Geometrical instruments – Gauge – Collocating
Reexamination Certificate
2005-07-19
2005-07-19
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Gauge
Collocating
C033S664000, C033S415000, C052S183000
Reexamination Certificate
active
06918190
ABSTRACT:
A mechanism for simultaneous angle adjustment of support elements (4), particularly for setting up a mold structure for the steps of a straight staircase, has a casing (9) in which at least two interdependent shafts (6) are arranged. Each of the shafts (6) extends into the next shaft in a nested configuration where the successive intervals between the shafts are adjustable. Each shaft has a threaded portion (6a) traversing an internally threaded block (11) that is located in the casing and holds one of the support elements (4). A shaft (12), running parallel to the two or more shafts (6), passes through the blocks and is equipped with eccentrics (13), where each of the eccentrics (13) is respectively associated with one of the blocks (11). The eccentrics are constrained to share the rotation of the shaft (12), and the eccentric of each block interacts with the respective support element that is associated with that block, so that by pushing against the support element, the eccentric sets the support element to a predetermined slope angle (A).
REFERENCES:
patent: 2212331 (1940-08-01), Tracy
patent: 3250014 (1966-05-01), Watson
patent: 5461798 (1995-10-01), Ribeiro
Courson Tania C.
Darby & Darby
Fulton Christopher W.
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