Geometrical instruments – Gauge – Collocating
Reexamination Certificate
2008-09-26
2010-11-30
Johnson, Amy Cohen (Department: 2841)
Geometrical instruments
Gauge
Collocating
C033S648000, C052S749120
Reexamination Certificate
active
07841101
ABSTRACT:
A roofing installation device for enabling quick and accurate installation of shingle type roofing. The device includes a generally c-shaped inner portion and correspondingly c-shaped outer portion slidable relative to one another. The inner and outer portions include at least one spring there between in an expansion state such that manual compression allows a user to clamp the device onto a first shingle layer. An adjustable portion is affixed to the inner portion and includes a stop edge to allow placement of a second shingle layer in such a manner to form a predetermined surface exposure of the first shingle layer. The predetermined surface exposure is variable by moving the adjustable portion relative to the inner portion. Such adjustment is accomplished in a quick, manual manner.
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Cohen Johnson Amy
Haszko Dennis R.
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