1. A refrigerator comprising:
a cabinet;
a first storage chamber defined within the cabinet;
a first door configured to open and close at least a portion of the first storage chamber by rotating;
a second storage chamber that is smaller than the first storage chamber, that is defined at a side of the first door, and that is configured to move with the first door when the first door rotates between opened and closed positions;
a second door configured to open and close the second storage chamber by rotating in a same direction as the first door, that enables access to the second storage chamber when the first door is oriented in a closed position, and that includes a recessed portion at an uppermost edge of the second door at a side of the second door that faces the first door when the second door is oriented in a closed position, an uppermost edge of the second door being flush with an uppermost edge of the first door when the second door is oriented in a closed position and the recessed portion of the second door being a cutout region in an uppermost corner of the second door; and
a hinge that attaches to an upper portion of the second door, that enables rotation of the second door, and that is located in the recessed portion at the uppermost edge of the second door such that the hinge is hidden by a front side of the second door when the second door is oriented in a closed position, the front side of the second door being a side of the second door that is furthest from the first door when the second door is oriented in a closed position and a main body of the hinge being accommodated in the cutout region in the uppermost corner of the second door.
2. The refrigerator of claim 1, wherein the first door includes a recessed portion at an uppermost edge of the first door at a position adjacent to the recessed portion of the second door when the second door is oriented in a closed position, the recessed portion of the first door being a cutout region in an uppermost corner of the first door.
3. The refrigerator of claim 2, wherein the hinge attaches to the first door at the recessed portion of the first door.
4. The refrigerator of claim 3, further comprising:
a projection positioned in front of the recessed portion of the second door and configured to project upward, the projection covering the hinge when viewed from the front side of the second door.
5. The refrigerator of claim 3, wherein the hinge comprises a rotational shaft positioned on the recessed portion of the second door and a connection member that connects the rotational shaft to the first door.
6. The refrigerator of claim 1, wherein the hinge has a curved shape.
7. The refrigerator of claim 6, wherein the hinge comprises a rotational shaft positioned on the recessed portion of the second door and a connection member that connects the rotational shaft to the first door, wherein the connection member has a curved shape.
8. The refrigerator of claim 1, wherein the hinge is a second hinge, and the refrigerator further comprises:
a first hinge that attaches to a rotational shaft of the first door, that attaches to the cabinet, and that enables rotation of the first door.
9. The refrigerator of claim 8:
wherein the first door includes a recessed portion at an uppermost edge of the first door at a position adjacent to the recessed portion of the second door when the second door is oriented in a closed position, the recessed portion of the first door being a cutout region in an uppermost corner of the first door;
wherein the second hinge attaches to the first door at the recessed portion of the first door;
wherein the first hinge attaches to the rotational shaft of the first door at the recessed portion of the first door and a main body of the first hinge is accommodated in the cutout region in the uppermost corner of the first door; and
wherein the first hinge is hidden by the front side of the second door when the second door is oriented in a closed position.
10. The refrigerator of claim 9:
wherein the second hinge comprises a second rotational shaft positioned on the recessed portion of the second door and a second connection member that connects the second rotational shaft to the first door at the recessed portion of the first door; and
wherein the first hinge comprises a first rotational shaft positioned on the recessed portion of the first door and a first connection member that connects the first rotational shaft to the cabinet.
11. The refrigerator of claim 1, wherein the second door aligns with three edges of the first door when the second door is oriented in a closed position.
12. The refrigerator of claim 1, wherein the second door spans an entire width of the first door.
13. The refrigerator of claim 12, wherein a width of the second door is substantially identical to a width of the first door.
14. A refrigerator comprising:
a cabinet;
a first storage chamber defined within the cabinet;
a first door configured to open and close at least a portion of the first storage chamber by rotating;
a second storage chamber that is smaller than the first storage chamber, that is defined at a side of the first door, and that is configured to move with the first door when the first door rotates between opened and closed positions;
a second door that is configured to open and close the second storage chamber by rotating in a same direction as the first door and that enables access to the second storage chamber when the first door is oriented in a closed position;
a first rotational shaft that is coupled to an upper surface of the first door and that establishes a first rotational axis for the first door, the upper surface of the first door being a top horizontal face of the first door that is coplanar with a ceiling of the cabinet;
a second rotational shaft that is coupled to an upper surface of the second door and that establishes a second rotational axis for the second door, the upper surface of the second door being a top horizontal face of the second door that is coplanar with the ceiling of the cabinet;
a first connection member configured to connect the first rotational shaft to the cabinet; and
a second connection member configured to connect the second rotational shaft to the upper surface of the first door.
15. The refrigerator of claim 14, wherein the first door includes a recessed portion at the upper surface of the first door, and the recessed portion of the first door is a cutout region in an uppermost corner of the first door.
16. The refrigerator of claim 15, wherein the first rotational shaft is positioned on the recessed portion of the first door and a main body of the first connection member is accommodated in the cutout region in the uppermost corner of the first door.
