Patents Examined by Allan D. Hermann
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Patent number: 4075906Abstract: A speed control system for an internal combustion engine having a variable speed throttle includes an operator input control member connected through suitable linkage to vary the setting of the variable speed governor and includes a balance mechanism having spring means operating in opposition to the reactive forces of the governor for providing a relatively uniform control feel over the range of the operator control member.Type: GrantFiled: August 6, 1976Date of Patent: February 28, 1978Assignee: Caterpillar Tractor Co.Inventors: James E. Schimpf, Lucien B. Shuler
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Patent number: 4060009Abstract: 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.Type: GrantFiled: October 23, 1975Date of Patent: November 29, 1977Assignee: Chrysler United Kingdom LimitedInventor: Howard John Wyman
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Patent number: 4051935Abstract: A torque-applying hand tool includes a stepless mechanism for turning an object in a desired direction through an unlimited range by swinging the handle thereof. The stepless mechanism comprises a polygonal shaft and rollers each being placed in touch with each side of the polygon shaft. Each roller is selectively forced to one end or the other of each side so that the polygon shaft may be turned in one direction when the tool handle is turned. At one end of the polygon shaft is formed a socket or box shaft to engage with the object to be turned. In such a tool, the stepless mechanism can be made compact with an unlimited turning range of the object.Type: GrantFiled: April 15, 1976Date of Patent: October 4, 1977Inventor: Eiji Nakayama
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Patent number: 4047601Abstract: A power transfer mechanism incorporated in a multiple path drive system comprising a transfer case disposed between a source of input torque and a pair of drive axles. Torque is transferred directly to one drive axle and is transferred automatically to the other drive axle through a double-acting overrunning clutch when required. The clutch is biased toward one engaged position, and is prevented from locking inadvertently in the other engaged position by a direction-sensitive blocking device.Type: GrantFiled: June 1, 1976Date of Patent: September 13, 1977Assignee: Borg-Warner CorporationInventors: Mark John Fogelberg, Donald William Kelbel
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Patent number: 4036083Abstract: A transmission having selectively engaged fluid actuated friction drive establishing devices and an engagement timing control system having a trimmer regulator valve for each drive establishing device, a trimmer bias regulator valve and accumulator. The oncoming trimmer valve has a spring biasing device responsive to engagement pressure to increase oncoming ratio drive engagement pressure at a controlled rate, initially at a high rate up to a minimum slack take up pressure, then to gradually increase the drive pressure from the minimum pressure at a low rate in a predetermined trimming time period for establishing the drive and then to increase the pressure at a very high rate to high line pressure. A trimmer bias system pressure is supplied to a bias chamber of the trimmer valves and acts in the oncoming trimmer valve bias chamber to increase the pressure level of the gradually increasing drive engagement pressure proportional to torque demand.Type: GrantFiled: August 28, 1974Date of Patent: July 19, 1977Assignee: General Motors CorporationInventor: Ted M. McQuinn
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Patent number: 4028946Abstract: A control lever assembly for controlled reciprocation of an operating member which may be a Bowden cable for regulating the flow rate of a pump supplying a hydraulic motor in a hydrostatic transmission. In addition to the usual pivotally mounted control lever, an intermediate lever is pivotally connected between the control lever and the operating member. The intermediate lever is received in a sleeve member which is pivotally mounted about a fixed axis spaced from the fixed axis about which the control lever pivots. The sensitivity of the control lever assembly is thus made smoother and more gradual proximate to the neutral or dead center position of the assembly.Type: GrantFiled: February 18, 1976Date of Patent: June 14, 1977Assignee: Albaret S.A.Inventor: Michel Paramythioti
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Patent number: 4022308Abstract: Corresponding sets of radially distributed helical surfaces in a cone clutch axially urge movable cone members selectively into engagement with either of two mating cone members thereby enabling a clutch output member or members to be driven in either rotary direction.Type: GrantFiled: April 23, 1976Date of Patent: May 10, 1977Assignee: Chrysler CorporationInventor: John W. Hurst
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Patent number: 4019403Abstract: A shock absorbing type steering device for use in a motor vehicle, comprising a shaft adapted to transmit a torque from a steering wheel to a steering gear, which shaft consists of a first solid shaft portion and a second hollow or cylindrical shaft portion. The second cylindrical shaft portion includes a small diameter portion and a large diameter portion. Part of the first solid shaft portion is rigidly fitted in the aforesaid small diameter portion of the second cylindrical shaft portion with the aid of shear pins, while a shock-absorbing resilient material is contained in the aforesaid large diameter portion of the second cylindrical shaft portion. The shock absorbing material is of such a property that it is ruptured due to stresses exceeding a given level. A passage leading from the interior of the aforesaid large diameter portion of the second cylindrical shaft portion to atmosphere runs either through the first solid shaft portion or through the second cylindrical shaft portion.Type: GrantFiled: January 2, 1976Date of Patent: April 26, 1977Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Takeo Kondo, Yoichi Hyodo, Hiroyuki Ono, Shiro Yuasa
