Patents by Inventor Roy C. Demi
Roy C. Demi 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: 4513741Abstract: Apparatus for treating animals including a muzzle, a muzzle pump assembly, a respiratory valve assembly and a respirator pump assembly. The units may be selectively assembled to serve as a pneumatic muzzle, a respirator for administering air, oxygen and other gases and to inject medicants, all of which operations may be performed when the treated animal is within its parent.Type: GrantFiled: February 14, 1983Date of Patent: April 30, 1985Inventor: Roy C. Demi
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Patent number: 4357748Abstract: A fluid flow sensing switch device having a housing provided with a fluid flow passage therethrough defined by an inlet and an outlet separated by a valve seat controlled by a movable valve member that is operated by the pressure differential between the inlet and the outlet, the device having an electrical switch construction operatively associated with the valve member and having the switch contacts thereof actuated by the pressure differential. The switch contacts of the switch construction are disposed in the fluid flow passage so as to be exposed to fluid flow therethrough and have a part thereof carried by the valve member.Type: GrantFiled: September 11, 1980Date of Patent: November 9, 1982Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4358647Abstract: A combination of a burner valve control device and an electrical switch unit carried by the device and being operated by a movable actuator controlled by the selector of the device, the selector having a control shaft rotatable about an axis thereof. The switch unit has a snap-fit arrangement snap-fitted to the device when the entire switch unit is moved in a direction substantially transverse to the axis of the control shaft to detachably secure the switch unit to the device.Type: GrantFiled: May 7, 1981Date of Patent: November 9, 1982Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4356625Abstract: A fluid flow sensing device having a housing provided with a fluid flow passage therethrough defined by an inlet and outlet separated by a valve seat controlled by a movable valve member that is operated by a pressure differential between the inlet and the outlet acting on a flexible diaphragm carried by the housing, the device having an electrical switch construction operatively associated with the valve member and having the switch contacts thereof disposed in the fluid flow passage so as to be exposed to fluid therethrough and being actuated by the pressure differential acting on the flexible diaphragm. The switch contacts comprise a pair of spaced apart contacts carried by the flexible diaphragm and a bridging contact member carried by the valve member and being adapted to make contact with the pair of contacts and thereby bridge the pair of contacts to close the switch construction to operate electronic switching, the electronic switching being disposed inside the housing.Type: GrantFiled: September 12, 1980Date of Patent: November 2, 1982Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4342886Abstract: A combination of a burner valve control device and an electrical switch unit carried by the device and being operated by a movable actuator controlled by the selector of the device, the selector having a control shaft rotatable about an axis thereof. The switch unit has a snap-fit arrangement snap-fitted to the device when the entire switch unit is moved in a direction substantially transverse to the axis of the control shaft to detachably secure the switch unit to the device.Type: GrantFiled: September 10, 1979Date of Patent: August 3, 1982Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4304546Abstract: A fluid flow sensing switch device having a housing provided with a fluid flow passage therethrough defined by an inlet and an outlet disposed in spaced coaxially aligned relation in the housing and separated by a valve seat controlled by a movable valve member that is operated by the pressure differential between the inlet and the outlet, the device having an electrical switch construction operatively associated with the valve member and having the switch contacts thereof actuated by the pressure differential. A pressure regulator is disposed in the housing for regulating the pressure of the fluid that passes from the inlet to the outlet of the housing, the pressure regulator being disposed downstream from the main valve seat so as to act on the fluid after the same passes through the main valve seat from the inlet.Type: GrantFiled: January 21, 1980Date of Patent: December 8, 1981Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4243374Abstract: A fluid flow sensing switch device having a housing provided with a fluid flow passage therethrough defined by an inlet and an outlet disposed in spaced coaxially aligned relation in the housing and separated by a valve seat controlled by a movable valve member that is operated by the pressure differential between the inlet and the outlet, the device having an electrical switch construction operatively associated with the valve member and having the switch contacts thereof actuated by the pressure differential. A pressure regulator is disposed in the housing for regulating the pressure of the fluid that passes from the inlet to the outlet of the housing, the pressure regulator being disposed downstream from the main valve seat so as to act on the fluid after the same passes through the main valve seat