Vibration Damper for Isolator
First Claim
1. A system comprising a chamber (10) defining a sealed inner space (11) and at least one vibration damper or isolator (15) for supporting a mass or payload (14) arranged within said space, said vibration damper comprising:
- a hollow member (18) having an open inner end portion extending into the sealed space of the chamber,a support structure (21) for supporting said mass,a bellows (24) having its opposite ends sealingly connected to the hollow member and the support structure, respectively, so as to seal the inner space (26) of the hollow member from the inner space of the chamber, andmeans (20) for exposing a surface part of the support structure to a gas pressure different from that of the sealed inner space of the chamber, so as to at least partly balance the weight of the support structure and said mass supported thereby.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for use in for example the production of semiconductors comprises a chamber (10) having a sealed inner space (11), such as a vacuum chamber. A heavy mass (14), such as a table, is arranged within the vacuum chamber and is supported or carried by one or more vibration dampers or isolators (15). Each vibration isolator comprises a hollow or tubular member (18) having an open inner end portion, which extends into the sealed space of the chamber (10). A support structure (21) is arranged at the inner end of the hollow member for supporting the mass or table (14). The opposite ends of a bellows (24) are sealingly connected to the hollow member (18) and the support structure (21), respectively, so as to seal the inner space (26) of the hollow member (18) from the inner space (11) of the chamber (10). A surface part of the support structure is exposed to a to a gas pressure different from that of the sealed inner space of the chamber, so as to at least partly balance the weight of the support structure (21) and the mass or payload (14) supported thereby.
14 Citations
18 Claims
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1. A system comprising a chamber (10) defining a sealed inner space (11) and at least one vibration damper or isolator (15) for supporting a mass or payload (14) arranged within said space, said vibration damper comprising:
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a hollow member (18) having an open inner end portion extending into the sealed space of the chamber, a support structure (21) for supporting said mass, a bellows (24) having its opposite ends sealingly connected to the hollow member and the support structure, respectively, so as to seal the inner space (26) of the hollow member from the inner space of the chamber, and means (20) for exposing a surface part of the support structure to a gas pressure different from that of the sealed inner space of the chamber, so as to at least partly balance the weight of the support structure and said mass supported thereby. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification