Abstract: Piston rod assembly includes a piston head and rod which are formed separately and subsequently jointed together by injecting adhesive through a porting passage in the piston head into an annular space formed by an internal groove in the piston head and an external surface of the rod to provide a bonded joint therebetween. The piston head includes a radially enlarged center dam portion and a pair of reduced diameter end portions extending coaxially from opposite sides of the center dam portion. The internal groove extends axially beyond opposite sides of the center dam portion for a substantial portion of the length of the reduced diameter end portions. The reduced diameter end portions are externally tapered radially inwardly from opposite sides of the enlarged center dam portion toward opposite ends of the reduced diameter end portions to provide a gradual build-up of stiffness in the piston head from the opposite ends of the bonded joint toward the middle.
April 6, 1987
Date of Patent:
September 27, 1988
Pneumo Abex Corporation
Terry L. Benton, William Dirkin, Charles E. Lund
Abstract: Apparatus (10) for responding to incident electromagnetic radiation (16) to prevent direct transmission thereof when the magnitude of E-vector exceeds a predetermined value includes a first medium (12) through which incident electromagnetic radiation may be transmitted and smectic liquid crystal (14) positioned with respect to the first medium for responding to such E-vector to undergo Kerr effect in proportion to such E-vector so as to cooperate with such first medium to effect refraction of such electromagnetic radiation at an interface of the first medium and liquid crystal to prevent direct transmission of such radiation when the E-vector exceeds such predetermined magnitude. Smectic to nematic phase transition also may be used to prevent direct light transmission when incident radiation causes heating in the liquid crystal material.
Abstract: A guide carriage for a louvre blind has a bearing sleeve which is provided in a bushing forming part of a housing and in which a bearing pin is frictionally engaged, the bearing pin being provided at its lower end with a louvre holder for a vertical louvre. To provide a short distance between the louvre holder and the guide carriage, and simultaneously to provide simple removability of the louvre, the bearing pin is fixedly connected to the louvre holder, located in the bearing sleeve and may be removed from the sleeve simply by applying oppositely directed forces to the housing and the bearing pin along the axis of the pin.
Abstract: An assembly for supporting and storing paper, reference materials and other like items on a space divider and furniture system off of work surfaces includes paired hanging vertically extending brackets having one or more horizontally projecting cantilevered arms. Each bracket includes an upper hook and alternative forms of a lower foot which maintains the brackets vertical and the arms horizontal. The hook and feet are removably secured to the ends of the brackets and the alternative feet are employed depending on the height at which the assembly is mounted on the space divider system. The brackets may be mounted anywhere along the space divider system. The arms in turn support with a snap fit several forms or sizes of molded plastic trays which interconnect the paired brackets. The arms are circular in section and the edges of the tray are provided with downwardly turned circular edges which snap over the arms. Projections partially closing such openings assist in retaining the trays on the arms.
November 28, 1986
Date of Patent:
July 26, 1988
Douglas C. Ball, Roland A. Mentessi, Anthony S. Copeland
Abstract: An electrical box support for supporting an electrical box or other like device in a studded wall. The box support comprises a horizontal strut having a centrally located outwardly opening horizontally extending V-shape channel and a pair of legs formed at each end thereof. The purpose of the V-shape channel is to facilitate horizontal positioning or alignment of such boxes, to facilitate fastening, and also to strengthen the strut. Separating each leg of a leg pair is a cut-out which allows each of the legs to flex and bend independent of the other. To rigidify further and strengthen the box support, the invention further provides a pair of flanges or ribs formed along the lateral edges of the horizontal strut.
Abstract: A car carrier having a bed linked to the frame of a truck for movement from a horizontal position on the frame to a tilted car loading or unloading position in a single motion entailing simultaneous upward-rearward movement of the front end of the bed and downward-rearward movement of the rear end of the bed to ground-engaging position. The terminal portion of the tilting movement of the bed automatically compresses the rear springs between the frame and rear axle. The car carrier also has a wheel lift assembly including yokes on a rearwardly extending boom which are lowered to engage and lift the front on rear wheels of a second car responsive to partial tilting of the bed and to return of the bed to horizontal position. The boom and yokes are retracted forwardly to be disposed underneath the rear portion of the bed during loading and unloading of a first car onto or from the bed.
