Nip mechanism and method of operation thereof
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United States of America Patent
Stats
-
Nov 16, 2004
Grant Date -
Nov 27, 2003
app pub date -
May 22, 2002
filing date -
May 22, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nip mechanism for a substrate transfer system includes: a first nip roller; a second nip roller located substantially vertically above the first nip roller; and a drive motor for driving the first nip roller and the second nip roller to feed a substrate between the first nip roller and the second nip roller when the drive motor is driven in a first direction. The second nip roller creates and maintains a nip with the first nip roller due to a force of gravity without using a spring or other mechanical device while the drive motor is driven in the first direction. The drive motor engages a one-way clutch for engaging a roller separation mechanism to raise and separate the second nip roller from the first nip roller when the drive motor is driven in a second direction. The first and second nip rollers maintain substantial vertical alignment with one another when the drive motor is driven in either direction.
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