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Patent number: 3961542Abstract: A cam operated control link mounts on the trunnion shaft of a transmission swash plate through an interposed elastomeric collar or bushing providing for both a damping of vibration transfer from the transmission to the controls and an initial deflection lag of approximately four degrees between rotation of the link and rotation of the trunnion shaft and associated swash plate. Limit pin means preclude an independent movement of the link relative to the trunnion shaft beyond pre-set extremes.Type: GrantFiled: January 10, 1975Date of Patent: June 8, 1976Assignee: International Harvester CompanyInventors: David A. Fulghum, John R. Badini
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Patent number: 3954161Abstract: A free-wheeling arrangement in which gripping rollers are arranged between an inner race and an outer race which is equipped with gripping surfaces and short abutment flanks; the gripping rollers are forced into the gripping position by springs which are supported on cross tongues of a cage formed by a sheet metal ring, out of which are punched out the cross tongues; the sheet metal ring of a cage is thereby fixed in the axial direction by the clamping-in action between the outer race and the structural part accommodating the same while an outwardly directed nose portion is provided at least at one cross tongue of each cage to prevent relative rotation, which engages in a cross groove provided in the inner contour of the outer race; a disk covers off the free-wheeling device which serves simultaneously as abutment for the gripping rollers.Type: GrantFiled: August 26, 1974Date of Patent: May 4, 1976Assignee: Daimler-Benz AktiengesellschaftInventors: Fritz Ehret, Otto Worner, Ulrich Juskowiak
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Patent number: 3949849Abstract: A temperature-responsive shear drive-type fan clutch including a bourdon tube arrangement for actuating the valve plate controlling flow of shear drive fluid from the reservoir chamber to the working chamber, and external chamber means containing a suitable thermal-sensitive expanding fluid adapted to cause the bourdon tube to straighten in response to increased ambient temperature.Type: GrantFiled: November 18, 1974Date of Patent: April 13, 1976Assignee: General Motors CorporationInventor: Dale F. Hammer
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Patent number: 3945477Abstract: A reversing mechanism for two clutches wherein one of the clutches is alternately blocked in lifted condition, comprising actuating means movable over a disengaging travel path, for selectively engaging and disengaging the non-blocked other clutch, means comprising a stepping mechanism and a reversing device, the actuating means being movable beyond the given actuating path and over a reversing path for actuating the means comprising a stepping mechanism and a reversing device, and a lifting device connected to the actuating means and actuable thereby for effecting engagement and disengagement of the non-blocked clutch over the disengaging travel path (I-II), and at least substantially over the reversing path (II-III) and in a force transmission path between the actuating means and disengagement member of the clutches, the lifting device being effective so that at least over partial ranges of the reversing path (II-III) a change in at least one of the path direction and the force transmission occurs, the liftType: GrantFiled: December 23, 1974Date of Patent: March 23, 1976Assignee: LuK Lamellen und Kupplungsbau GmbHInventors: Paul Maucher, Oswald Dubiel
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Patent number: 3943791Abstract: An articulated handle comprises a firm arm pivotally mounted on a stationary support and a second arm pivotally mounted on the first arm to pivot perpendicular relative to pivotal movements of the first arm. A lever is also pivotally mounted on the support and a connecting rod is pivotally interconnected between the lever and the second arm. The valve stems of adjacent control valves are operatively connected to the first arm and to the lever, respectively, whereby movement of the handle in one direction will actuate one valve and movement of the handle in a second, perpendicular direction will reciprocate the other valve.Type: GrantFiled: June 12, 1972Date of Patent: March 16, 1976Assignee: Caterpillar Tractor Co.Inventor: Robert Casey
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Patent number: 3943793Abstract: A collapsible steering wheel column of the resettable type for motor vehicles that progressively absorbs the energy of an operator's body which is thrust upon the steering wheel in an accident or crash. The steering column includes two longitudinally extending and telescopically slidable coacting members. The members are held in a normal operating position by a resilient torus between their interface and are rotatably coupled to each other. The torus is set in a radially inwardly facing annular recess of the outer member while the inner circumference of the torus is received in an opposing radially outwardly facing annular recess of the inner member to maintain a normal operating position until a disengaging impact force occurs. The outer member carries a shock-absorbing resilient pad with a central bore that is axially and radially engaged by a tapered conical portion on the other member upon telescoping movement. The pad progressively cushions and absorbs the energy from the impact upon the steering wheel.Type: GrantFiled: November 15, 1974Date of Patent: March 16, 1976Assignee: Caterpillar Tractor Co.Inventor: Robert N. Stedman
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Patent number: 3941000Abstract: An expanded scale timer has means adapted to be driven for indicating the operating time of the timer, and a pair of means are conjointly and relatively movable for respectively driving the indicating means at different predetermined speeds. Means is provided for effecting actuation of the driving means conjointly to drive the indicating means through one of the driving means at one of the speeds and for effecting actuation of the other of the driving means relative to the one driving means to also drive the indicating means at another speed with the one driving means being overridden by the indicating means.Type: GrantFiled: January 30, 1975Date of Patent: March 2, 1976Assignee: General Electric CompanyInventor: Ralph H. Allison, Jr.
