Abstract: An automatically stabilizing table has an elongate support structure (14) supporting a table top (12) at an upper end and having a first pair of feet (50) at a lower end. An elongate guide formation (38) projects from a lower end of the support structure. A displaceable support member (30), having a second pair of feet (32), is engaged with the guide formation such that the displaceable support member is slidably displaceable along the guide formation and is automatically frictionally engageable with the guide formation in response to pivoting of the displaceable support member about a pivot axis which is transverse to the guide formation, to anchor the displaceable support member frictionally against sliding displacement relative to the guide formation. A pair of springs (48) is provided to urge the support member downwardly. The support member is located in channel shaped spokes (20) to inhibit swiveling thereof on the guide formation.
Abstract: The invention relates to a self-stabilizing support assembly (14) for an item of furniture, such as a table, stool or chair. The assembly includes a support structure (16) for connection at an upper end thereof to an upper portion of an item of furniture. The support structure has a first pair of feet (50) at a lower end (22) thereof. An elongated guides pin (38) projects from a lower end of the support structure. A displaceable support member (30), which has a second pair of feet (32), is provided with a housing (36) defining a guide passage, in which guide passage the guide pin is longitudinally slidably received.
Abstract: A pivotal rocking chair base is provided which allows the ultimate chair user to select or eliminate the rotational movement of the chair base. Also, by making adjustments to front and rear turnbuckles the amount or degree of tilt or rocking action of the seat can be chosen. An infinite variety of adjustments is thus available to the user to customize the chair motion for his particular purposes and comfort.
Abstract: A manufacturing process, such as that used for ultrasonic welding, employs a self-leveling fixture (20) including a base (12) and an operation stage (14) that are separated by leveling devices (16) and 18). The leveling devices include a centrally located spherical plane bearing (16) and one or more spring members (18) disposed about the periphery of the operation stage. In this way, the operation stage can react in response to pressure applied thereto complying to the applied pressure, thus providing a realistic self-leveling feature. After the pressure is removed, the return to a normal position via the spring action of spring (18).
Abstract: A Vehicle Support System comprising a plurality of dollies joined by a common axle. Each dolly sets upon a pair of tandem mounted castors which are free to rotate and pivot in any direction. In addition, at least one castor on each dolly is equipped with a castor brake. Each dolly further comprises a clevis which accepts the support point of the vehicle. Upon installation, the Vehicle Support System allows the vehicle to be moved about to a suitable location and then, by means of the castor brakes, fixed at that location.
Abstract: A load cell having a measurement beam and a pivotal support for either coupling a load to the beam or supporting opposite ends of the beam. In one embodiment, opposite ends of a beam are secured to the upper surface of a frame, and the load is applied to the upper surface of the beam at its mid-point through a load applying member and a sphere positioned between the load applying member and the beam. Bolts positioned symmetrically about the sphere pass loosely through the load applying member and are threaded into the beam. The bolts maintain the sphere in contact with the load applying member and beam while allowing relative angular movement between the beam and the load applying member. In another embodiment of load cell, opposite ends of a beam are supported on a frame through respective, generally spherical members, and the load is applied to the center of the beam.
Abstract: An apparatus and method for mounting a range finding instrument to a theodolite telescope incorporates the necessary geometry to enable a linear spring assembly to be able to accurately balance the mass of the range finder and theodolite combination rotating in a vertical plane about a pivot point defining a first axis. In a particular embodiment of the mounting system, two compression springs are mounted in a single straight spring tube which is attached to the range finder but is allowed to rotate about a second axis. The resultant geometry of the arrangement provides a substantially exact balance for the weight of the range finder irrespective of the vertical angle of the theodolite telescope.
Abstract: A seat suspension for resiliently mounting an operator's seat on a vehicle for floating movement in fore-to-aft and vertical directions. The seat suspension includes a base part that has lower front and rear pivot axes and a lower spring end seat; and a support part on which the operator's seat can be mounted with the support part having upper front and rear pivot axes and an upper spring end seat. One of the spring seats has a fulcrum and a lateral movement retainer while the other spring seat has an anchor. Front and rear links pivotally interconnect the upper and lower front pivot axes and the upper and lower rear pivot axes, respectively. Compression springs each having an axis and spaced apart upper and lower end portions that are generally transverse to the spring axis are mounted between the base part and the support part. One transverse end portion of each compression spring is mounted in the anchor and secured thereby against movement.
