Position adjusting spacer and method for adjusting the...

Details Position adjusting spacer and method for adjusting the... Position adjusting spacer and method for adjusting the...

2004-12-27

2008-11-18

Brinson, Patrick F (Department: 3754)

Pipes and tubular conduits

Repairing

Patches

C138S097000, C138S148000, C138S112000, C138S113000

Reexamination Certificate

active

07451783

ABSTRACT:
A spacer is constituted by overlapping on a first wedge-shaped member, whose upper surface is inclined at a prescribed angle, a second wedge-shaped member, whose lower surface is inclined at the same angle. This spacer is inserted in the gap between a inner wall surface of an existing pipe and the outer periphery of a rehabilitating pipe. Latching teeth are formed in the inclined surfaces of the first and second wedge-shaped members so that, when pressing the second wedge-shaped member to move it toward the first wedge-shaped member in the insertion direction, it cannot move in the direction the reverse of the insertion direction. Upon moving the second wedge-shaped member to the respective latch positions, the overall height of the spacer is successively increased in steps at a fine pitch, thus enabling the adjustment of the position of the rehabilitating pipe with respect to the existing pipe to be performed simply.

REFERENCES:
patent: 1075842 (1913-10-01), McCutchen
patent: 4498811 (1985-02-01), Fern et al.
patent: 6018914 (2000-02-01), Kamiyama et al.
patent: 2003/0136455 (2003-07-01), Kamiyama et al.
patent: 2004/0108009 (2004-06-01), Kamiyama et al.
patent: 2003286742 (2003-10-01), None

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