Patents by Inventor Davis B. Dwinell
Davis B. Dwinell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6868993Abstract: A plastic pail having a dispensing closure and a diametrically opposed puncture zone to enable surge free pouring. The dispensing closure has a flexible pouring spout and threaded overcap. The spout dispensing passage is closed off by a tear out sealing diaphragm in initial shipping condition The puncture zone is surrounded by an upstanding retaining collar dimensioned to receive the separated tear out diaphragm which acts as a protective cover for the punctured anti-glug vent during storage and handling.Type: GrantFiled: August 13, 2002Date of Patent: March 22, 2005Assignee: American Flange Mfg. Co., Inc.Inventor: Davis B. Dwinell
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Patent number: 6726048Abstract: Closure construction for blow molded drums having an upstanding internally threaded neck. A closure plug with sealing gasket is screwed into the neck to provide a liquid tight seal. A plastic tamper evident overseal completely covers the plug and neck and is manually snapped in place so as to interlockingly engage the plug making both the plug wrench engaging structure and the overseal interlocking structure inaccessible without destruction of the overseal. A tear strip opening means is provided for authorized access.Type: GrantFiled: September 9, 2002Date of Patent: April 27, 2004Assignee: American Flange & Mfg. Co., IncInventors: Davis B. Dwinell, Cornelis R. Van De Klippe
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Publication number: 20040045965Abstract: Closure construction for blow molded drums having an upstanding internally threaded neck. A closure plug with sealing gasket is screwed into the neck to provide a liquid tight seal. A plastic tamper evident overseal completely covers the plug and neck and is manually snapped in place so as to interlockingly engage the plug making both the plug wrench engaging structure and the overseal interlocking structure inaccessible without destruction of the overseal. A tear strip opening means is provided for authorized access.Type: ApplicationFiled: September 9, 2002Publication date: March 11, 2004Inventors: Davis B. Dwinell, Cornelis R. Van De Klippe
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Publication number: 20040031822Abstract: A plastic pail having a dispensing closure and a diametrically opposed puncture zone to enable surge free pouring. The dispensing closure has a flexible pouring spout and threaded overcap. The spout dispensing passage is closed off by a tear out sealing diaphragm in initial shipping condition The puncture zone is surrounded by an upstanding retaining collar dimensioned to receive the separated tear out diaphragm which acts as a protective cover for the punctured anti-glug vent during storage and handling.Type: ApplicationFiled: August 13, 2002Publication date: February 19, 2004Inventor: Davis B. Dwinell
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Publication number: 20030213812Abstract: A metal or plastic pail lid has a neck construction comprising an opening surrounded by a neck incorporating a locking collar surrounding the neck. A plastic closure assembly has an integrally molded sealing channel having an axially extending inner wall and a peripheral interlocking outer wall. The closure assembly is secured to the neck construction with the spout inner wall guided within the neck opening and the spout outer wall axially forced between the outer surface of the upstanding neck and the inner diameter of the surrounding collar whereupon the sealing channel outer wall is interlockingly squeezed between the neck and the surrounding collar to form a liquid-tight, tamper resistant connection.Type: ApplicationFiled: June 19, 2003Publication date: November 20, 2003Inventors: Herman P. Kars, Davis B. Dwinell
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Publication number: 20020108974Abstract: A plastic pail lid opening surrounded by an upstanding closure receiving cylindrical neck is modified to incorporate a shorter outer cylindrical collar surrounding the neck. A closure assembly made up of an internally threaded closure fitment and a hand applied plug is affixed to the opening neck. The threaded opening is surrounded by an integrally molded sealing channel having an axially extending inner wall and a peripheral interlocking outer wall. To secure the closure assembly to the pail opening the inner wall is guided within the opening neck while the outer wall is axially forced between the outer surface of the upstanding neck and the inner diameter of the surrounding cylindrical collar. With the sealing channel outer wall interlockingly squeezed between the opening neck and surrounding collar, a liquid tight tamper resistant connection is formed.Type: ApplicationFiled: April 11, 2002Publication date: August 15, 2002Inventor: Davis B. Dwinell
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Patent number: 6386405Abstract: A plastic pail lid opening surrounded by an upstanding closure receiving cylindrical neck is modified to incorporate a shorter outer cylindrical collar surrounding the neck. A closure assembly made up of a nestable pouring spout and an internally threaded screw cap is affixed to the opening neck. The pouring spout is surrounded by an integrally molded sealing channel having an axially extending inner wall and a peripheral interlocking outer wall. To secure the closure to the pail opening the spout inner wall is guided within the opening neck and the spout outer wall is axially forced between the outer surface of the upstanding neck and the inner diameter of the surrounding collar. With the spout sealing channel outer wall interlockingly squeezed between the opening neck and surrounding collar, a liquid tight tamper resistant connection is formed.Type: GrantFiled: December 18, 2000Date of Patent: May 14, 2002Assignee: Royal Packaging Industries Van Leer NVInventors: Herman P. Kars, Davis B. Dwinell
