Patents by Inventor Daniel L. Joynt
Daniel L. Joynt 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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Publication number: 20210282616Abstract: A surface maintenance machine comprises a surface maintenance head assembly with attached surface maintenance tool for collecting debris/fluid using a fluid delivery/recovery system. Embodiments include an outlet nozzle configured to dispense cleaning fluid exiting the outlet nozzle on the surface maintenance tool. The outlet nozzle is fluidly connected to a cleaning fluid source which can vary the intensity of cleaning fluid exiting the outlet nozzle such that different intensities of the cleaning fluid correspond to the cleaning fluid being dispensed on different areas of the surface maintenance tool. Embodiments also include a second outlet nozzle, located opposite the first, which is configured to dispense cleaning fluid exiting the outlet nozzle on the surface maintenance tool. Further embodiments include a pump which can vary the intensity of cleaning fluid exiting the outlet nozzle in a cyclical manner and suspend the cleaning fluid from exiting the outlet nozzle.Type: ApplicationFiled: March 2, 2021Publication date: September 16, 2021Inventor: Daniel L. Joynt
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Patent number: 9556526Abstract: A system and method for generating hypochlorous acid, the system comprising an electrolysis cell, a first fluid line configured to direct a first salt solution to a cathode chamber of the electrolysis cell, and a second fluid line configured to direct a second salt solution to an anode chamber of the electrolysis cell, where the second salt solution has a greater salt concentration than the first salt solution.Type: GrantFiled: June 27, 2013Date of Patent: January 31, 2017Assignee: TENNANT COMPANYInventors: Daniel P. Longhenry, Daniel L. Joynt
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Patent number: 9410255Abstract: A system and method for generating and dispensing a diluted sodium hydroxide solution, the system including an electrolysis unit configured to electrochemically generate a concentrated sodium hydroxide solution from an anolyte solution formed with a non-chlorinated electrolyte. The system also including a dosing pump configured to receive dilution water and the concentrated sodium hydroxide solution at a high dilution ratio to produce the diluted sodium hydroxide solution, and a dispenser configured to dispense the diluted sodium hydroxide solution.Type: GrantFiled: March 13, 2014Date of Patent: August 9, 2016Assignee: TENNANT COMPANYInventors: Daniel Paul Longhenry, Daniel L. Joynt
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Patent number: 9162904Abstract: A cleaning solution generator comprising a housing with an interior reservoir and a brine tank, the cleaning solution generator being configured to generate an alkaline solution from a mixed solution and to operably direct the generated alkaline solution to the interior reservoir of the housing.Type: GrantFiled: March 2, 2012Date of Patent: October 20, 2015Assignee: Tennant CompanyInventors: Robert James Guastella, Daniel L. Joynt
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Patent number: 9163319Abstract: A method and apparatus are provided for electrolyzing a source liquid in an electrolytic device. The electrolytic device includes a first cathode in a cathode chamber; and an anode and a second, auxiliary cathode in an anode chamber. The anode chamber and cathode chamber are separated by a barrier, and the anode and the auxiliary cathode are separated by a gap that lacks a barrier. While electrolyzing the source liquid with the electrolytic device, a level of current applied to the auxiliary cathode is adjusted in response to pH of an anolyte liquid produced from the source liquid by the anode chamber to maintain the pH within a desired range.Type: GrantFiled: March 15, 2013Date of Patent: October 20, 2015Assignee: TENNANT COMPANYInventor: Daniel L Joynt
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Publication number: 20140262812Abstract: A system and method for generating and dispensing a diluted sodium hydroxide solution, the system including an electrolysis unit configured to electrochemically generate a concentrated sodium hydroxide solution from an anolyte solution formed with a non-chlorinated electrolyte. The system also including a dosing pump configured to receive dilution water and the concentrated sodium hydroxide solution at a high dilution ratio to produce the diluted sodium hydroxide solution, and a dispenser configured to dispense the diluted sodium hydroxide solution.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Inventors: Daniel Paul Longhenry, Daniel L. Joynt
