Patents Represented by Attorney Edward B. Hunter
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Patent number: 4194569Abstract: A fire extinguisher of the type comprising a burstable container adapted to provide a high mass flow rate of discharged extinguishant is provided with venting means so adapted to direct the flow of extinguishant from the container that the reaction forces upon the container during discharge of extinguishant compensate one another to reduce the resultant force upon the container.Type: GrantFiled: November 21, 1977Date of Patent: March 25, 1980Assignee: Richard Charles HeathInventor: Richard C. Heath
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Patent number: 4194699Abstract: An apparatus for cutting and conveying material, comprising a container with an insertion aperture, cutting and conveying means and outlet means, the apparatus having above the bottom of the container cutting means for cutting grooves in the material and conveying means for conveying the material between the grooves.Type: GrantFiled: February 23, 1978Date of Patent: March 25, 1980Inventor: Mogens Berthelsen
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Patent number: 4193961Abstract: A method of extruding multi-filament polypropylene yarn in which the polypropylene is extruded at a temperature below 425.degree. F., such as in the range 415.degree. F. to 350.degree. F., particularly about 400.degree. F., into a hot zone having a temperature sufficiently high to retard cooling of the extruded polypropylene yarn. The temperature of the hot zone can be within 60.degree. F. of the temperature of extrusion. The yarn is then passed through a quenching zone across which air is blown to cool the yarn. The swell value of the polypropylene can be less than 3 and its melt flow may be greater than 30. The yarn is drawn down in the hot zone and the filaments may be drawn down to an undrawn denier of less than 40.Type: GrantFiled: April 4, 1978Date of Patent: March 18, 1980Assignee: Kling-Tecs, Inc.Inventor: John S. Roberts
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Patent number: 4193962Abstract: Apparatus and method are described for extruding filaments of thermoplastic material, particularly polypropylene, by liquid quench melt spinning in which a baffle arrangement is disposed in the quench liquid around the location where the filaments enter to reduce turbulence, vortexing, and liquid level variation. The baffle arrangement forms an opentopped box-like structure with two quench liquid inlet apertures and one quench liquid outlet aperture. Yarn guides are disposed inside this structure and the filaments, after solidifying, pass around the yarn guides and then upwards, at an angle of about 30 degrees to the horizontal, through the quench liquid outlet aperture. The passage of the filaments creates a pumping action of the quench liquid in through the two inlet apertures and out through the outlet aperture. The area of the outlet aperture is less than the sum of the areas of the inlet apertures, to create an inefficient pump.Type: GrantFiled: August 11, 1978Date of Patent: March 18, 1980Assignee: Kling-Tecs, Inc.Inventor: John S. Roberts
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Patent number: 4188873Abstract: A piston/cylinder type element particularly suited for embodiment in a refuse compactor as the ram thereof comprises adjustable guide means for guiding the piston-like element in sliding movement within the cylinder. The guide means are adjustable to accommodate wear in the mating surfaces thereof. There is also disclosed a discharge cone for a compactor which is releasably secured to the ramhousing structure in a selected one of a plurality of positions evenly to distribute wear on the cone produced by the passage of refuse therethrough and that cone is removable from the ram housing to be replaced by a different structure, depending upon the refuse to be compacted. Additionally, the ram member of a compactor includes novel teeth elements to cut through refuse which might otherwise be wedged between adjacent surfaces of the ram and cylinder and cause jamming.Type: GrantFiled: November 14, 1977Date of Patent: February 19, 1980Inventor: Andor Gattyan
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Patent number: 4179789Abstract: A piston-type safety lock device, of the type comprising a cylindrical rotor journalled in a cavity of a stator. Said rotor contains a plurality of radially slidable pistons cooperating at their inner end with the notches of a key for bringing their other end flush with the periphery of said rotor. Said other end bears against the inner surface of the cavity in which the rotor is journalled and, for one angular position of the rotor, against pistons slidable in the stator and elastically biased toward the rotor. Said pistons of the stator and rotor are flat blanked members. Said pistons are disposed respectively in a single slot of the stator and in a single slot of the rotor and have rectilinear and parallel lateral edges which are in contact with the lateral edge of an adjacent piston or the end of said slot.Type: GrantFiled: November 2, 1977Date of Patent: December 25, 1979Assignee: Neiman S.A.Inventor: Paul Lipschutz
