| CPC B25H 1/20 (2013.01) [B08B 3/02 (2013.01); B08B 5/02 (2013.01); B08B 15/00 (2013.01); B08B 15/02 (2013.01)] | 20 Claims |

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1. A housing assembly for selectively receiving a part; the housing assembly comprising:
a platform;
a pad fixed to the platform, and the pad has a frictional surface for maintaining a position of the part relative to the pad when the part is disposed on the frictional surface; and
a door apparatus coupled to the platform and surrounding the pad, and wherein the door apparatus is movable to an open position in which the frictional surface of the pad is exposed outside of the door apparatus for receiving the part and a closed position in which the frictional surface of the pad is concealed inside of the door apparatus; and
an actuator comprising an axially movable shaft mechanically coupled to the door apparatus and configured to move the door apparatus, the shaft being engaged by the part, wherein:
a first axial displacement of the axially movable shaft by engagement with the part causes the door apparatus to move to the open position; and
a second axial displacement of the axially movable shaft, in a direction opposite to the first axial displacement, occurs in response to a biasing member and causes the door apparatus to return to the closed position upon disengagement of the part.
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