Patents by Inventor John D. McNair
John D. McNair 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: 6059445Abstract: A blender 30 includes a base housing 32, a jar mount 34 which nests on the housing, and a jar 36, which is threadedly attached to the jar mount. A motor 66 is contained within the base housing 32 and drives a blending implement 74 located within the base of the jar 36. The jar mount 34 rests on a plurality of compliant pads 88 to support the jar mount and the jar 36 during operation of the blender 30. An extension 42 of the base housing 32 provides an enclosure for a switch assembly 68 which includes four switches 96 for facilitating external control of the operation of the motor 66 and the blender 30. Each of four compliant actuator pads 54 extend through respective openings 148 in a cover 50 of the extension 42 and engage a respective actuator block 158 which is mounted on a pivotable panel 152.Type: GrantFiled: April 10, 1998Date of Patent: May 9, 2000Assignee: HP Intellectual Corp.Inventors: Robert A. St John, John D. McNair, Wong Man Bun, Siu Kwai Keung
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Patent number: 5911505Abstract: A stand mixer comprising a drive shaft, a transmission shaft, and a coupling. The drive shaft is rotatably held in a first housing. The transmission shaft is held in a second housing. The second housing is pivotally mounted to the first housing so that the first housing may be pivoted relative to the second housing. The coupling connects the drive shaft to the transmission shaft when the first housing is in an operating position. The coupling includes a self aligning coupling. The self aligning coupling comprises a first member, a second member and a spring. The first member is inserted into and intermeshed with the second member to transfer power between the drive shaft and the transmission shaft. When the first housing is pivoted to the operating position the spring biases the first member against the second member to intermesh the first member with the second member.Type: GrantFiled: November 30, 1998Date of Patent: June 15, 1999Assignee: HP Intellectual Corp.Inventors: Robert A. St. John, Ngai Ming Leung, Charles Z. Krasznai, John D. McNair
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Patent number: 5908242Abstract: A stand mixer comprising a lower housing with a support rotatably mounted thereto and a mixing bowl removably connected to the support. Between the mixing bowl and the support is a self-locking connection. The self-locking connection comprises the support having an aperture and the mixing bowl having a member fixably connected to the mixing bowl. The member fixedly connected to the mixing bowl is adapted to be inserted into the aperture of the support. The member has an engagement surface formed therein. The support has a cam surface. Rotation of the support drives the cam surface upon the engagement surface of the member. This rotates the member in unison with the support and cams down the mixing bowl against the support to lock the mixing bowl to the support.Type: GrantFiled: November 6, 1998Date of Patent: June 1, 1999Assignee: HP Intellectual Corp.Inventors: Robert A. St. John, Paul R. Holbrook, John D. McNair
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Patent number: 5490370Abstract: There is disclosed a lawn or grass mower having a cutting mechanism (14) driven by an electric motor (10), the electric motor (10) being powered by a rechargeable lead acid battery (11), the battery (11) being protected against damage caused as a result of over discharge by control means (13), said control means (13) being able to sequentially sample battery voltage discharge levels and to determine when the sampled battery voltage discharge level has dropped below a predetermined minimum level at which point disabling means (14) is activated to prevent the mower from being used again until the battery means (11) has been recharged through a complete recharging regime.Type: GrantFiled: August 18, 1993Date of Patent: February 13, 1996Assignee: Black & Decker Inc.Inventors: John D. McNair, Aik P. Cheah
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Patent number: 5458052Abstract: A toaster is disclosed capable of retaining a fire within the body of the toaster should such a fire commence for any reason, the toaster comprising an outer housing, an inner enclosure defining a toasting compartment, an open access slot enabling access to the toasting compartment, movable flameproof member means either closing the access slot or opening same, movable carriage means in the toasting compartment to carry a product to be toasted, and latch means to hold the movable flameproof member means closed until manually released thereby ensuring a person is at the toaster should a fire have commenced in the toasting chamber.Type: GrantFiled: November 1, 1993Date of Patent: October 17, 1995Assignee: Black & Decker Inc.Inventors: John D. McNair, Howard C. Schulz, Aik P. Cheah, Gerard P. Gilliland
