Patents Assigned to Merrill Manufacturing Company
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Patent number: 9085878Abstract: A yard hydrant, including a discharge nozzle above ground level, connects to other vertically reciprocal working parts in the ground below the frost line. A water storage chamber, disposed below the frost line, is formed in part by a deformable diaphragm. Residual water in the hydrant, when the hydrant is turned off, is collected in the water storage chamber and returned to the hydrant for discharge through the nozzle when the hydrant is turned on. A venturi disposed in the water supply line creates turbulence and thereby creates a lower pressure adjacent the exit of the venturi when the hydrant is turned on. This lowered pressure at the venturi exit speeds up the evacuation of water from the water storage chamber when the hydrant is on so the storage chamber can accept and store water that would otherwise be above the frost line when the hydrant is turned off.Type: GrantFiled: November 11, 2013Date of Patent: July 21, 2015Assignee: Merrill Manufacturing CompanyInventor: Stephen J Anderson
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Publication number: 20150129052Abstract: A yard hydrant, including a discharge nozzle above ground level, connects to other vertically reciprocal working parts in the ground below the frost line. A water storage chamber, disposed below the frost line, is formed in part by a deformable diaphragm. Residual water in the hydrant, when the hydrant is turned off, is collected in the water storage chamber and returned to the hydrant for discharge through the nozzle when the hydrant is turned on. A venturi disposed in the water supply line creates turbulence and thereby creates a lower pressure adjacent the exit of the venturi when the hydrant is turned on. This lowered pressure at the venturi exit speeds up the evacuation of water from the water storage chamber when the hydrant is on so the storage chamber can accept and store water that would otherwise be above the frost line when the hydrant is turned off.Type: ApplicationFiled: November 11, 2013Publication date: May 14, 2015Applicant: Merrill Manufacturing CompanyInventor: Stephen J. Anderson
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Patent number: 5678865Abstract: A tank tee unit is formed from a plurality of standard pvc pipes secured together only by a suitable glue. It includes a main pipe of heavy wall pvc sandwiched between and glued to two heavy wall pvc pipes extending perpendicularly therefrom which are in turn each glued to a standard smaller diameter pvc pipe that passes entirely through the main pipe to form an extremely strong joint. This provides a unit in the form of a cross with outlets on opposite sides of the main pipe and with thick wall branch lines that can be tapped for other side connections. One side outlet can be plugged to provide a strictly tee unit.Type: GrantFiled: October 25, 1995Date of Patent: October 21, 1997Assignee: Merrill Manufacturing Company, Inc.Inventor: Stephen J. Anderson
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Patent number: 5289840Abstract: A yard hydrant includes a head section with a nozzle, a standpipe and valve housing in traditional hydrant relationship that is constructed and assembled into an integral unit which cannot be disassembled. An operating rod with valve means reciprocates in the standpipe and a valve housing in a well known manner. The rod extends through an enlarged opening formed in the head section for which there is provided a novel two piece gland unit with one piece being a packing gland nut for seal engagement with the operating rod in a well known manner and the other piece being a concentrically larger nut that is removably mounted in said opening in a watertight relationship thereto and in pressing engagement with the packing gland nut. Removal of the gland unit permits the operating rod and any attached components to be quickly and easily withdrawn from the integral unit through the opening in the head section for servicing or repairs.Type: GrantFiled: February 25, 1993Date of Patent: March 1, 1994Assignee: Merrill Manufacturing Company, Inc.Inventor: Stephen J. Anderson
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Patent number: 5261441Abstract: A yard hydrant includes a discharge nozzle above ground level connected to other vertically reciprocal working parts in the ground below the frost line. A cylindrical water reservoir unit, disposed below the frost line around said working parts, includes a diaphragm assembly removably attached to such working parts for reciprocation therewith, and a deformable diaphragm on said assembly provides a water storage area. Residual water in the hydrant when it is turned off is collected in the storage area and returned to the hydrant for discharge through the nozzle when the hydrant is turned on. The working parts are removable from the diaphragm assembly for servicing and repairs.Type: GrantFiled: May 10, 1993Date of Patent: November 16, 1993Assignee: Merrill Manufacturing Company, Inc.Inventor: Stephen J. Anderson
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Patent number: 4372339Abstract: A yard hydrant includes an improved valve assembly connecting the hydrant standpipe at a point below the frost line to a source of water under pressure. A hollow and generally cylindrical housing of such assembly is provided with a bore concentrically reduced relative to the diameter of the housing and having an upper plane spaced inwardly from the upper end of the housing to receive a rod mounted and handle operated valve. The bore terminates at its lower end in a valve seat defining a further concentrically reduced access opening to the water supply. In spaced concentric relationship about the bore are a plurality of water passageways each in communication with said bore and each extending from the upper plane thereof for communication with the standpipe to a point spaced above the valve seat so that the bore is full circle only intermediate the valve seat and the lower limits of the passageways. A drain hole is provided through the housing to the bore near the upper plane thereof.Type: GrantFiled: November 26, 1980Date of Patent: February 8, 1983Assignee: Merrill Manufacturing CompanyInventor: Stephen J. Anderson
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Patent number: D285824Type: GrantFiled: May 14, 1984Date of Patent: September 23, 1986Assignee: Merrill Manufacturing CompanyInventor: Stephen J. Anderson
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Patent number: D285825Type: GrantFiled: May 14, 1984Date of Patent: September 23, 1986Assignee: Merrill Manufacturing CompanyInventor: Stephen J. Anderson
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Patent number: D307627Type: GrantFiled: September 11, 1989Date of Patent: May 1, 1990Assignee: Merrill Manufacturing Company, Inc.Inventor: Stephen J. Anderson
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Patent number: D919575Type: GrantFiled: March 12, 2020Date of Patent: May 18, 2021Assignee: MERRILL MANUFACTURING COMPANYInventor: Stephen J. Anderson
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Patent number: D949795Type: GrantFiled: February 26, 2019Date of Patent: April 26, 2022Assignee: MERRILL MANUFACTURING COMPANYInventor: Stephen J. Anderson
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Patent number: D1001976Type: GrantFiled: February 8, 2021Date of Patent: October 17, 2023Assignee: Merrill Manufacturing CompanyInventor: Stephen J. Anderson