Abstract: A concrete mixer truck frame is distorted when a concrete truck traverses a rough road and when the vehicle turns. Flexible mounting of pedestals which support the mixer drum accommodates distortion of the frame yet provides a rigid platform for the mixer drum. Each pedestal includes an upright frame with lower ends connected to side frame members with self aligning bearings. A central portion of a pedestal is flexibly connected to an upper part of a diagonal link with self aligning bearings. The truck frame includes "C" shaped cross members connected to the side frame members. A lower end of the diagonal link is flexibly connected to one of the cross members so that the load passes through the shear center of the "C" shaped cross member.
Abstract: A mounting apparatus for a transit mixer support frame and pedestals including flexure joints and rotational joints. The flexure joints allow the front of the front pedestal and the back of the rear pedestal to move both vertically and laterally in response to conditional and dynamic loading of the transit mixer frame. The back of the front pedestal and the front of the rear pedestal are connected to the transit mixer frame through rotational joints. The rotational joints include support tubes extending transversely to the frame. Journal bearing portions are connected to the frame and fitted about the support tubes. The preferred embodiment of flexure joints utilize spring loaded bolts on the front of the front pedestal and the back of the rear pedestal. A second embodiment utilizes a transverse member with an oversized slot. A pin is connected to the pedestal and may move longitudinally and laterally within the slot.
Abstract: Upper and lower relatively rotatable members are provided with the upper member angularly displaceable relative to the lower member about an upstanding axis. The upper member includes first front and rear portions disposed forward and rearward of the axis and a seat amount is supported and projects upwardly from the upper member. A seat support member including second front and rear portions overlying the first front and rear portions is provided and is pivotally attached to the mount for oscillation about a horizontal transverse axis adjacent the upstanding axis. The seat support member may support a seat therefrom with the front and rear portions of the seat overlying the second front and rear upper member portions and expansion springs are connected and extend between the first and second front portions yieldingly resisting upward movement of the second front portion relative to the first front portion.
Abstract: A suspension system for a washing machine including a tub assembly having an outer stationary tub and an inner clothes receiving tub mounted for rotation on a central shaft extending downwardly through the lower wall of the stationary tub, comprises a first support cup defined in the base of the washing machine, support legs spaced about the periphery of and attached at first ends to the outer tub and at opposite ends to a second support cup shaped complementarily to the first cup. In a preferred embodiment, the shape of the support cups is a truncated hemisphere. The second support cup is received in the first cup to support the tub assembly on the base. A plurality of spring members are provided about the periphery of the outer tub, extending between the last mentioned tub and base to aid in stabilizing the tub assembly.
Abstract: A rocker box for furniture and the like, comprising: a rockable top plate having two pairs of parallel laterally-spaced outer-depending side and inner-depending supplementary flanges containing perforations cooperatively providing four pivot-receiving openings on a common transverse axis, one outer side and one inner supplementary flange being located at each of the opposite sides of the box, each inner supplementary flange being spaced inwardly from the corresponding outer side flange so as to cooperate therewith in delimiting an interposed upper flange space; a non-rockable bottom plate having one pair of parallel laterally-spaced outer upright side flanges, one for each upper flange space, each upright side flange projecting upwardly from the bottom plate into the corresponding upper flange space where it is parallel to the corresponding depending side and supplementary flanges, said pair of upright flanges cooperatively providing two more pivot-receiving openings on said common transverse axis; and a pair
October 3, 1977
Date of Patent:
January 27, 1981
Roy F. McMahan, Jr., William L. McMahan
Abstract: A rear view mirror for a motor vehicle of the kind having a stationary housing relative to which the reflective element is adjustable to give the required rear view has a housing which is moulded in self-skinning foam plastics. The housing has resilient pillars which bear on the back of the reflective element near its periphery. The pillars extend from the part of the housing behind the reflective element. Vibration of the reflective element is damped by contact with the resilient material of the housing and the reflective element is kept in its adjusted position. This is very useful when the reflective element is adjustable by remote control.
Abstract: A shock absorber device is provided including a lower cup-shaped part covered by a first diaphragm to define an air chamber and a second diaphragm is disposed in spaced relation above the first diaphragm to define an oil chamber with a piston element being engaged with the second diaphragm to operate through the oil to control pressure applied from the first diaphragm to air in the air chamber. The piston element supports a plate through balls seated in recesses such that horizontal displacement of the plate is translated into vertical displacement of the piston element, the plate being arranged to support a machine to be supported, or a portion thereof. The area of the piston element and the area of the first diaphragm have a ratio therebetween such as to match the requirements of a particular machine and to minimize transmission of shocks and vibrations.