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Patent number: 5423246Abstract: A cover for a toaster capable of retaining flame from a fire within the body of the toaster. The cover comprises a first wall adapted to overlie an access opening to a toaster compartment within the toaster, the first wall having a plurality of slot-like apertures formed therein with a second member partially or fully overlying each slot-like aperture but being located in a plane spaced from that of the first wall. The slot-like apertures are disposed transversely to a longitudinal axis of the toasting compartment whereby flame within the toasting compartment is substantially prevented from passing through the cover but convection heat from within the toasting compartment is capable of passing through the slot like apertures.Type: GrantFiled: June 2, 1994Date of Patent: June 13, 1995Assignee: Black & Decker Inc.Inventors: John D. McNair, Gerard P. Gilliland
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Patent number: 5396914Abstract: A dispenser device (10) for dispensing liquid detergent concentrate or cleaning agent into a washing zone of a washing appliance during a phase of a washing cycle. The washing appliance has a water pump (6) to provide the normal functions associated with washing cycles. Water pressure from the pump is utilised to squeeze or eject a predetermined quantity of concentrate from a container (28) into the washing zone at a desired phase of the washing process. In one adaptation, a container for the concentrate is in the form of a flexible bag (28) including an outlet nozzle (32) sealed until first placed in a receptacle (11) for use. In use, the nozzle (32) protrudes through an opening in a closure (12) of the receptacle into the washing zone. Via a second opening in the receptacle a small volume of water under pressure from the pump is directed under the timed control of a valve (26) at the required phase of the washing cycle into the closed receptacle.Type: GrantFiled: June 29, 1992Date of Patent: March 14, 1995Assignee: Vulcan Australia LimitedInventor: John D. McNair
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Patent number: 5386100Abstract: An electric immersion water heater comprises a vessel with a heating element having cold tail ends extending individually through a side wall of the vessel. Temperature sensing elements sense temperature levels of an outer wall of the heating element outwardly of the vessel and are arranged to disconnect power to the element upon either a boil condition within the vessel occurring or upon sensing an elevated temperature indicative of dry or partially dry operation within the vessel. The heating element further including a jacket defining a space around the outer wall of a core part of the heating element within the vessel adjacent the vessel wall and arranged to fill with steam upon a boil condition occurring in the vessel during normal operation.Type: GrantFiled: October 25, 1993Date of Patent: January 31, 1995Assignee: Black & Decker Inc.Inventor: John D. McNair
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Patent number: 5304782Abstract: An electric toaster that enables power to be disconnected from the heating elements upon completion of a toasting cycle regardless of the position of the main product supporting the carriage in the toasting compartment. The toaster has an electromagnetic latch and an auxiliary member carried by the main carriage which is movable relative to the main carriage. The auxiliary member is urged by biasing member to move in a direction away from the electromagnetic latch but able to be held thereby when the latch is activated. The auxiliary member also is arranged to close main power supply contacts to supply power to the heating elements when the auxiliary member is held by the latch, but to open said main supply contacts when the auxiliary member moves away from the latching means under action of the biasing member. The toaster may also include a sensor to sense abnormal conditions in the toaster to disconnect power from the heating elements when such abnormal conditions occur.Type: GrantFiled: March 5, 1993Date of Patent: April 19, 1994Assignee: Black & Decker Inc.Inventors: John D. McNair, Alk P. Cheah
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Patent number: 5125068Abstract: A temperature control device for a fluid heating vessel senses ambient temperature and controls or adjusts the set point at which power is reduced to an element for heating the fluid in the heating vessel, in order to prevent boil-over of the fluid. The The point is increased for an ambient temperature higher than a predetermined ambient temperature and is decreased for an ambient temperature lower than said predetermined ambient temperature.Type: GrantFiled: July 30, 1991Date of Patent: June 23, 1992Assignee: Black & Decker Inc.Inventors: John D. McNair, David A. Richards