Patents Assigned to Acorn Engineering Company
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Patent number: 5067181Abstract: An improved blow out toilet having remarkably low water volume usage. The toilet is of the type having a toilet bowl including a rinse ring having a rinse water nozzle directing water therein and a trap including a flush water nozzle. The improvement includes the reshaping of the toilet bowl and the reduction in size and reshaping of both the rinse water orifice and the flush water orifice.Type: GrantFiled: March 13, 1990Date of Patent: November 26, 1991Assignee: Acorn Engineering CompanyInventors: V. Walter Hafner, Keith D. Marshall
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Patent number: 4698860Abstract: An improved sprayhead for group washfountains of the type having several washing stations positioned around a sprayhead located over a single bowl. The washfountain has a hollow sprayhead having an exterior wall which holds not only the nozzles but also a soap reservoir and hand actuated buttons. The valves which supply water to the nozzles are preferably positioned in the pedestal below the bowl of the washfountain.Type: GrantFiled: October 20, 1986Date of Patent: October 13, 1987Assignee: Acorn Engineering CompanyInventors: V. Walter Hafner, Ron T. Hahn, Keith D. Marshall
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Patent number: 4682533Abstract: A push button assembly for moving a volume of fluid out of and into a port. The assembly has a housing containing a rubber-domed diaphragm. The domed diaphragm is designed so that it is deformable but readily returns to its original shape. The pressing of the push button depresses the diaphragm, thereby forcing air or other fluid out of the exit port. When the button is released, the diaphragm returns to its original shape pulling fluid back through the port.Type: GrantFiled: January 28, 1986Date of Patent: July 28, 1987Assignee: Acorn Engineering CompanyInventors: V. Walter Hafner, Ron T. Hahn, Keith D. Marshall
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Patent number: 4659059Abstract: An improved, delayed closing plumbing valve of the type having a cartridge with hydraulic fluid in a sealed chamber retained between an upper and lower diaphragm positioned about a longitudinally movable valve stem assembly. The chamber has a one-way piston which divides the chamber into an upper and lower section, and there is a restricted fluid flow path between the two sections. A water shut off gasket is at the base of a valve stem and has a removable gasket ring to permit the replacement of the gasket. The valve seat may also be removable for replacement. The lower diaphragm is provided with a sealed chamber to prevent its degradation by particles in the water. The diaphragms at the upper and lower end of the chamber are retained and sealed to the valve stem by retaining rings having a conical upper end which holds the inner part of the diaphragm against the valve stem. The diaphragms preferably permit the turning of the valve stem with respect to the cartridge without damage to the diaphragms.Type: GrantFiled: January 27, 1986Date of Patent: April 21, 1987Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, Theodore J. Sally, Ron T. Hahn
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Patent number: 4630638Abstract: An improved needle valve having a protective cap. The valve is of the type having an adjustable needle valve held in a housing connected to an air line. The needle valve meters air flow into a line and the improved valve has a cap with slits in the side thereof. The cap is oriented so that the slits face downwardly and, thus, any water or debris falling on the valve is conducted away from the air inlet portion of the valve. The valve is mounted so that it may be rotated 360 degrees about its point of mounting.Type: GrantFiled: January 28, 1986Date of Patent: December 23, 1986Assignee: Acorn Engineering CompanyInventors: V. Walter Hafner, Ron T. Hahn, Keith D. Marshall
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Patent number: 4630644Abstract: An improved, remote controlled valve and dual push button assembly, having a hand operated push button which, when depressed and released, opens a water valve for a predetermined length of time after which the valve closes. The valve is also connected to a foot operated push button which, when depressed, holds the valve in an open configuration as long as the foot button is depressed. The improved valve and button assembly provides an air flow path through the foot button when the foot button is not depressed. The air flow path utilizes a hole in a diaphragm of the foot button which communicates with an air flow path in the base of the piston which depresses the foot button diaphragm. The disclosure also includes a check valve held in the needle valve which is a part of the timing mechanism of the hand operated button. The check valve prevents the flow of air out through the needle valve and permits air to only flow in through the needle valve.Type: GrantFiled: January 27, 1986Date of Patent: December 23, 1986Assignee: Acorn Engineering CompanyInventors: V. Walter Hafner, Ron T. Hahn, Keith D. Marshall, Theodore J. Sally
