A system and/or method for heat treatment of substrates. The system includes a housing that defines a heating chamber and a door assembly that encloses an opening of the heating chamber. The door assembly may be opened and closed. When opened, the door assembly defines a loading slot for loading substrates into and unloading substrates from the heating chamber. The door assembly is coupled to a first actuator and a control unit is coupled to the actuator to move the door assembly between a plurality of loading positions. The system may also include a loading assembly mounted to the door assembly to facilitate insertion and removal of substrates from the heating chamber.

A sample heating device includes: an opening/closing cover provided to be movable in a horizontal direction between a position above an opening of a mounting port and a position displaced from the position above the opening, and a cover sliding mechanism that is engaged with a part of a sample boat conveying portion when the sample boat conveying portion comes to a predetermined position in a horizontal plane and moves the opening/closing cover in the horizontal direction according to upward and downward movements of the sample boat conveying portion so that the opening/closing cover is provided at the position directly above the opening of the mounting port when the sample boat conveying portion comes to a predetermined height.

A mobile removable hearth skid for a furnace and/or cooling chamber including: a base, the base including a top horizontal surface supporting a refractory platform which possesses a perimeter edge including a front perimeter edge, a rear perimeter edge, and at least two side perimeter edges. The rear perimeter edge and the at least two side perimeter edges form a continuous shoulder extending beyond the base perimeter edge. Also disclosed is a furnace and/or cooling chamber including a refractory lining with a continuous ledge at the bottom edges of the refractory linings mounted on the rear wall and the at least two side walls. A gap is formed by the furnace supports between a bottom surface of the ledge and a surface supporting the furnace supports. The shoulder and ledge form a removable refractory seal.

A milling apparatus for mounting and moving curtains that contain scale, water and/or other debris within a hood structure. The hood structure can form a housing that contains fixed metal curtains and/or movable metal curtains. The movable metal curtain can include a cartridge attached to the movable metal curtain. The cartridge can be attached to the movable metal curtain. The cartridge can be attached to and/or mounted on or with respect to a support, such as a support structure mounted and/or fixed with respect to the housing. A lock can be used to selectively secure the position of the cartridge with respect to the support.

The analyzer of the present invention is specifically adapted to provide moisture determinations for foods and other agricultural material. It allows the operator to introduce a precise weight of sample into a crucible in a closed furnace in a controlled environment through an access port in the furnace cover. The access port in the cover can be tapered to allow easy access to an underlying aligned crucible and allow an operator to add and remove sample material from the crucible until a precise desired sample weight is reached as measured by a balance within the furnace. The access port is enclosed by an insulated cover after the samples are sequentially placed in the crucibles.

In a dental furnace or dental press furnace comprising a furnace base (14) which is provided with a supporting surface for at least one dental restoration part, a furnace head (12) is provided which is connected to the furnace base (14) via a joint device (16) attached to the furnace base (14) and which is pivotable relative to the furnace base (14) via said device. Pivoting takes place about a pivot axis (40) which extends substantially parallel to the supporting surface, as well as a motor (42) which acts on the joint device (16) for the pivotable movement of the furnace head (12). The pivot axis (40) extends outside of the furnace head (12) and outside of the joint device (16).

In a dental furnace or dental press furnace comprising a furnace base (14) which is provided with a supporting surface for at least one dental restoration part, a furnace head (12) is provided which is connected to the furnace base (14) via a joint device (16) attached to the furnace base (14) and which is pivotable relative to the furnace base (14) via said device. Pivoting takes place about a pivot axis (40) which extends substantially parallel to the supporting surface, as well as a motor (42) which acts on the joint device (16) for the pivotable movement of the furnace head (12). The pivot axis (40) extends outside of the furnace head (12) and outside of the joint device (16).

A sliding style furnace cap features a furnace tube cap and a slider. The furnace tube cap has a first cap portion to couple to a furnace tube of a furnace, and a second cap portion with a bearing assembly arrangement. The furnace tube cap also has an inner tube cap channel passing through it with an inner tube cap channel sealing arrangement configured to extend outside the inner tube cap channel. The slider has an orifice/channel configured therein passing through the slider, couples and slides in the bearing assembly arrangement from an inject position to a rinse position, and vice versa, has a cam-like contoured surface with a first ramp configured to couple a first raised surface and an intermediate lower surface, and with a second ramp configured to couple the intermediate lower surface to a second raised surface. The slider also moves towards the inner tube cap channel and causes the bearing assembly arrangement to force a part/side of the slider to push against the inner channel sealing arrangement as part of the roller bearing arrangement rides up either the first ramp to the first raised portion when the slider is moved to the inject position, or the second ramp to the second raised portion when the slider is moved to the rinse position, and the first part of slider configured to seal the inner tube cap channel sealing arrangement when the slider is in either the inject position or the rinse position. The slider also moves away from the inner tube cap channel and causes the bearing assembly arrangement to allow the part/side of the slider to float above the inner channel sealing arrangement as the part of the roller bearing assembly rides along the intermediate lower surface when the slider is in transition between the inject position and the rinse position.

A sliding style furnace cap features a furnace tube cap and a slider. The furnace tube cap has a first cap portion to couple to a furnace tube of a furnace, and a second cap portion with a bearing assembly arrangement. The furnace tube cap also has an inner tube cap channel passing through it with an inner tube cap channel sealing arrangement configured to extend outside the inner tube cap channel. The slider has an orifice/channel configured therein passing through the slider, couples and slides in the bearing assembly arrangement from an inject position to a rinse position, and vice versa, has a cam-like contoured surface with a first ramp configured to couple a first raised surface and an intermediate lower surface, and with a second ramp configured to couple the intermediate lower surface to a second raised surface. The slider also moves towards the inner tube cap channel and causes the bearing assembly arrangement to force a part/side of the slider to push against the inner channel sealing arrangement as part of the roller bearing arrangement rides up either the first ramp to the first raised portion when the slider is moved to the inject position, or the second ramp to the second raised portion when the slider is moved to the rinse position, and the first part of slider configured to seal the inner tube cap channel sealing arrangement when the slider is in either the inject position or the rinse position. The slider also moves away from the inner tube cap channel and causes the bearing assembly arrangement to allow the part/side of the slider to float above the inner channel sealing arrangement as the part of the roller bearing assembly rides along the intermediate lower surface when the slider is in transition between the inject position and the rinse position.

A furnace door sealing device for a low-pressure diffusion furnace is provided. The furnace door sealing device includes a furnace door, a fixed shaft and a fixed base which are coaxially arranged in sequence from front to back. A bearing pedestal is fixed at the center of the rear end surface of the furnace door. A centripetal knuckle bearing is arranged in the bearing pedestal. An outer ring of the centripetal knuckle bearing is fixed in the bearing pedestal. An inner ring of the centripetal knuckle bearing fixedly sleeves the front end of the fixed shaft. The rear end of the fixed shaft is fixed in the fixed base. A supporting plate is also fixed on the front end surface of the fixed base. Multiple spring adjusting assemblies are arranged on the supporting plate at an interval.