from the inlet.Type: GrantFiled: August 23, 1978Date of Patent: January 6, 1981Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4242083Abstract: A fluid flow sensing device having a housing provided with a fluid flow passage therethrough defined by an inlet and outlet separated by a valve seat controlled by a movable valve member that is operated by a pressure differential between the inlet and the outlet acting on a flexible diaphragm carried by the housing, the device having an electrical switch construction operatively associated with the valve member and having the switch contacts thereof disposed in the fluid flow passage so as to be exposed to fluid therethrough and being actuated by the pressure differential acting on the flexible diaphragm. The switch contacts comprise a pair of spaced apart contacts carried by the flexible diaphragm and a bridging contact member carried by the valve member and being adapted to make contact with the pair of contacts and thereby bridge the pair of contacts to close the switch construction to operate electronic switching, the electronic switching being disposed inside the housing.Type: GrantFiled: August 23, 1978Date of Patent: December 30, 1980Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4242082Abstract: A fluid flow sensing switch device having a housing provided with a fluid flow passage therethrough defined by an inlet and an outlet separated by a valve seat controlled by a movable valve member that is operated by the pressure differential between the inlet and the outlet, the device having an electrical switch construction operatively associated with the valve member and having the switch contacts thereof actuated by the pressure differential. The switch contacts of the switch construction are disposed in the fluid flow passage so as to be exposed to fluid flow therethrough and have a part thereof carried by the valve member.Type: GrantFiled: August 23, 1978Date of Patent: December 30, 1980Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4159800Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: February 24, 1978Date of Patent: July 3, 1979Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4123036Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: November 18, 1976Date of Patent: October 31, 1978Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4108370Abstract: A fuel control system having a temperature responsive control device for thermostatically controlling the flow of fuel from a source thereof to a burner and having an adjustable by-pass means by-passing the temperature responsive valve of the device for providing a by-pass flow of fuel from the source to the burner to sustain combustion at the burner, the by-pass means comprising a tubular member provided with an inlet and an outlet for respectively being interconnected to the source and to the burner. The tubular member has a passage therein interconnecting the inlet to the outlet and carries an adjusting member for adjusting the rate of flow of fuel through the passage between the inlet and the outlet of the tubular member and, thus, the amount of fuel being by-passed to the burner. The tubular member has means for interconnecting the source to a pilot burner independent of the passage thereof.Type: GrantFiled: February 23, 1977Date of Patent: August 22, 1978Assignee: Robertshaw Controls CompanyInventor: Roy C. Demi
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Patent number: 4085891Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with or against the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: November 18, 1976Date of Patent: April 25, 1978Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4007872Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with or against the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: April 23, 1975Date of Patent: February 15, 1977Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4007907Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: April 23, 1975Date of Patent: February 15, 1977Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 4007760Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with or against the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: August 15, 1975Date of Patent: February 15, 1977Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 3989064Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The poppet valve member can work with or against the pressure of the fuel from the source thereof when the poppet valve member is being moved to its closed position.Type: GrantFiled: December 9, 1974Date of Patent: November 2, 1976Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi
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Patent number: 3979103Abstract: A fuel control device having a passage therethrough for interconnecting a fuel source with a main burner and having a poppet valve arrangement that is directly manually operated for opening and closing the passage so as to control the flow of fuel from the source to the main burner, the poppet valve arrangement having a poppet valve member that is moved relative to its valve seat upon the manual manipulation of a selector of the control device. The selector locks with the control device in the "off" position and the control device has a long and gradual cam surface to permit the selector to be moved to its locked "off" position without excessive "feel".Type: GrantFiled: April 23, 1975Date of Patent: September 7, 1976Assignee: Robertshaw Controls CompanyInventors: Charles D. Branson, Roy C. Demi