Abstract: An improved rotatable mass for a flywheel characterized by a plurality of coaxially aligned, contiguous disks mounted on a spin shaft, each disk of the plurality being formed of a plurality of woven fibers disposed in a plane transversely related to an axis of rotation with the fibers of alternate disks being continuous throughout their length, while the midportion of the fibers of the remaining disks of the plurality is removed for defining annular voids concentrically related to the spin shaft.
November 14, 1975
Date of Patent:
July 4, 1978
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
Abstract: A blocking device for vehicle reel-type safety belts with a ratchet wheel to be connected to the reel of the safety belt, a pair of pivotal pawls engageable with the ratchet wheel to prevent rotation of the ratchet wheel and thus the reel in one direction of rotation of the reel, a mechanism operable by an abnormal change of speed of the vehicle, capable of pivoting one of the pawls into engagement with the ratchet wheel and then said one pawl pivots the other of the pawls into engagement with the ratchet wheel stopping the unwinding of the safety belt.
Abstract: A double Cardan universal joint has elastomeric centering means comprising an elastomeric pad carried by the input yoke which acts of the input cross member to bias it toward a perpendicular position with respect to the longitudinal axis thereof. A second elastomeric pad secured to the intermediate yoke which acts on the input and output cross members to bias the cross members toward a perpendicular position with respect to the longitudinal axis thereof, and a third elastomeric pad carried by the output yoke which acts on the output cross member to bias it toward a perpendicular position with respect to the longitudinal axis thereof.
Abstract: A telescoping universal joint comprising a driving member, a driven member, torque transmitting means between the driving and driven member, and means for limiting the relative axial movement in both directons between the driving member and the driven member. The universal joint is described as being utilized together with a second universal joint in a transverse drive line of an automotive vehicle between a differential and a wheel or in a longitudinal drive line between a transmission and a differential.
Abstract: A universal joint adapted for use in high impact wrenches is disclosed. The universal joint comprises a tubular housing having a first end and a second end. A first ball joint having an input shaft with a ball member disposed at one end thereof and an attaching head disposed at the other end thereof is coupled to the tubular housing adjacent the first end thereof. A second ball joint having an output shaft with a ball member disposed at one end thereof and a socket head disposed at the other end thereof is coupled to the tubular housing adjacent the second end thereof. An external spring is disposed about the output shaft and journaled between the socket head and the second end of the housing. The external spring is arranged and configured on the universal joint so as to increase the flexibility of the second ball joint and to cause the second ball joint to return to axial alignment with the tubular housing after each use.
Abstract: A rotor to be balanced has an annular cavity containing two balls free to roll around the cavity. An initially inert thermo-setting adhesive is coated around the cavity. The rotor is rotated to a speed just above its first resonant frequency of vibration and the balls take up balancing positions in the cavity counter balancing the out of balance of the shaft. The adhesive is activated by a temporarily placed external heat source to permanently lock the balls in the balancing position so that the shaft is permanently balanced.
Abstract: A multi-shaft gas turbine has an inner shaft rotatably supported at opposite ends thereof with one end adapted to be connected to a load and the other end to a turbine wheel with a tubular section that receives a balance tube removably mounted within the shaft and accessible from the aft end of the engine by removal of an inner exhaust cone and a bearing pump cover. The balance tube includes front, rear and intermediate circumferentially arranged splined lands that bear balance weights angularly positioned on the tube prior to insertion thereof into the shaft, each of the weights having a peripheral surface thereon for locating the longitudinal axis of the balance tube colinearly of the longitudinal axis of the inner shaft.
Abstract: Apparatus for converting oscillatory motion to reciprocating motion featuring the use of thin, non-permanently deformable band-like members confined to a linear track so as to be reciprocable when one end of the band-like member is engaged by an oscillatory shaft. The other end of the band-like member may be secured to a work element used for exerting force against a work object. Selection means may be employed in apparatus having a plurality of band-like members in which each of the members can be selectively induced into engagement with a shaft or other oscillatory means to control the work elements as desired.
June 25, 1976
Date of Patent:
November 22, 1977
Abram N. Spanel
Abram N. Spanel, P. Frank Eiland, David R. Jacobs
Abstract: The specification discloses six embodiments of a torque transmission coupling employing one or more pilot rings each of which has at least one precision-finished radially symmetric surface to align one or more laminar flexing elements in or on one or more complementary precision-finished radially symmetric surfaces on one or more hubs integral with or adapted to be connected to shafts for the transmission of rotary power. The preferred embodiment comprises a relatively inflexible torque transmission member, a laminar flexing element aligned with the torque transmission member at either end thereof via a pilot ring, and a hub aligned with each of the laminar flexing elements via a further pilot ring on the opposite side of the flexing elements from the first pilot ring, but embodiments are disclosed dispensing with the torque transmission member and with one of the pilot rings on each laminar flexing element.
Abstract: A telescoping torque transmission apparatus including an inner mandrel of upper and lower sections, a sleeve surrounding the mandrel and slidable thereon, a splined drive connection between the sleeve and mandrel with drive keys interposed between all drive surfaces of the spline drive, cartridge seals sealing above and below the spline drive and also defining upper and lower balance chambers between said mandrel and said sleeve, a port through said sleeve communicating with one of said chambers, a port through said mandrel communicating with the other of said chambers, a keyed lock ring having teeth to engage teeth on the upper end of the lower mandrel section and keyed to engage in the spline key ways of the upper mandrel section, a lock ring threaded on the lower end of the upper mandrel section to retain the keyed lock ring in engagement with the lower section teeth to prevent unthreading of the lower mandrel from the upper mandrel and a pressure equalizing valve communicating with the spline drive chambe
Abstract: A sliding constant velocity universal joint comprises an annular outer joint member having an axially extending portions interconnecting the adjacent two grooves of the outer member. Every axially extending portion makes a line-to-line contact with spherical outer surface portion of a ball retaining cage to provide two spaces on the opposite sides of the contacting portion of the axially extending portion.