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Publication number: 20140124377Abstract: A method and apparatus are provided for electrolyzing a source liquid in an electrolytic device. The electrolytic device includes a first cathode in a cathode chamber; and an anode and a second, auxiliary cathode in an anode chamber. The anode chamber and cathode chamber are separated by a barrier, and the anode and the auxiliary cathode are separated by a gap that lacks a barrier. While electrolyzing the source liquid with the electrolytic device, a level of current applied to the auxiliary cathode is adjusted in response to pH of an anolyte liquid produced from the source liquid by the anode chamber to maintain the pH within a desired range.Type: ApplicationFiled: March 15, 2013Publication date: May 8, 2014Applicant: TENNANT COMPANYInventor: Daniel L. Joynt
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Publication number: 20140001053Abstract: A system and method for generating hypochlorous acid, the system comprising an electrolysis cell, a first fluid line configured to direct a first salt solution to a cathode chamber of the electrolysis cell, and a second fluid line configured to direct a second salt solution to an anode chamber of the electrolysis cell, where the second salt solution has a greater salt concentration than the first salt solution.Type: ApplicationFiled: June 27, 2013Publication date: January 2, 2014Inventors: Daniel P. Longhenry, Daniel L. Joynt
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Publication number: 20140001054Abstract: A system and method for generating and dispensing a diluted electrolyzed solution, where the system includes a solution generator, one or more containers, and one or more dispensing stations separate from the solution generator. The solution generator generates and dispenses a concentrated electrolyzed solution to the container(s). The dispensing station(s) draw the concentrated electrolyzed solution from the container(s), dilutes the drawn concentrated electrolyzed solution, and dispenses the diluted electrolyzed solution.Type: ApplicationFiled: June 27, 2013Publication date: January 2, 2014Inventors: Daniel P. Longhenry, Daniel L. Joynt
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Publication number: 20120228145Abstract: A cleaning solution generator comprising a housing with an interior reservoir and a brine tank, the cleaning solution generator being configured to generate an alkaline solution from a mixed solution and to operably direct the generated alkaline solution to the interior reservoir of the housing.Type: ApplicationFiled: March 2, 2012Publication date: September 13, 2012Applicant: TENNANT COMPANYInventors: Robert James Guastella, Daniel L. Joynt
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Patent number: 7051399Abstract: A cleaner cartridge includes a container having an interior cavity, in which cleaning agent can be stored. A first end of conduit is fluidically coupled to the interior cavity. A second end of the conduit is connectable to a chemical dispenser.Type: GrantFiled: May 21, 2002Date of Patent: May 30, 2006Assignee: Tennant CompanyInventors: Bruce F. Field, Daniel L. Joynt, Jeffrey A. Johnson, Joseph K. Krueger, Bryan L. Christensen
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Patent number: 7025834Abstract: A gutter broom assembly for a street sweeper and method of use are disclosed. The invention relates to street sweeper having a vacuum system for moving air through a portion thereof and having a gutter broom assembly. The gutter broom assembly includes housing, a gutter broom being movable between an operational orientation and a transport orientation relative to the housing, and a skirt assembly attached to the housing. A sweeping chamber is defined within the housing and the skirt assembly which substantially encloses the gutter broom. A vacuum connection between the sweeping chamber and the vacuum system is provided for removing dust within the sweeping chamber when the gutter broom frame is in its operational orientation.Type: GrantFiled: September 4, 2002Date of Patent: April 11, 2006Assignee: Tennant CompanyInventors: Daniel L. Joynt, Ronald W. Lehman, Larry D. Wydra
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Publication number: 20040187895Abstract: In a method for use in a hard floor surface cleaner, a supply of cleaning agent and a flow control device are provided. The flow control device is coupled to the supply of cleaning agent. Next, a flow of cleaning agent is provided that travels from the supply of cleaning agent through the flow control device. Finally, the flow of cleaning agent is restricted to less than approximately 10.0 cubic centimeters per minute using the flow control device.Type: ApplicationFiled: January 5, 2004Publication date: September 30, 2004Applicant: Tennant CompanyInventors: Bruce F. Field, Joseph K. Krueger, Daniel L. Joynt, Joseph L. Pouliot, Daniel J. McHugh