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Patent number: 4580300Abstract: A security sleeve for facilitating the mounting of plumbing fixtures in fire rated masonry or concrete wall construction. The sleeve has a pair of metal plates which are spaced apart about the thickness of the wall. The plates have a plurality of holes which correspond with a plurality of conduits bridging the metal plates to form passageways for plumbing pipes and fasteners connected to the plumbing fixture.Type: GrantFiled: September 22, 1982Date of Patent: April 8, 1986Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner, Theodore J. Sally
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Patent number: 4571901Abstract: A vandal-resistant security view port for use in prison cells and the like. The view port permits observation into a cell or room and is mounted on a frame which can be attached over an opening in a wall of the cell. The view port has a transparent pane and a grate and may be open or covered by a hinged door operable from the back side of the wall.Type: GrantFiled: March 16, 1984Date of Patent: February 25, 1986Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner
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Patent number: 4512241Abstract: A plenum/vacuum chamber for providing air circulation in a room. The chamber is attached to a housing affixed over an opening in the wall of the room and extends into the room. The housing has a grille passing therethrough which has an air-tight compartment around it.Type: GrantFiled: January 5, 1983Date of Patent: April 23, 1985Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner
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Patent number: 4505189Abstract: A vandal-resistant and tamper-proof plenum or vacuum chamber security air flow adjustment device installed inside the cabinet of a plumbing fixture. The device has a grille formed in the wall of the cabinet with many spaced openings therein and one surface of the grille is accessible from within a cell or other room and the back surface is inaccessible therefrom. A damper member is slidingly mounted against the inaccessible surface and is adjustable to control the amount of air flowing through the grille. The damper member has many openings which are spaced apart the same distance as the openings in the grille and the damper member is inaccessible from the cell but accessible from a pipe chase positioned on the other side of the cell wall.Type: GrantFiled: January 5, 1983Date of Patent: March 19, 1985Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner
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Patent number: 4492430Abstract: A vandal-resistant and tamper-proof security mirror assembly. The mirror is particularly useful for installation in a prison cell and is not removable from the viewing side thereof but is removable and replaceable from the back of the mounting surface such as from a pipe chase. The mirror assembly is held in a pan which is held behind an opening of the mounting surface.Type: GrantFiled: January 5, 1983Date of Patent: January 8, 1985Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner, Ron T. Hahn
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Patent number: 4480163Abstract: A vandal-resistant push button switch assembly. The switch assembly has a switch actuating device with no exposed fasteners which switch may be used in a prison cell or other area requiring a high degree of vandal resistance. Although the switch may be readily operated from within the cell, it cannot be removed from the cell or destroyed under anything but the most extreme conditions. The switch has a push button actuating shaft which is depressed by the user and this shaft in turn activates a push button electrical switch mounted on the back side of the mounting surface.Type: GrantFiled: January 5, 1983Date of Patent: October 30, 1984Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, Walter V. Hafner, Ron T. Hahn
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Patent number: 4462123Abstract: A fabricated floor drain for waste reception. The drain has a receptor body having a bottom outlet and generally vertical side walls. A top rim is affixed to the top of the body and a large top flange having a removable screed guide is affixed to the top rim.Type: GrantFiled: September 29, 1982Date of Patent: July 31, 1984Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner
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Patent number: 4453202Abstract: A vandal resistant security light fixture having a housing and a light which is serviceable and removable from outside the room in which it is installed. The housing has at least one surface which faces into the room and is open at the back to permit servicing or replacement of the light assembly without having to enter the room. The fixture is vandal resistant and is particularly useful in prison cells and may be provided with one or more vandal resistant switches and vandal resistant electrical receptacles.Type: GrantFiled: January 5, 1983Date of Patent: June 5, 1984Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, Ron T. Hahn, Theodore J. Sally