17. The refrigerator of claim 14, wherein the second door includes a recessed portion at the upper surface of the second door at a side of the second door that faces the first door when the second door is oriented in a closed position, and the recessed portion of the second door is a cutout region in an uppermost corner of the second door.
18. The refrigerator of claim 17, wherein the second rotational shaft is positioned on the recessed portion of the second door and a main body of the second connection member is accommodated in the cutout region in the uppermost corner of the second door.
19. The refrigerator of claim 14:
wherein the second door includes a recessed portion at the upper surface of the second door at a side of the second door that faces the first door when the second door is oriented in a closed position, and the recessed portion of the second door is a cutout region in an uppermost corner of the second door;
wherein the first door includes a recessed portion at the upper surface of the first door at a position adjacent to the recessed portion of the second door when the second door is oriented in a closed position, and the recessed portion of the first door is a cutout region in an uppermost corner of the first door;
wherein the first rotational shaft is positioned on the recessed portion of the first door and a main body of the first connection member is accommodated in the cutout region in the uppermost corner of the first door;
wherein the second rotational shaft is positioned on the recessed portion of the second door;
wherein the first connection member connects the first rotational shaft to the cabinet; and
wherein the second connection member connects the second rotational shaft to the first door at the recessed portion of the first door and a main body of the second connection member is accommodated in the cutout region in the uppermost corner of the second door.
20. The refrigerator of claim 19, wherein the first rotational shaft, the second rotational shaft, the first connection member, and the second connection member are hidden by a front side of the second door when the second door is oriented in a closed position, the front side of the second door being a side of the second door that is furthest from the first door when the second door is oriented in a closed position.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An apparatus for rotating at least one workpiece, in particular for performing a plasma immersion-assisted treatment, characterized in that the apparatus (10) has:
at least one rotatably driven sample holder in the form of a rotatably mounted, electrically conductive sample rod (1, 11);
a rotary drive (6, 7, 7, 17) that engages on each sample rod (1, 11) in order to rotate it;
a high-voltage lead-in (8, 9, 18, 23) that delivers high voltage to the sample rod (1, 11); and
at least first insulating means (2, 12) that insulate the sample rod(s) (1, 11) from the rotary drive in a manner withstanding high voltage.
2. The apparatus as defined in claim 1, characterized in that the rotary drive engages at one end of the sample rod (1, 11), with interposition of the first insulating means (2, 12).
3. The apparatus as defined in claim 2, characterized in that the first insulating means (2, 12) are each configured as a ceramic insulator in which the respective sample rod (1, 11) is attached in insulated and centered fashion, and which rotates along with the sample rod (1, 11).
4. The apparatus as defined in one of claims 1 through 3, characterized in that the sample rod(s) (1, 11) is mounted at its other end in a pivot bearing (20, 21) that delivers high-voltage potential and is insulated by second insulating means (3, 13), in a manner withstanding high voltage, with respect to a platform (30).
5. The apparatus as defined in one of the foregoing claims, characterized in that the sample rod(s) (1, 11) is or are mounted vertically between the first and second insulating means (2, 12 and 3, 13), the first insulating means (2, 12) being arranged at the top and the second insulating means (3, 13) at the bottom.
6. The apparatus as defined in claim 4 or 5, characterized in that the second insulating means (3, 13) are configured as ceramic support insulators, attached to the adjacent platform (30), having a metal bushing (20) arranged centeredly on them which forms a pivot bearing and in which the sample rod(s) can each rotate in low-friction fashion.
7. The apparatus as defined in claim 6, characterized in that a wiper contact (21) joined to the metal bushing (20) creates a planar high-voltage contact to the sample rod(s) (1, 11).
8. The apparatus as defined in claim 7, characterized in that the wiper contact (21) has a graphite pin resting against the end surface of the sample rod.
9. The apparatus as defined in one of claims 1 through 8, characterized in that several parallel sample rods (1, 11) are provided for the reception of several workpieces, and the rotary drive has two separate drive motors as well as separate power transfer systems, such that the sample rods (1, 11) are rotatable along with the platform (30) both individually and together as a group.
10. The apparatus as defined in one of claims 1 through 9, characterized in that the ceramic insulators serving as insulation means are protected against coating in the plasma by suitably shaped metal shielding cups and metal covers that are insulated with respect to the sample rod(s) (1, 11) that carry high voltage.
11. A method for plasma immersion-assisted treatment in particular of three-dimensionally shaped workpieces, characterized in that the workpiece or workpieces are rotated during the treatment.
12. The method as defined in claim 11, characterized by the provision of a coating unit or pulsed plasma nitriding unit on which, in order to carry out the method, the pulsed single-pole or bipolar high-voltage power supply is retrofitted onto the rotatable sample holder.
13. The method as defined in claim 11, characterized by the use of a rotary apparatus as defined in one of claims 1 through 10.