Patents by Inventor Louis F. Fraula
Louis F. Fraula 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: 4285352Abstract: A chemically sanitizing rinse solution is prepared in batches of variable sizes, but with a preselected substantially constant proportion of water and chemical sanitizing agent, in a rinse solution mixing tank, for demand consumption on a continuous duty basis, by delivering the sanitizing agent to, and by admitting fresh water into, the mixing tank in response to predetermined level changes of the solution therein.Type: GrantFiled: September 12, 1979Date of Patent: August 25, 1981Assignee: Hobart CorporationInventors: William H. McMahon, Louis F. Fraula, Stuart E. Athey, Thomas M. Johnson, Terrence W. Moore
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Patent number: 4280520Abstract: A liquid collection pan in the wash compartment below the opening thereinto from the prewash compartment has a shielded slot directed toward the opening which captures and returns liquid entering the wash compartment from the prewash compartment.Type: GrantFiled: September 12, 1979Date of Patent: July 28, 1981Assignee: Hobart CorporationInventors: Louis F. Fraula, William H. McMahon, Thomas B. Heckman
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Patent number: 4229229Abstract: A liquid sanitizing agent is drawn into a capillary conduit section of defined volume, then separated from the supply thereof by opening an atmospheric back pressure vent at the lower end of the capillary section at substantially the same time said capillary section is filled. The sanitizing agent in the capillary section is then pumped as a liquid plug of defined volume into the sanitizing system of the warewasher.Type: GrantFiled: May 18, 1979Date of Patent: October 21, 1980Assignee: Hobart CorporationInventors: George Churley, Louis F. Fraula
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Patent number: 4212239Abstract: An improved method and apparatus is provided to control the moisture content of pulp which is discharged from a press. During operation of the press, slurry containing the pulp enters the press and engages a screw which is rotated to feed the pulp upwardly in the press. As the wet pulp moves upwardly, water is removed from the pulp. In order to further reduce the moisture content of the pulp, a restrictor member or cone in the press outlet is effective to compress the pulp against helical flighting of the screw. In order to maintain the moisture content of the discharged pulp substantially constant with variations in wet pulp consistency and to prevent overloading of the press drive motor, the restrictor cone is movable axially along the screw drive shaft to vary the extent to which it restricts the press outlet. The restrictor cone is moved along the screw drive shaft under the influence of forces applied against the outer surface of the cone by the wet pulp.Type: GrantFiled: February 15, 1979Date of Patent: July 15, 1980Assignee: Hobart CorporationInventors: Louis F. Fraula, Gary V. Hoying
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Patent number: 4209343Abstract: A rapidly moving air stream transports an air unstable sanitizing agent such as sodium hypochlorite from a liquid supply thereof directly to a tank containing water, such as the wash chamber of a dishwasher. The air is driven through a venturi powered aspirator which injects the sanitizing agent into the air stream and transports it to the warewasher for mixture with the water to provide an effective bactericide. Contact of the aspirated agent with air is preferably kept to a minimum by transporting it through a short hose interconnecting the aspirator and tank.Type: GrantFiled: September 1, 1978Date of Patent: June 24, 1980Assignee: Hobart CorporationInventors: Buddy F. Lane, Louis F. Fraula
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Patent number: 4147558Abstract: F.) warewasher low wash and rinse temperature (120.degree.-140.degree. F.) WareWasher accomplishes the same general washing and rinsing effectiveness as a conventional high temperature (150.degree. F. minimum wash, 180.degree. F. minimum rinse) warewasher without loss of productivity resulting from time lost between completion of washing and commencement of rinsing a given load of ware, through use of independent, dedicated wash and rinse systems, the latter of which includes a holding tank which enables independent batching of a predetermined volume of rinse solution from properly-proportioned fresh water and sanitizing agent while washing a given load of ware. The sanitizing agent is introduced independently into the holding tank and independently of the fresh water line, and is therefore unaffected by a great range of water line pressures and the mineral conditions of the water.Type: GrantFiled: September 21, 1977Date of Patent: April 3, 1979Assignee: Hobart CorporationInventors: Louis F. Fraula, Stuart E. Athey
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Patent number: 4147559Abstract: A low wash and rinse temperature (120.degree.-140.degree. F.) warewasher accomplishes the same general washing and rinsing effectiveness as a conventional high temperature (150.degree. F. minimum wash, 180.degree. F. minimum rinse) warewasher without loss of productivity resulting from time lost between completion of washing and commencement of rinsing a given load of ware, through use of independent, dedicated wash and rinse systems, the latter of which includes a holding tank which enables independent batching of a predetermined volume of rinse solution from properly-proportioned fresh water and sanitizing agent while washing a given load of ware. The sanitizing agent is introduced independently into the holding tank and independently of the fresh water line, and is therefore unaffected by a great range of water line pressures and the mineral conditions of the water.Type: GrantFiled: February 7, 1978Date of Patent: April 3, 1979Assignee: Hobart CorporationInventors: Louis F. Fraula, Stuart E. Athey
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Patent number: 3982552Abstract: A dishwashing machine having a gas-fired heater is provided with a flue structure having wall portions common to the tank and wash chamber of the machine. While the machine is running liquid splashes against these wall portions and exchanges heat therewith. When the water circulation system is stopped, the heater is limited to a standby condition which is predetermined to maintain these wall portions at substantially the same temperature as during running conditions.Type: GrantFiled: June 26, 1975Date of Patent: September 28, 1976Assignee: Hobart CorporationInventor: Louis F. Fraula
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Patent number: RE30478Abstract: A low wash and rinse temperature (120.degree.-140.degree. F.) warewasher accomplishes the same general washing and rinsing effectiveness as a conventional high temperature (150.degree. F. minimum wash, 180.degree. F. minimum rinse) warewasher without loss of productivity resulting from time lost between completion of washing and commencement of rinsing a given load of ware, through use of independent, dedicated wash and rinse systems, the latter of which includes a holding tank which enables independent batching of a predetermined volume of rinse solution from properly-proportioned fresh water and sanitizing agent while washing a given load of ware. The sanitizing agent is introduced independently into the holding tank and independently of the fresh water line, and is therefore unaffected by a great range of water line pressures and the mineral conditions of the water.Type: GrantFiled: August 20, 1979Date of Patent: January 13, 1981Assignee: Hobart CorporationInventors: Louis F. Fraula, Stuart E. Athey
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Patent number: RE30537Abstract: A low wash and rinse temperature (120.degree.-140.degree. F.) warewasher accomplishes the same general washing and rinsing effectiveness as a conventional high temperature (150.degree. F. minimum wash, 180.degree. F. minimum rinse) warewasher without loss of productivity resulting from time lost between completion of washing and commencement of rinsing a given load of ware, through use of independent, dedicated wash and rinse systems, the latter of which includes a holding tank which enables independent batching of a predetermined volume of rinse solution from properly-proportioned fresh water and sanitizing agent while washing a given load of ware. The sanitizing agent is introduced independently into the holding tank and independently of the fresh water line, and is therefore unaffected by a great range of water line pressures and the mineral conditions of the water.Type: GrantFiled: August 20, 1979Date of Patent: March 3, 1981Assignee: Hobart CorporationInventors: Louis F. Fraula, Stuart E. Athey