Abstract: A core for making elongate flexible clips having a plastic covering is a length of a flexible metal ribbon having transversely disposed slits cut into the edges of the ribbon. The ribbon includes a generally longitudinal carrier. The slits on opposite sides of the ribbon are longitudinally offset from each other. The core is covered with a plastic material. Thereafter the covered core is bent along one or more axes lying along the length of the core to form a clip. Because of the structure of the core, the clip may be extended longitudinally by tensile forces and resist longitudinal shrinkage in response to the compressive forces applied by the plastic covering.
Abstract: Nose landing gear jump strut assembly includes an outer main housing cylinder containing a jump cylinder which is normally retained in a retracted position but is extendable on command during the take-off ground roll of the aircraft to accelerate the outer main housing cylinder upward thus to rotate the nose of the aircraft upward and thereby increase the angle of attack of the aircraft. Within the jump cylinder is the main strut piston which is free to move relative to the jump cylinder except during extension of the jump cylinder, the main strut piston is hydraulically locked for movement with the jump cylinder. After the jump cylinder has been fully extended, and the aircraft starts to become airborne, the main strut piston will move to its fully extended position. Then the jump cylinder is retracted, while still leaving the main strut piston fully extended.
Abstract: A tire press having upper and lower cavity molds with a tire loader which is vertically and horizontally movable and has a chuck which grips a tire by the tread rather than the bead. The gripper has plural gripping shoes movable by bell-cranks and piston actuators. The chuck of the invention grips a tire by the tread and positions it adjacent a mold where the tire bead is gripped by a second chuck (not claimed) which deposits the tire in the mold.
Abstract: The conversion ceiling system disclosed may be installed immediately under a pre-existing ceiling without dismantling or removing the pre-existing ceiling. The conversion ceiling system includes pans which are adapted to cooperate with conventional inverted T-beams which, if pre-existing, support the pre-existing ceiling panels. The T-beams support the conversion pans in a side-by-side array to form a new ceiling surface. Each of the conversion pans includes a horizontally extending plate having a specially formed upwardly turned peripheral rim. At least two portions of the rim include laterally projecting tabs for engaging the flanges of T-beams and at least one of the tabs has an upstanding stop to limit the horizontal movement of the pan. The ceiling assembly may include a number of resilient clips securing the upstanding stops on the rims of the pans to the T-beams. Alternately, the pre-existing ceiling tiles may engage the stop to prevent horizontal movement of the pans.
Abstract: Pump assembly includes a rotatable handle with integral cams thereon to releasably retain the pump assembly within a receiver. During assembly, the pump assembly is initially inserted only part way into the receiver to a first intermediate non-operating position and then rotated a part turn to cause the cams on the handle to be engaged inside receiver lugs on the receiver housing which retain the pump assembly in a second intermediate non-operating position for pump drainage. While in such second intermediate non-operating position, the handle may be rotated between closed and open positions to respectively push the pump assembly further into the receiver to an operating position and pull the pump assembly back out to the second intermediate non-operating position. Seal means between the pump assembly and receiver are respectively engaged and disengaged during camming movement of the pump assembly between such operating and non-operating positions.
Abstract: Method of excavating overburden from a mineral or coal deposit seam using a low wall winch component, a high wall which component and a hoe. The hoe is attached to the low wall winch component by one or more draglines and the hoe is attached to the high wall winch component by a tail line.The method includes the steps of:(i) moving the hoe by tensioning of the draglines by the low wall winch component through overburden created by preliminary drilling and blasting to move said overburden away from the mineral or coal deposit seams in one or more traverses wherein overburden is loaded onto the hoe and subsequently dumped onto a spoil bank; and(ii) moving the hoe at the end of the or each traverse back to the starting point of the traverse by untensioning of the draglines by the low wall winch component and tensioning of the tail line by the high wall winch component.There is also included dragline apparatus including the aforementioned low wall winch component, high wall winch component, and the hoe.
