Expansible chamber devices – Fluid conduit or port in fixed wall of working chamber
Reexamination Certificate
2005-03-10
2008-07-29
Leslie, Michael (Department: 3745)
Expansible chamber devices
Fluid conduit or port in fixed wall of working chamber
C092S169100
Reexamination Certificate
active
07404353
ABSTRACT:
A pneumatic cylinder designed to convert compressed air into mechanical output is disclosed. The pneumatic cylinder includes a piston and rod assembly with supporting components coaxially disposed and arranged to achieve a linear mechanical force in accordance with a differential pressure across the piston. A cylindrical sleeve, secured to end caps on both openings, encircles the piston and rod assembly and helps guide the piston during travel. Additionally, a manifold, which serves as a conduit for airflow between each individual cylinder volume and an external air control device, is disposed such that the cylindrical sleeve and end caps are nested, in a concentric manner, within the manifold. This arrangement results in a dynamic relationship between airflow and differential pressure that is conducive to precision force and motion control.
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Bell Boyd & Lloyd LLP
Leslie Michael
Sunstream Scientific, Inc.
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