Patents Assigned to Microdot Inc.
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Patent number: 4601622Abstract: A bolt is provided with a male thread, an end portion of which is of modified configuration, for acceptance in an element having a female thread of standard configuration. The modified portion of the male thread has a wedge ramp at the root thereof and a decreased pitch relative to the standard pitch of the thread on the female element which, in combination, results in optimum distribution of stress in the bolt as well as a prevailing torque relationship between the bolt and female element.Type: GrantFiled: May 11, 1981Date of Patent: July 22, 1986Assignee: Microdot Inc.Inventor: Lyman R. Lyon
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Patent number: 4594039Abstract: A fastener comprising a nut with V-threads modified to have a wedge ramp between adjacent flanks at the root thereof and characterized by the uniform pitch of the nut thread being a predetermined amount greater than the uniform pitch of the bolt thread which, in combination with the wedge ramp, results in optimum stress distribution within the bolt as well as a prevailing torque and anti-vibration relationship between the nut and bolt.Type: GrantFiled: May 11, 1981Date of Patent: June 10, 1986Assignee: Microdot Inc.Inventor: Erwin C. Witte
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Patent number: 4588248Abstract: A socket for the reception of a bulb comprising a housing having an elongated cylindrical aperture for the acceptance of a multipurpose resilient grommet in sealing relationship, an electrically conductive wire extending through the central bore of said grommet, and an internal terminal strip that effects wiping of the conductive wire upon insertion and removal of a bulb.Type: GrantFiled: January 30, 1985Date of Patent: May 13, 1986Assignee: Microdot Inc.Inventor: Marvin W. Moore
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Patent number: 4586556Abstract: A quick change guide ring for a bottom pour ingot mould system to effect positioning of a plurality of moulds relative to outlets in a sprue plate.Type: GrantFiled: July 11, 1984Date of Patent: May 6, 1986Assignee: Microdot Inc.Inventors: Paul D. Eckenrode, Richard P. Eisenbrei
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Patent number: 4586861Abstract: An internal thread configuration for use in nuts and threaded holes has a wedge ramp root section that is convexly curved so that a portion thereof is substantially parallel to the axis of the threads.Type: GrantFiled: July 28, 1980Date of Patent: May 6, 1986Assignee: Microdot Inc.Inventor: Arthur J. McKewan
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Patent number: 4580964Abstract: A method and apparatus for loading an array of articles into a front loading molding press. Two pairs of rails and two carriages are utilized to facilitate the various loading movements. The first or lower pair of rails is fixed and slidably mounts the first or lower carriage. The second or upper pair of rails is defined on the lower carriage and slidably mounts the upper carriage. A loading board is carried on the upper carriage and is mounted for up and down movement relative to the upper carriage. A predetermined array of loading heads are positioned on the underside of the loading board and a predetermined array of article holders are positioned between the forward portions of the lower pair of rails.Type: GrantFiled: July 26, 1984Date of Patent: April 8, 1986Assignee: Microdot Inc.Inventor: James A. Repella
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Patent number: 4579514Abstract: An apparatus and method for loading a front loading molding press in which a loading board is pivoted at one edge on a horizontal pivot shaft which extends into a lower corner of the press opening adjacent one side of the mold in the press. Loading of the press is performed by loading the board with a predetermined array of articles to be molded while the board is in an upwardly pivoted oblique preloading position to one side of the press opening; thereafter pivoting the loaded board downwardly to a loading position directly in front of the press; thereafter sliding the board on the pivot shaft into the press opening to an unloading position directly overlying the mold; and thereafter discharging the articles downwardly onto the mold.Type: GrantFiled: July 26, 1984Date of Patent: April 1, 1986Assignee: Microdot Inc.Inventor: James A. Repella
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Patent number: 4574609Abstract: A nut forming apparatus in which a pair of identical die assemblies are housed in a pair of diametrically opposed boxes in a rotary block and rearward movement of the die assembly relative to the rotary block at a first die station is precluded but rearward movement of that die assembly is allowed as it is moved to a second die station by rotary movement of the rotary block. A fixed back pierce pin, associated with each die assembly, is thus inoperative in response to a front forming blow struck by a punch positioned at the first die station but operates to back pierce the nut blank upon rearward movement of the die assembly in response to a front forming blow struck by a punch positioned at the second die station. A pair of cammingly interfaced cylindrical members associated with each die undergo relative rotation as the die assembly is moved by rotation of the rotary block between the first and second die stations to respectively preclude and allow rearward movement at that die assembly.Type: GrantFiled: March 21, 1984Date of Patent: March 11, 1986Assignee: Microdot Inc.Inventor: Imre Berecz
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Patent number: 4574461Abstract: A workpiece holder module for handling annular seals comprising a retainer module, a motor positioned beneath the module and having a hollow drive shaft extending upwardly and drivingly into the bottom of the module, and an air supply structure including a hollow column fixedly and centrally positioned beneath the motor with its upper end rotatably and sealingly receiving the lower end of the hollow motor drive shaft. The retainer module includes an upwardly opening cup-shaped casing centrally receiving the upper end of the hollow motor drive shaft, a resilient retainer ring positioned on the upper annular edge of the casing sidewall, and a central plug member secured to the upper end of a central post portion upstanding from the base portion of the casing. The annular seal includes an outer metallic ring adapted to be frictionally retained within the resilient retainer ring and an inner elastomeric ring adapted to seat on the central plug member.Type: GrantFiled: July 26, 1984Date of Patent: March 11, 1986Assignee: Microdot Inc.Inventor: James A. Repella