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Patent number: 4178240Abstract: A system for handling two liquid streams comprises an hydraulic circuit including a pair of receptacles each provided with movable partition means dividing it into first and second chambers. Rod means extending through a first chamber of each receptacle connects the partition means and is effective to cause reciprocation of one partition means to be repeated by the other so that as the first chamber of one receptacle is expanded, the first chamber of the other receptacle is contracted. A quantity of the first liquid is delivered alternately to the first and second chambers of one receptacle as those chambers expand. As those chambers contract first liquid is passed through conduit means from the first and second chambers of said one receptacle to the first and second chambers, respectively, of said other receptacle.Type: GrantFiled: May 17, 1976Date of Patent: December 11, 1979Inventor: Harry E. Pinkerton
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Patent number: 4178410Abstract: A fabric is coated with a composition which comprises a thermoplastic polyurethane and a sulfone having the following general formula ##STR1## wherein R represents --H, --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7 OH, --CH.sub.2 CH.sub.2 Br or --(CH.sub.2 CH.sub.2 O).sub.n H and n is a integer of 1 to 5, and preferably a polyisocyanate as a cross-linking agent.Type: GrantFiled: August 22, 1977Date of Patent: December 11, 1979Assignee: Meisei Chemical Works, Inc.Inventor: Mikio Tomita
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Patent number: 4177957Abstract: Apparatus for clamping a thread in a reeling machine having a reeling cage which is rotatably mounted on the machine frame and comprises bars extending parallel to the axis of rotation thereof, and a thread laying device which is displaceable on the machine frame, for changing laying of an incoming thread in rope form on the bars of the reeling cage, wherein at least one bar of the reeling cage is provided with a strip-like-first brush for clamping a thread between its bristles, and a thread receiver which is displaceable backwards and forwards on the machine frame transversely to the axis of rotation of the reeling cage supports a similar second brush, and wherein a certain thread length can be pulled out by means of an arm which is pivotally mounted on the thread receiver between the second brush advanced together with the thread receiver and the thread laying device, which thread length, after the thread has been severed, the finished rope has been removed and the thread receiver has returned, hangs in theType: GrantFiled: August 29, 1978Date of Patent: December 11, 1979Assignee: Lucke Apparate-Bau Gesellschaft mit beschraenkter HaftungInventor: Florian Lucke
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Patent number: 4178409Abstract: A fabric is coated with a composition which comprises a thermoplastic polyurethane and 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane derivative having the following general formula ##STR1## wherein each n1 and n2 represents zero or a positive integer and n1 + n2 is zero or one of the integers from 1 to 8, and preferably a polyisocyanate as a cross-linking agent.Type: GrantFiled: August 12, 1977Date of Patent: December 11, 1979Assignee: Meisei Chemical Works, Inc.Inventor: Mikio Tomita
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Patent number: 4172694Abstract: A liquid ring vacuum pump or compressor in which the port members open to the buckets of the rotor intermediate to the ends of the rotor so that the ratio of the axial length of the pump to the diameter can be relatively high.Type: GrantFiled: November 7, 1977Date of Patent: October 30, 1979Assignee: The Nash Engineering CompanyInventor: Harold K. Haavik
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Patent number: 4171168Abstract: A pen of the embouchure type having a pair of contiguous nibs for a writing tip comprising at least one pair of shaped lips forming a curvate capillary mouth and being flexible to permit a slit formed by the lips to vary in breadth with the pressure applied upon the tip to produce an ink track of corresponding breadth; such a pen formed of flexible material with strengthening structural formations; and such a pen in which a plurality of writing tips may be formed at the nib end; the multitipped nib end being formed either from a tube or tubes of flexible material or from a sheet or sheets of flexible material.Type: GrantFiled: August 22, 1977Date of Patent: October 16, 1979Inventor: Ben Braun
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Patent number: 4170196Abstract: A fish rearing enclosure includes framework which is netted to provide an enclosed space for accommodating marine fish to be cultured. A slide fastener or fasteners are attached to the top portion of the net to form a mouth which can be opened and closed by manipulation of the fastener slider or sliders. Several embodiments are disclosed.Type: GrantFiled: January 21, 1977Date of Patent: October 9, 1979Assignee: Yoshida Kogyo, K. K.Inventor: Kiyoo Yoneya
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Patent number: 4169840Abstract: This invention relates to an improved method of preparing furocoumarins having the following formula: ##STR1## wherein R is a radical selected from the group consisting of hydrogen, hydroxy and lower alkoxy, which comprises reacting a coumarin having the following formula: ##STR2## or the alkali metal salt thereof, with a haloacetal having the following formula: ##STR3## WHEREIN R.sub.Type: GrantFiled: November 14, 1977Date of Patent: October 2, 1979Assignee: Oy Star ABInventors: Juhani I. T. Maki, Pentti J. Malkonen, Heikki E. Nupponen