Abstract: A spring drive mechanism which is particularly suitable for mobile toys, for example, such as small toy autos. In a spring drive mechanism of the above-mentioned type, in that the axle of the reversing pinion is a portion of a spring wire which is retained in spring drive mechanism plates, whereby a spring portion which is located on the side of the elongate aperture is constructed as an abutment for displacing the axle of the reversing pinion to thereby form the drive connection. The inner hook-shaped constructed end of the drive spring engages behind a projection on the spring core shaft. When the spring is unloaded, this construction allows for the spring core shaft to further rotate, since the now stationary or more slowly rotating inner end of the spring will not hinder the further rotational movement of the spring core shaft.
Abstract: A coupling for use between two rotating shafts in a high-temperature, high-vacuum environment is described. The coupling includes a socket having two closed loop, axially spaced, interior bearing surfaces and a roller having two closed loop, axially spaced, exterior bearing surfaces for rolling contact with the interior bearing surfaces of the socket. The interior and exterior bearing surfaces make rolling contact at two radially opposed and axially spaced locations, and the second shaft is disposed at a desired angle with respect to the first shaft. Means are provided for preventing disengagement of the roller and shaft as they rotate. In a preferred embodiment, the angle between the shafts is constant as they rotate and the roller is sized so that it is easily removed from the socket when the axes of the shafts are approximately aligned.
Abstract: The spline mandrel and barrel are formed with longitudinally extending, circumferentially spaced grooves in their outer and inner surfaces respectively. Composite splines are inserted into the grooves to key the mandrel and barrel together. Each spline comprises a rigid core having a slab of deformable material, such as urethane, bonded to the core face which slides and drives the driven tubular part. In a preferred form, the spline barrel is formed in two pieces. The spline-receiving grooves are formed at the upper end of the lower barrel section. The threaded pin of the upper barrel section locks the splines in the grooves. Because the splines are spaced downwardly from the end of the barrel, the mandrel has an ungrooved, thick-walled upper section which provides desired strength. Seals are provided at the upper end of the barrel and on the spline mandrel to form an annular chamber, containing the splines, filled with lubricant.
Abstract: A viscous shear rotary coupling comprises a rotary member mounted coaxially within a rotary housing is rotatable relative to the housing and has surfaces which are close to but spaced from internal surfaces of the housing. The spaces between these surfaces are occupied, in operation of the coupling by a viscous liquid. The rotary member is made up from a hollow steel shaft on which is secured, as by pressing, adhesive bonding, casting or friction welding, an element which is generally of disc form and which is made from aluminium.
October 2, 1975
Date of Patent:
September 27, 1977
Jeffery Frederick Andrews, Harjinder Singh Chauhan, Ian Trevor Bristow
Abstract: A drive coupling for interconnecting a pair of rotatable shafts includes a rigid spider that has four coplanar arms. Adjacent arms of the spider are oriented generally perpendicular to each other. A rigid element is disposed between each pair of adjacent arms of the spider. A body of elastomer is secured between each rigid element and each adjacent arm of the spider. One pair of diametrically opposed rigid elements can be connected to one of the rotatable shafts. The other pair of diametrically opposed rigid elements can be connected to the other rotatable shaft. When torque is being transmitted through the coupling, the bodies of elastomer are loaded primarily in compression. Angular misalignment of the shafts is accommodated primarily by shear deflection of the bodies of elastomer.
Abstract: A control coupling in which an enclosure houses first and second sets of mutually interleaved elements in a viscous liquid. The first and second sets of elements are arranged for rotation about a common axis and for driving connection with first and second rotatable members respectively. A clutch is provided outside the enclosure and resilient means are arranged to urge the clutch into a disengaged state. A pressure responsive means which is in communication with the enclosure is arranged to engage the clutch against the action of the resilient means when the pressure in the liquid in the enclosure attains a predetermined level.
Abstract: A safety steering-wheel has a rim situated in front of a central hub of the wheel. Only two legs are fixed to the rim and are inclined therefrom rearwardly toward the central hub, these legs when projected onto a plane which contains the rim extending along radii of the latter which are situated relatively close to each other. At least one of these legs is fixed to the hub. Fixed to the hub or at least one of the above legs is a substantially gallows-shaped complementary portion which is situated in the vicinity of the hub, with this complementary portion situated behind the plane of the rim but forwardly of the hub. The above legs and complementary portion when projected onto a plane which contains the central axis of the hub form a substantially V-shaped configuration, the crest of which is situated adjacent the hub, the complementary portion being inclined oppositely to the legs and extending to the side of the hub axis opposite from the legs.
July 11, 1975
Date of Patent:
September 13, 1977
Jean-Guy Pierre Denis Lecart, Jean Claude Amalberti
Abstract: A single control lever .[.pivotally.]. .Iadd.with an internal junction .Iaddend.actuating a latch .[.progressively.]. .Iadd.by progressive pivoting .Iaddend.in a first and a second plane. When it is desired to change from one to another of two transmission gear set levers, the latch is pivoted from a gap contained therein through a fixed gate into a gap contained in the other transmission gear set lever. The shift being possible only when the two gaps and the gate define a common plane.