Abstract: Compositions are described which are useful particularly in improving the electrodeposition of zinc from aqueous alkaline plating baths. In one embodiment, the new composition comprises a polymeric composition prepared by the process which comprises the steps of(A) preparing an intermediate by reacting(A-1) at least one nitrogen-containing heterocyclic compound with(A-2) an epihalohydrin, glycerolhalohydrin or mixtures thereof, and(B) reacting said intermediate with at least one amidine compound to form the desired polymeric composition.Aqueous alkaline zinc electroplating baths containing the compositions of the invention with or without cyanide present, deposit a bright and lustrous zinc coating on metal over a wide range of current densities.
Abstract: According to one aspect of the invention, a fluid mixer/charger includes an inlet for receiving input flowing fluid, the inlet including a flow directing portion for directing fluid in the first directional flow path, an outlet positioned to receive fluid flowing from the inlet to direct the fluid along a second directional flow path different from the first one, and a charging device for applying or removing electrical charge with respect to fluid during flow by at least one of the inlet and outlet. The invention functions as an electric capacitor with a fixed bleed rate to charge fluid.
Abstract: A stepless transmission including a fixed displacement rotary pump and an adjustable pressure compensated flow control valve which adjustably limits the output of the pump to any selected value between a predetermined maximum and a predetermined minimum whereat the pump housing and the pumping unit therein are locked against relative rotation. In the case of coaxial shafts fixed to the pump housing and pumping unit respectively, the driving shaft drives the driven shaft at the same speed less the speed corresponding to the adjusted limit of the pump even under varying load conditions on the driven shaft.In the case of an epicyclic train having input and output shafts fixed to selected gears of the train, the pump-valve assembly adjustably limits the speed of rotation of another gear of the train, thereby establishing a desired speed of the output shaft under varying load conditions.
Abstract: Landing gear mechanism includes a restrictor assembly containing a main orifice for controlling the rate of instroke of the landing gear mechanism during landing and a taxi instroke bypass valve which provides for increased flow of hydraulic fluid within the landing gear mechanism whenever the landing gear mechanism engages a bump during taxiing to reduce the damping loads that would otherwise occur if all of the hydraulic fluid were required to flow through the main orifice. The taxi instroke bypass valve assembly includes a slide member axially movable relative to the restrictor assembly for opening and closing one or more bypass orifices in the restrictor assembly. The slide member is held in the closed position whenever the landing gear mechanism is in a specified stroke range from fully extended by a secondary piston which is acted upon by the pressure in a precharged secondary chamber urging the secondary piston into engagement with a probe connected to the slide member.
Abstract: A grab assembly for handling articles such as hot and cold steel ingots and molds, characterized by multiple current relays and limit switches that enable selection of different grip forces. The assembly comprises complemental tongs, an electrically powered drive for actuating the tongs and compressing springs which resiliently restrain the tongs in gripping engagement with an article, an electrically operated holding brake for maintaining such resilient restraint of the tongs, and a selector for rendering operative any one relay and corresponding limit switch which redundantly operate to stop the powered drive and set the holding brake in response to motor current and spring compression reaching respective predetermined amounts corresponding to a respective desired gripping force at the tongs. Also disclosed is a crane employing the grab assembly.
July 21, 1986
Date of Patent:
March 1, 1988
AMCA International Corp.
Ronald L. Fenn, Tim Abblett, John Sanor
Abstract: A bath for use by a physically handicapped or physically impaired person, comprising a bath structure (11), a seat (13) located within the bath structure (11), said seat (13) being connected to a seat support (16), said seat support (16) being connected to a mechanical linkage (19) located externally of the bath structure (11), and means (29) for pivoting the linkage (19) in order to move the seat (13) between an upper position in which it is located at or above the upper edge of the sides of the bath structure (11) and a lower position in which the seat (13) is located at the bottom of the bath structure.