A cooking apparatus including a heating device, a regulating device including a regulating shaft and configured to control the heating device according to an operation of the regulating shaft, and a knob assembly provided to operate the regulating device. Where the knob assembly includes a knob body, a knob shaft coupled to the regulating shaft and a shaft holder provided to move together with the knob body. The shaft holder including a first shaft guide configured to guide the knob shaft to operate the regulating device and a second shaft guide configured to guide the knob shaft to prevent operation of the regulating device.

A cooking appliance capable of preventing a user's unintended rotation of a knob assembly includes: a main body including a control panel; a valve positioned inside the main body, and including a valve shaft being pushable and rotatable; and a knob assembly including an inner knob coupled with the valve shaft, and an outer knob being movable with respect to the inner knob in a first direction in which the outer knob approaches the inner knob, wherein, when the outer knob moves by a first push distance in the first direction, the valve shaft and the inner knob are prevented from rotating.

A cooking appliance or knob assembly may include a surface panel, a knob switch, a support plate, a control body, a central projection, and a spacing stake. The knob switch may be disposed behind the surface panel. The knob switch may include an internal spring and a slidable stem extending through a central axis. The slidable stem may be in forward-biased mechanical communication with the internal spring. The support plate may be rotabably mounted about the slidable stem. The control body may be mounted to the slidable stem. The control body may be rotationally fixed to the support plate and slidable relative thereto. The control body may include a primary grip extending about at least a portion of the slidable stem. The central projection may be disposed radially inward from the primary grip and define an axially fixed stop surface disposed forward from the control body.

A handle assembly for an outlet valve for a tank, where the outlet valve has a stem that is actuated to open and close the outlet valve, is provided. The handle assembly includes a handle. A shaft is attached to the handle, and an adapter attached to the shaft. A bracket is adapted to mount the shaft to the tank so that the shaft is pivotally mounted with respect to the tank and movable with respect to the outlet valve between an engaged position, where the adapter is connected to the stem, and a disengaged position, where the adapter is disconnected from the stem.

A knob assembly for a gas valve of a cooking appliance and a method of assembling said knob assembly is provided. The knob assembly can include a knob configured to engage a valve stem of the gas valve and a lock assembly including a locking element and a locking plate. The locking element can include at least one cam element that can be engaged by at least one projection carried by the locking plate. The locking plate can be configured to rotate relative to the locking element between a first position in which the at least one projection engages the at least one cam element and a second position in which the at least one projection is disengaged from the at least one cam element, and wherein in the first position the at least one cam element inhibits actuation of the gas valve by the knob.

Emergency hand crank drive consisting of a load shaft that is to be made to rotate, and a crank arm hingedly connected to said load shaft, and a coupling piece on said load shaft and a catch, which is fixedly connected to said crank arm and which has a shape that is complementary to the shape of said coupling piece and which can be releasably connected to said coupling piece, whereby a rotary sliding piece is mounted on said load shaft in such a way as to be movable in the longitudinal direction of said load shaft and be rotatable around the longitudinal direction thereof and said crank arm is hingedly secured to said rotary sliding piece.

A control knob for controlling the operation of a component of a household appliance is disclosed. The control knob includes a body configured to be attached to a rotatable rod extending from the appliance. A locking element reversibly secures the body in at least one rotational position. The locking element is movable between a first position and a second position. The locking element is configured to engage with a notch to rotatably secure the body in the at least one rotational position when the locking element is in the first position, and to disengage from the notch to permit the body to be rotated when the locking element is in the second position.

The cooking appliance according to the disclosure includes a main body having at least one heat source, a valve that includes a valve shaft, and adjusts an amount of fuel supplied to the at least one heat source according to an opening degree or a closing degree of the valve, and a knob apparatus that is coupled with the valve shaft and is installed on the main body. The knob apparatus includes a knob holder mounted on the main body, a knob that is rotatively supported by the knob holder, and an interference member that varies a rotating force by which the knob is rotatable while being supported by the knob holder and while the knob is at a predetermined location.

A cooking appliance capable of preventing a user's unintended rotation of a knob assembly includes: a main body including a control panel; a valve positioned inside the main body, and including a valve shaft being pushable and rotatable; and a knob assembly including an inner knob coupled with the valve shaft, and an outer knob being movable with respect to the inner knob in a first direction in which the outer knob approaches the inner knob, wherein, when the outer knob moves by a first push distance in the first direction, the valve shaft and the inner knob are prevented from rotating.

A safety knob assembly for actuating a burner is provided. The safety knob assembly includes a dial, the dial includes at least one alignment hole, an interlock disk, the interlock disk includes at least one locking pin, the at least one locking pin having an outer diameter less than then the inner diameter of the at least one alignment hole, a safety post, the safety post connected to the dial and the safety post including a locking hub, the locking hub connected to a switch post, a spring, the spring sized such that the inner diameter of the spring is larger than the outside diameter of the safety post, the spring positioned on the safety post and positioned between the dial and the locking post, wherein the at least one locking pin of the interlock disk engages the at least one alignment hole of the dial as a bottom surface of the dial approaches a top surface of the interlock disk, wherein the interlock disk engages the locking hub as a bottom surface of the interlock disk approaches the locking hub, and wherein the burner is actuated as the dial, the interlock disk, the safety post and the locking hub are positioned to rotate the switch post relative to the burner to allow the flow of energy from an energy source to the burner.