Horology: time measuring systems or devices – Chronological
Reexamination Certificate
2008-06-10
2008-06-10
Caldarola, Glenn (Department: 1797)
Horology: time measuring systems or devices
Chronological
C508S280000, C508S441000, C508S429000
Reexamination Certificate
active
07385880
ABSTRACT:
A grease composition for a precision instrument comprising a lithium soap grease or a urea grease, and an anti-wear agent, wherein the lithium soap grease and the urea grease are each a grease having no hydroxyl group in a molecule, and the anti-wear agent is contained in an amount of 0.1 to 20% by weight based on the total amount of the grease composition. By the use of the grease composition for a sliding mechanism of a precision instrument such as a watch, an appropriate slip torque can be obtained, and the precision instrument such as a watch can operate stably.
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Dickey, J.R., Lubrication and Lubricants, in Kirk-Othmer Encyclopedia of Chemical Technology, 2005, John Wiley & Sons, p. 31. Retrieved from the internet at <http://www.mrw.interscience.wiley.com/emrw/9780471238966/kirk/article/lubrboos.a01/current/pdf>.
Caldarola Glenn
Citizen Holdings Co. Ltd.
Goloboy Jim
The Webb Law Firm P.C.
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