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Publication number: 20040040104Abstract: A gutter broom assembly for a street sweeper and method of use are disclosed. The invention relates to street sweeper having a vacuum system for moving air through a portion thereof and having a gutter broom assembly. The gutter broom assembly includes housing, a gutter broom being movable between an operational orientation and a transport orientation relative to the housing, and a skirt assembly attached to the housing. A sweeping chamber is defined within the housing and the skirt assembly which substantially encloses the gutter broom. A vacuum connection between the sweeping chamber and the vacuum system is provided for removing dust within the sweeping chamber when the gutter broom frame is in its operational orientation.Type: ApplicationFiled: September 4, 2002Publication date: March 4, 2004Inventors: Daniel L. Joynt, Ronald W. Lehman, Larry D. Wydra
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Patent number: 6671925Abstract: A chemical dispenser for use in a hard floor surface cleaner includes a supply of cleaning agent and a flow control device. The flow control device is fluidically coupled to the supply of cleaning agent and includes an output flow of cleaning agent therethrough having a flow rate that is substantially independent of a volume of the supply of cleaning agent.Type: GrantFiled: May 21, 2002Date of Patent: January 6, 2004Assignee: Tennant CompanyInventors: Bruce F. Field, Joseph K. Krueger, Daniel L. Joynt, Joseph L. Pouliot, Daniel J. McHugh
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Patent number: 6618888Abstract: The present invention relates to a simple mechanical dual stage pressure control for a cleaning head operatively coupled to a cleaning vehicle for engaging a surface to be cleaned and to methods of engaging and using such a dual stage pressure control to perform surface cleaning, surface maintenance, surface conditioning and the like. While the present invention is described and depicted primarily with reference to a cleaning head having dual rotary scrubbing brushes, the present invention finds diverse application in the art of surface cleaning, maintenance, conditioning and the like. Accordingly, the present invention is readily adaptable to cleaning heads having one or more of the following applications, including without limitation, such cleaning heads designed and adapted to: burnish, polish, scrub, sweep, brush, treat and wipe a surface to be cleaned wherein an increased downforce is beneficially selectively applied to such cleaning head to increase the efficacy of such cleaning head.Type: GrantFiled: December 20, 2001Date of Patent: September 16, 2003Assignee: Tennant CompanyInventors: Daniel L. Joynt, Lloyd D. Fortman
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Patent number: 6602018Abstract: A wiper assembly for surface maintenance vehicles has a non-destructive failure mode when impacting stationary objects, or otherwise becoming subject to instantaneous or rapidly increasing resistance to forward movement, due to an improved mechanical coupling. The improved mechanical coupling for a wiper assembly absorbs some of the impact stresses imparted to the wiper assembly. Portions of each improved mechanical coupling designed to absorb the stress forces deforms most nearest the location of increasing resistance to forward movement, and may either become fully disconnected if the stress force reaches a threshold force value or recoils to the original mounting location after absorbing forces that are less that said threshold force value. The threshold value force at which a wiper assembly dislodges from its mounting location is designed to avoid damage to the wiper assembly, the articulated mounting member (if any), and the maintenance vehicle itself.Type: GrantFiled: April 17, 2001Date of Patent: August 5, 2003Assignee: Tennant CompanyInventors: Steven V. Feeny, Daniel L. Joynt
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Publication number: 20030019070Abstract: A chemical dispenser for use in a hard floor surface cleaner includes a supply of cleaning agent and a flow control device. The flow control device is fluidically coupled to the supply of cleaning agent and includes an output flow of cleaning agent therethrough having a flow rate that is substantially independent of a volume of the supply of cleaning agent.Type: ApplicationFiled: May 21, 2002Publication date: January 30, 2003Inventors: Bruce F. Field, Joseph K. Krueger, Daniel L. Joynt, Joseph L. Pouliot, Daniel J. McHugh
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Patent number: D485175Type: GrantFiled: May 21, 2002Date of Patent: January 13, 2004Assignee: Tennant CompanyInventors: Bruce F. Field, Daniel L. Joynt, Joseph K. Krueger, Earl Krueger, Bryan L. Christensen
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Patent number: D674462Type: GrantFiled: March 4, 2011Date of Patent: January 15, 2013Assignee: Tennant CompanyInventors: Robert James Guastella, Michael Alexander Andreini, Daniel Paul Longhenry, Jeffrey Allen Johnson, Allen John Rapatz, Joseph Lewis Pouliot, David John Copeland, Daniel L. Joynt, Richard Mark Pierce, Reid Philip Rabon