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Patent number: 5906288Abstract: A cover for plastic pails having a dispensing closure adjacent the cover periphery which allows unimpeded flow of liquid from the pail. An anti-glug vent device is integrally molded in the cover diametrically opposite from the dispensing closure to permit surge free, controlled pouring. A vent panel is disposed in the central top wall of the cover bounded by a cutting zone of reduced cross section and a hinge connection to the cover. An axially disposed actuating lever extends upwardly from the central area of the vent panel. To activate the vent for smooth pouring, the cutting zone is cut with a knife or punctured with a screw driver allowing the vent to open by pushing the actuating lever away from the cutting zone causing the vent panel to pivot about the hinge connection. To reclose the vent, the pivoting action on the actuating lever is reversed causing the cutting zone on the vent panel to become frictionally engaged within the resulting opening in the pail cover.Type: GrantFiled: May 27, 1997Date of Patent: May 25, 1999Assignee: Royal Packaging Industries Van Leer N.V.Inventor: Davis B. Dwinell
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Patent number: 5256225Abstract: A method of securing a two piece plastic nozzle and overlying screw cap closure assembly to a plastic pail cover wherein the nozzle has a cylindrical body portion which is inserted into a cover opening to form a friction fit therewith. The overlying screw cap is then rigidly supported as a sonic welding horn is brought into axial engagement with the protruding nozzle body portion. Energization of the sonic welding horn causes the nozzle body portion to soften and deform radially outwardly into a circumferentially enlarged rivet connection. Continued axial displacement of the sonic welding horn creates a plastic bond about the periphery of the rivet connection so as to close off any leakage path therearound. At the same time any radial dispersion of plastic material resulting from the bonding process is locally contained about the rivet connection periphery.Type: GrantFiled: January 13, 1992Date of Patent: October 26, 1993Assignee: Royal Packaging Industries Van Leer B.V.Inventor: Davis B. Dwinell
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Patent number: 5221028Abstract: A two piece plastic nozzle and overlying screw cap closure assembly in combination with a plastic pail cover wherein the nozzle has a cylindrical body portion which is inserted into a cover opening to form a friction fit therewith. The overlying screw cap is then rigidly supported as a sonic welding horn is brought into axial engagement with the protruding nozzle body portion. Energization of the sonic welding horn causes the nozzle body portion to soften and deform radially outwardly into a circumferentially enlarged rivet connection. Continued axial displacement of the sonic welding horn creates a plastic bond about the periphery of the rivet connection so as to close off any leakage path therearound. At the same time any radial dispersion of plastic material resulting from the bonding process is locally contained about the rivet connection periphery.Type: GrantFiled: October 19, 1992Date of Patent: June 22, 1993Assignee: Royal Packaging Industries Van Leer B.V.Inventor: Davis B. Dwinell
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Patent number: 4905862Abstract: A lightweight metal protective closure for covering the threaded dispensing openings in steel shipping drums during the drum exterior painting process. The closure is formed as a shallow cup having a bottom wall surrounded by an upstanding sidewall. The sidewall is formed with a single embossed thread and terminates in a circumferentially extending radially fluted lip. The lip is contoured to closely overlie and protect the exposed top surfaces of the upstanding opening neck from deleterious paint coverage leaving the lower neck surfaces exposed.Type: GrantFiled: December 5, 1988Date of Patent: March 6, 1990Assignee: American Flange & Manufacturing Co. Inc.Inventors: Davis B. Dwinell, Thomas G. Moller
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Patent number: 4568006Abstract: A nestable spout assembly for dispensing liquid products from cans and pails. A molded plastic spout in extended position has an enlarged flexible lower wall portion joined to a relatively rigid externally threaded upper wall portion. A peripheral sealing channel is disposed about the base of the lower wall portion for securing to a container wall opening neck by means of an overlying metal crimping ring. A tear out diaphragm is recessed within the spout upper wall portion above the spout thread and provided with an integrally molded ring pull for removal. A circumferentially enlarged plastic reclosing cap threadedly engages the spout upper wall portion and also interlockingly engages the metal crimping ring with the spout in nested position to close off the annular spout void against contamination. A separate generally cup shaped pouring vent is included in the spout assembly to facilitate smooth, surge free, pouring.Type: GrantFiled: November 5, 1984Date of Patent: February 4, 1986Assignee: American Flange & Manufacturing Co. Inc.Inventors: Hugo Mueller, Davis B. Dwinell, Jeremiah J. Laurizio
