
  • Patent number: 5580032
    Abstract: The invention relates to an arrangement for a gas spring (1). This consists of an outer cylindrical casing (1a) with a sealing end wall (1b, 1c) at either end. Of these, one (1c) has an axial bore for a piston rod (4a) passing through the bore, which piston rod is connected to a piston (4b) moving axially in the interior of the casing. The arrangement also consists of an annular cylindrical body (5) made of an elastic material. The outer cylindrical wall of the body (5) is operatively connected to the casing (1a) in a sealing fashion. The inner cylindrical wall of the body (5) is operatively connected to the piston (4b) in a sealing fashion. A certain gas pressure prevails in a space (9) defined by the cylindrical wall of the casing (1a), the other end wall (1b) and the piston (4b) and the annular surface of the annular cylindrical body (5) facing away from the end wall (1c) executed with a bore.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: December 3, 1996
    Assignee: Stromsholmens Mekaniska Verkstad AB
    Inventor: Krister Gustafsson
  • Patent number: 5395130
    Abstract: An attachment for a two wheeled bicycle allowing a mentor to provide a graduated correcting and stabilizing force to the bicycle for aiding a novice rider to maintain balance and gain confidence. The attachment comprises two substantially parallel rigid tubular members having an inside diameter being fastened to a bicycle frame and a hairpin shaped handle having a resilient connection to the members. The hairpin includes a U-shaped portion having extended straight parallel limbs. The end of each straight limb is connected to a spring-like bendable element which is inserted partly or fully into the tubular members. The spring-like elements have a sliding interference fit within the interior of the tubular members.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: March 7, 1995
    Inventor: Mary Ann C. Rubin
  • Patent number: 5083755
    Abstract: Face shock absorber for extracting core-collecting pipes used for the drilling of solid mineral resources, which is incorporated in the drilling unit above the rock-breaking tool. It comprises a housing, the opposite ends of which are connected to a top and a bottom adapter, respectively. The top adapter is threadably connected to the top of the housing, the bottom end of which is provided with face fingers which interdigitate with the face fingers of the bottom adapter, formed in its top end. The bottom adapter is connected via an internal thread in the bottom end to a rock breaking tool inside the housing there are disposed external spring rings and internal spring rings which form a cylindrical spring pack, the top end of which is in contact with the top adapter, while its bottom end is in contact with the top face of a spacing sleeve, which is seated on the top face of a carrying collar forming part of the bottom adapter.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: January 28, 1992
    Assignee: Geologoprouchvatelno Predpriatie
    Inventors: Nikolay D. Nenkov, Dimo S. Yordanov, Peter V. Nedyalkov, Evgeni D. Hromin
  • Patent number: 4577501
    Abstract: The present invention utilizes a wire wool slug packed inside a helical coil of an aircraft engine sensor in order to reduce vibration damage to the coil.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventor: Tyag R. Sehgal
  • Patent number: 4254837
    Abstract: There is disclosed a shock sub for incorporation in the lower part of a drill string for damping oscillations of the bit and drill string during drilling. The shock sub incorporates a spring assembly including a multiplicity of substantially annular ring springs that exhibit a spring rate of less than about 25,000 pounds per inch of deflection. This is a continuation of application Ser. No. 849,718, filed Nov. 8, 1977 now abandoned.
    Type: Grant
    Filed: April 12, 1979
    Date of Patent: March 10, 1981
    Assignee: Mustang Tripsaver Inc.
    Inventor: Kenneth R. Jones
  • Patent number: 4183510
    Abstract: A feature of this invention is a positively assembled, double acting spring buffer having all spring guides disposed within and extending the full length of the spring assembly.
    Type: Grant
    Filed: October 21, 1977
    Date of Patent: January 15, 1980
    Assignee: General Electric Company
    Inventor: George E. Kontis
  • Patent number: 4087085
    Abstract: An impact deflection absorber and stabilizer for providing an interface between two items, surfaces, etc. permitting regulated and controlled travel (energy absorption) along its longitudinal axis and constraining motion in all other directions. An energy absorbing spring is positioned within a housing comprised of two cylindrical mating surfaces forming a friction surface therebetween. A collar clamp joins the two cylinders together and adjustably controls the amount of friction between the two surfaces thereby providing control of the energy absorbing capability of the device. The clamp also has the effect of strengthening the device along non-longitudinal axes, such that all axes have a resonant or fundamental frequency higher than that along the longitudinal or primary axis whereby the device will yield longitudinally regardless of what direction the forces are emanating from.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: May 2, 1978
    Inventor: Henry K. Hauser
  • Patent number: 4006832
    Abstract: Apparatus for dampening the closing of a heavy door of the type mounted along a hinge axis on a heavy movable member such as a digging bucket for a shovel, said dampening apparatus comprises a crank pivotally mounted intermediate its ends on said movable member adjacent said hinge axis, linkage means pivotally mounted adjacent one end thereof on said door and pivotally connected adjacent an opposite end to one end of the crank, a cushioning device having a lower pivotal connection pivotally connected to the crank at the end thereof opposite from the first-mentioned end and an upper pivotal connection pivotally connecting the cushioning device to the movable member, and the cushioning device comprises a telescopic rubber snubber.
    Type: Grant
    Filed: June 18, 1975
    Date of Patent: February 8, 1977
    Assignee: Unit Rig & Equipment Co.
    Inventors: Marvin L. Auxer, Floyd E. McCann, Gerald D. Shepherd