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Patent number: 4434516Abstract: A wall sleeve and installation jig for the vandal-resistant mounting of multiple adjacent fixtures. The jig is positioned in a wall such as the wall of a prison cell and fixtures such as a lavatory, mirror, light or the like are securely mounted thereon.Type: GrantFiled: January 5, 1983Date of Patent: March 6, 1984Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, V. Walter Hafner
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Patent number: 4093177Abstract: An improved liquid-filled dashpot mechanism for use with a spring-biased, axially-displaceable valve stem, comprising: a housing having a passageway therein, a stem in the passageway adapted for reciprocation therein, a pair of annular rolling diaphragms disposed in spaced-apart, face-to-face relationship within the passageway in the housing, each diaphragm being respectively secured in fluid sealing relationship to the housing and the stem to collectively form an enclosed container for the dashpot liquid, a piston fixedly mounted on the stem intermediate the rolling diaphragms adapted for operative displacement within the housing and dividing the container into two chambers, a liquid metering passageway in the piston for providing fluid communication between the two chambers, and a check valve secured to the piston to permit the unidirectional flow of liquid therethrough, and when the dashpot liquid is not permitted to flow through the check valve, to direct the flow of dashpot fluid through the liquid meterType: GrantFiled: March 18, 1976Date of Patent: June 6, 1978Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, Larry D. Fields
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Patent number: 4059289Abstract: A waste drain connection for coupling the waste outlet of a plumbing fixture having a receptacle for a fluid-sealing gasket thereabout to a plumbing drain pipe including a fluid-sealing member having a sleeve portion adapted for intimate fluid-sealing about the plumbing drain pipe and an outwardly-extending flange forming a gasket about one end thereof and a sleeve and gasket compression member for containing the sleeve and for compressively urging the sleeve into greater intimate contact with the plumbing drain pipe to ensure a fluid sealing relationship therebetween and for compressively urging the gasket into intimate contact with the gasket receptacle to effectuate a fluid sealing relationship therebetween.Type: GrantFiled: September 10, 1976Date of Patent: November 22, 1977Assignee: Acorn Engineering CompanyInventors: Earl Lavern Morris, Larry Fields
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Patent number: 4045827Abstract: A combination lavatory and toilet assembly including a sanitary enclosure having a rear side with a plurality of apertures therein, an upper side including means defining a lavatory basin with a drain opening therein and communicable with a plumbing drain pipe, a front side defining an access opening closed by a pivotally mounted closure member, a relatively pivotable toilet adapted to be stored in a first position within the enclosure and being pivotable about a generally vertical axis to a second position disposed exteriorly of the enclosure to permit use thereof, toilet support and pivot means fixedly coupled to the rear portion of the toilet for supporting the toilet and for pivotal movement between the first and second positions and including means for coupling the toilet to water supply piping and means for coupling the outlet of the toilet in fluid communication with the plumbing drain, wherein the toilet support and pivot means is supported independently of the enclosure, and linkage means operativelyType: GrantFiled: December 6, 1976Date of Patent: September 6, 1977Assignee: Acorn Engineering CompanyInventors: Earl L. Morris, Larry D. Fields
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Patent number: 4006572Abstract: A security frame and mirror assembly for mounting to a wall, including a frame with a sidewall and a flange thereabout, a plurality of threaded receptacles secured to the rear face of the flange, mirror nested between the receptacles and the flange, and threaded rods having one end secured to the threaded receptacles and the other end engaged with the mounting wall.Type: GrantFiled: November 13, 1975Date of Patent: February 8, 1977Assignee: Acorn Engineering CompanyInventor: Earl L. Morris
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Patent number: D451986Type: GrantFiled: April 5, 2001Date of Patent: December 11, 2001Assignee: Acorn Engineering CompanyInventors: Keith Marshall, Carlos Galeazzi