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Patent number: 4520942Abstract: A two piece closure assembly consisting of a metal tamperproof overcap and a plastic recloseable undercap. The metal overcap has a recessed center panel surrounded by a downwardly opening sealing channel. The plastic undercap has a similar configuration but with a slightly narrower sealing channel so as to loosely nest within the overcap in assembled position. The overcap is further provided with a diametrically extending tear strip defined by a pair of parallel score lines. A gripping ear extends from each end of the tear strip at the sealing channel outer edge. The gripping ears besides providing ready access for tearing and removal of the overcap intact are configured to hold the overseal and undercap in assembled position for application as a unit to a container opening.Type: GrantFiled: April 20, 1984Date of Patent: June 4, 1985Assignee: American Flange & Manufacturing Co. Inc.Inventor: Davis B. Dwinell
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Patent number: 4442949Abstract: A nestable spout assembly for dispensing liquid products from cans and pails. A molded plastic spout in extended position has an enlarged flexible lower wall portion joined to a relatively rigid externally threaded upper wall portion. A peripheral sealing channel is disposed about the base of the lower wall portion for securing to a container wall opening neck by means of an overlying metal crimping ring. A tear out diaphragm is recessed within the upper end of the spout and is provided with an integrally molded ring pull for removal. A circumferentially enlarged plastic reclosing cap threadedly engages the spout upper wall portion and also interlockingly engages the metal crimping ring with the spout in nested position to close off the annular spout void against contamination. An axially extending support member is disposed within the space between the upper surface of the diaphragm and the under surface of the reclosing cap.Type: GrantFiled: March 21, 1983Date of Patent: April 17, 1984Assignee: American Flange & Manufacturing Co. Inc.Inventors: Davis B. Dwinell, Jeremiah J. Laurizio
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Patent number: 4236629Abstract: A nestable pouring spout assembly for dispensing liquid products from cans and pails. A molded plastic spout has in extended pouring position an enlarged flexible lower wall portion joined to a relatively rigid externally threaded upper wall portion closed off by an imperforate sealing diaphragm. A peripheral sealing channel is disposed about the base of the lower wall portion for securing to a container wall opening neck by means of an overlying metal crimping ring. The upper wall portion receives an internally threaded reclosing cap which is cooperatively engaged within the confines of the crimping ring when the spout is in stored position with the upper wall concentrically nested within the lower wall. Gripping bails integrally formed on the reclosing cap facilitate lifting the spout to raised pouring position by reversing the lower wall portion with respect to the sealing channel from a downwardly extending position to an upwardly extending position.Type: GrantFiled: October 2, 1978Date of Patent: December 2, 1980Assignee: American Flange & Manufacturing Co. Inc.Inventor: Davis B. Dwinell
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Patent number: 4163512Abstract: A one piece pouring spout is inserted within a preformed can opening and fully seated for sealing against leakage and pilfering. In use, the spout is raised, to extended pouring position and rigidly retained within the can opening. The elongated tubular spout is integrally molded of synthetic plastic having its upper end closed off with a removeable sealing diaphragm and surrounded with a finger gripping ring. Upper and lower sealing surfaces are formed on the spout exterior to tightly engage the can opening in fully seated respective raised and lowered positions.Type: GrantFiled: September 9, 1977Date of Patent: August 7, 1979Assignee: American Flange & Manufacturing Co. Inc.Inventor: Davis B. Dwinell
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Patent number: 4146148Abstract: A frangible closure for containers consists of a molded plastic closure sealing member and a metal crimping ring. The closure sealing member has a central tear out membrane surrounded by a sealing annulus with an annular weakened tearing zone interposed therebetween. The tear out membrane has a short cylindrical skirt depending from its lower surface and an enlarged ring pull projecting from its upper surface. The metal crimping ring overlies the sealing annulus for tight securement to a container wall opening neck. An upward force applied to the ring pull tears away the center membrane which can be then employed to reclose the opening after partial decanting of the container.Type: GrantFiled: July 27, 1978Date of Patent: March 27, 1979Assignee: American Flange & Manufacturing Co. Inc.Inventors: Davis B. Dwinell, Jeremiah J. Laurizio
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Patent number: 4117949Abstract: A liquid tight closure for containers comprising a threaded neck secured about a suitably formed opening in a container wall section. An annular sealing gasket is formed in situ on the exposed surface of the terminal thread area remote from the neck mouth. A closing member threadedly engages the container opening neck with the starting thread area of the closing member in sealing engagement with the neck gasket thereby sealing off the thread engagement upon full seating of the closing member.Type: GrantFiled: December 22, 1975Date of Patent: October 3, 1978Assignee: American Flange & Manufacturing Co. Inc.Inventor: Davis B. Dwinell
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Patent number: D344893Type: GrantFiled: September 28, 1992Date of Patent: March 8, 1994Assignee: American Flange & Mfg. Co., Inc.Inventor: Davis B. Dwinell
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Patent number: D381181Type: GrantFiled: February 28, 1995Date of Patent: July 15, 1997Assignee: American Flange & Manufacturing Co., Inc.Inventor: Davis B. Dwinell