Dentistry – Apparatus – Hand manipulatable implement
Patent
1996-12-20
1998-03-03
Wilson, John J.
Dentistry
Apparatus
Hand manipulatable implement
A61C 504
Patent
active
057228310
ABSTRACT:
An apparatus for fastening a matrix band to a tooth includes an elongated frame, an elongated slide member, a locking unit and a single-direction positioning mechanism. A front end of the support frame is formed with a retaining member which engages slidably overlapping end portions of the matrix band in order to orient selectively a loop portion of the matrix band to predetermined directions. The slide member engages slidably and parallelly with the support frame. A front end of the slide member is formed with a sliding block. The locking unit is provided on the sliding block of the slide member for locking releasably the overlapping end portions in the sliding block. The single-direction positioning mechanism permits the sliding block of the slide member to move away from the retaining member in order to pull the overlapping end portions of the matrix band to move rearward, but locks releasably the slide member relative to the support frame in order to prevent the sliding block from being moved toward the retaining member.
REFERENCES:
patent: 2286021 (1942-06-01), Stanford
patent: 3425125 (1969-02-01), Bergendal
patent: 3436831 (1969-04-01), Tofflemire
patent: 5460525 (1995-10-01), Rashid
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