Appeal No. 95-3317
Application No. 07/937,522
in the application.
The subject matter on appeal is directed to a process for
making a safety pipet tube. Claim 12 is exemplary of the
invention and reads as follows:
12. A process for making a safety pipet tube comprising
the steps of
taking an elongated glass tube having an outer surface,
an axial bore with an inner surface, and upper and lower ends
which are open,
taking a resilient sheet having an inner layer of
adhesive,
heating the sheet until the adhesive layer becomes tacky,
rolling the tube over the adhesive layer to wrap the
sheet around the tube to form a protective wrapping for the
tube with an inner layer of the sheet wrapped around the outer
surface of the tube and an outer layer of the sheet wrapped
around the inner layer of the sheet,
adhering the resilient sheet to the outer surface of the
tube and to the inner layer of the sheet, and
allowing the wrapped tube to cool to room temperature,
whereby to provide a safety glass tube pipet which
protects a user from injury and infection should the glass
tube break and form jagged edges which could cut the user were
it not for the protection provided by the resilient sheet.
The references of record relied upon by the examiner in
rejections of the claims under 35 U.S.C. § 103 are:
Nitzsche et al. (Nitzsche) 3,230,121 Jan. 18,
2
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