Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
1996-03-19
1998-03-17
Solis, Erick R.
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
72369, B21D 900
Patent
active
057273154
ABSTRACT:
This rodless cylinder is a rodless cylinder of pneumatic driving slit type, and a cyliner tube is provied with a curved part bent in the axial direction, and a slit of nearly trapezoidal section is formed along the longituinal direction of the inner circumferential side of the curve, and a seal belt with both ends fixed within the cylinder tube is arranged to be fitted to the slit and a piston is inserted within the cylinder. The piston has a piston body and seal pistons connected rockable to both sides of the piston body, and the piston body is provied with a connecting part projecting from the slit to the outside and a belt inserting hole for insertion of the seal belt. On an outer circumferential part of the piston body and the seal pistons, an annular groove with a bottom being a part of a spherical surface is formed and a wear ring having an inner circumferential surface with the same curved surface is inserted slantwise within the annular groove. In the cylinder tube of the rodless cylinder, a slit is formed linearly in the longitudinal direction of the outer circumferential part of a linear tubular material by cutting, and while the spacer is fitted into the slit, the tubular material is set in a recess of of a movable die and a fixed die of a bending machine and the movable die is moved along the curved outer circumferential part of the fixed die thereby the tubular material is bent with the spacer at inside.
REFERENCES:
patent: 5094096 (1992-03-01), Sheckells
patent: 5275031 (1994-01-01), Whiteside et al.
patent: 5339670 (1994-08-01), Granelli
patent: 5348213 (1994-09-01), Randlett et al.
patent: 5388329 (1995-02-01), Randlett et al.
Pubot Giken Co., Ltd.
Solis Erick R.
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