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Patent number: 3941212Abstract: The invention concerns a clockwork motor, particularly but not exclusively, for toys, wherein an escapement consisting of a friction memeber that is pressed resiliently against a sliding surface moving with a part of the clockwork motor running down under the action of a mainspring, and wherein the pressure force for the friction member is arranged to be approximately proportional at any given moment to the driving force of the mainspring at the moment. The friction member is mounted on a carrier spaced from and movable relative to the sliding surface, and a stationary end of the mainspring engages with the carrier.Type: GrantFiled: March 13, 1975Date of Patent: March 2, 1976Assignee: Messrs. STELCO Speilwarenfabrik Stelter GmbH & Co. KGInventor: Walter Lechner
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Patent number: 3938634Abstract: A clutch mechanism of the rocker-shift type has a carrier member interposed between and affixed to one of a rotatable driving and a rotatable driven member. The carrier member has circumferentially spaced rocker arms, having normally self-disengaging clutch portions, that are adapted to be rocked radially, on at least one end thereof, by means of a shift yoke and collar, for selective rocking engagement into coupling engagement with adjacent corresponding normally self-disengaging clutch portions on the other of the driving and driven members.Type: GrantFiled: January 22, 1975Date of Patent: February 17, 1976Assignee: Clark Equipment CompanyInventor: Barry L. Frost
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Patent number: 3938632Abstract: A combination of a sprag clutch and a deep-groove ball bearing has a cage ring made of two identical radial halves. Each cage ring half has circumferentially spaced first recesses each accommodating and pivotally supporting a spring-biased sprag; circumferentially spaced alternating pockets for captively holding a bearing ball; and second recesses each nestingly receiving a bearing ball. The number of pockets and the number of second recesses in each cage ring half each equals one half the number of bearing balls in the ball bearing. The two cage ring halves are staggered with respect to one another to the extent of one bearing ball pitch, so that with any pocket on either cage ring half there is axially aligned a second recess in the other cage ring half.Type: GrantFiled: January 22, 1975Date of Patent: February 17, 1976Assignee: Ringspann Albrecht Maurer K.G.Inventors: Emil Giese, Ruprecht Maurer
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Patent number: 3935749Abstract: An improved starting apparatus is utilized in association with a starting motor to effect rotation of an engine ring gear. The starting apparatus includes a pinion gear which is movable from a disengaged position to an engaged position in meshing engagement with an engine ring gear. If the pinion gear teeth and ring gear teeth are misaligned as the pinion gear is moved toward the engaged position, a plurality of balls cooperate with surfaces of grooves extending transversely to the path of movement of the pinion gear to effect rotational movement of the pinion gear relative to the engine ring gear. This pinion gear rotation moves the pinion gear teeth into alignment with the engine ring gear teeth and thereby enables the pinion gear to move into meshing engagement with the ring gear.Type: GrantFiled: September 5, 1974Date of Patent: February 3, 1976Assignee: VLN CorporationInventor: Karl Groves
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Patent number: RE29520Abstract: An overrunning clutch is disclosed herein providing a structure whereby a drive and driven member are interconnected to provide a drive condition therebetween in one direction, of relative rotation thereof and an overrunning condition therebetween in the other direction of relative rotation thereof. A sprag assembly is shown in conjunction with the overrunning clutch and possesses a structure which provides for total disengagement of the sprags from the overrun portion of the clutch during the overrunning thereof.Type: GrantFiled: November 12, 1976Date of Patent: January 17, 1978Assignee: Borg-Warner CorporationInventor: Bryan P. Kent