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Patent number: 4569628Abstract: A transfer mechanism in which the jaws for gripping and transferring the workpiece are mounted for rotation with a pivot shaft so that the jaws are translated between spaced work stations as the pivot shaft is rotated, and a cam member rotates with the pivot shaft and also slides axially along the pivot shaft for camming coaction with the jaws to selectively open and close the jaws in any angular position of the pivot shaft and in any translatory position of the jaws.Type: GrantFiled: December 27, 1983Date of Patent: February 11, 1986Assignee: Microdot Inc.Inventor: Imre Berecz
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Patent number: 4566747Abstract: An electrical connection system is disclosed comprising a female connector that accepts a complementary male post terminal. The female connector has an elastically deformable locking tab therein that locks into the male terminal. An insulating housing on said female connector is movable relative to both said female connector and said male terminal to effect disassociation therebetween.Type: GrantFiled: July 26, 1984Date of Patent: January 28, 1986Assignee: Microdot Inc.Inventor: Robert P. Peers
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Patent number: 4554723Abstract: A method and apparatus for transferring workpieces to successive work devices. The apparatus comprises concentric turntables mounted for rotation about a common central axis. A series of work devices are mounted on the inner turntable and a series of workpiece holder devices are mounted on the outer turntable. The turntables are rotated in the same direction and in synchronism while the various work devices respectively perform work operations on the various workpieces held in the various workpiece holder devices, whereafter the inner turntable is accelerated and the outer turntable is decelerated until the various workpieces reach a position midway between successive work devices, whereafter the inner turntable is decelerated and the outer turntable is accelerated until the workpieces arrive at positions of alignment with the next successive work devices.Type: GrantFiled: July 26, 1984Date of Patent: November 26, 1985Assignee: Microdot Inc.Inventor: James A. Repella
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Patent number: 4546833Abstract: The disclosure relates to a torque responsive control system for a powered fastener driving tool having a reciprocable control rod for controlling the supply of power to the motor thereof. The torque responsive system features a plurality of ball pins that extend between front and rear ball pin retainers so as to be movable between a circumferentially extending drive position and an axially extending motor shut down position.Type: GrantFiled: December 27, 1983Date of Patent: October 15, 1985Assignee: Microdot Inc.Inventors: Imre Berecz, Dennis L. Hinton
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Patent number: 4540321Abstract: An internal V-thread form has a concave following flank for engagement with the crest of an external thread.Type: GrantFiled: September 18, 1980Date of Patent: September 10, 1985Assignee: Microdot Inc.Inventor: Imre Berecz
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Patent number: 4526386Abstract: A piston seal assembly comprises a seal element of relatively hard material to resist extrusion. The element is of serpentine configuration to facilitate radial expansion. Backup elements nest with the seal element to stabilize the element within a complementary piston groove.Type: GrantFiled: April 23, 1984Date of Patent: July 2, 1985Assignee: Microdot Inc.Inventor: James A. Repella
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Patent number: 4512544Abstract: A bottom pour ingot mould system and more particularly a sprue plate having a plurality of horizontally extending runners therein and a plurality of upstanding guide pads spaced from the horizontal runners to effect positioning of each mould relative to an outlet in a horizontal runner. Molten steel is poured down a vertical runner, after which it moves horizontally then upwardly into the ingot mould.Type: GrantFiled: September 1, 1982Date of Patent: April 23, 1985Assignee: Microdot Inc.Inventors: Paul D. Eckenrode, Richard P. Eisenbrei, James E. Nixon
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Patent number: 4497496Abstract: An oil seal element and method of manufacture thereof from polytetrafluoroethylene or the like. A tubular billet having concentric inner and outer cylindrical surfaces is provided with a frusto-conical end face. Arcuate slits of varying depth and angle are cut in the end face of the billet at each of a plurality of angularly spaced positions. Indexing of the billet is synchronized with rotation of the slitting tool. A disk of desired thickness having arcuate slits on one of its faces is then sliced from the billet, thereby also facing the billet for the next slitting sequence.Type: GrantFiled: April 23, 1984Date of Patent: February 5, 1985Assignee: Microdot Inc.Inventor: James A. Repella
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Patent number: 4490587Abstract: A switch assembly comprising a flexible face cover membrane; a flexible keyboard membrane positioned immediately below the face cover membrane and including a base portion and a plurality of raised hollow contact pad portions projecting upwardly from the base portion through openings in the face cover member; a flexible printed circuit board membrane positioned below the keyboard membrane for switching coaction with the contact pad portions of the keyboard membrane; and adhesive means bonding the membranes together into a thin, flexible sealed switch sandwich. In one embodiment of the invention, the keyboard membrane is formed of a non-conductive elastomeric material and conductive elastomeric buttons are secured to the underside of the contact pad portions of the keyboard membrane for coaction with printed circuitry on the upper surface of the circuit board membrane.Type: GrantFiled: April 7, 1983Date of Patent: December 25, 1984Assignee: Microdot Inc.Inventors: Paul H. Miller, Charles D. Stelzner
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Patent number: 4482062Abstract: The invention relates to a carded goods merchandiser comprising a plurality of like racks each of which has a plurality of horizontally extending vertically spaced fingers thereon and a like plurality of vertically spaced apertures horizontally aligned with said fingers. The fingers of each rack are accepted in the apertures of an adjacent normally related rack to form a rigid free standing rectangular array. The fingers on each rack have vertical web portions that are accepted in vertical slots of merchandise mounting cards.Type: GrantFiled: November 1, 1982Date of Patent: November 13, 1984Assignee: Microdot Inc.Inventor: David L. Huntsberry
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Patent number: 4479747Abstract: The disclosure relates to a fastener assembly comprising a nut and a washer that insures a minimum preload on the nut and bolt assembly by load indicator means which also maintain the nut and washer in a joint preassembly.Type: GrantFiled: April 21, 1983Date of Patent: October 30, 1984Assignee: Microdot Inc.Inventor: Paul V. Pagel