Body having fluid passages
AssigneeBucknell Engineering Ltd.
InventorRaymond A. Buckell
Life of this patent
Estimating the term…
Abstract
A machine manifold or body having fluid passages defined by relatively thin stainless-steel or other corrosion resistant tubular components embedded within a relatively thick molded plastics casing which serves to give the components strength to withstand the fluid pressures in the passages, and to permit a minimum of the expensive corrosion resistant material to be used. The passages may be formed by different tubular components located and preferably sealed together, or could be constituted by a single lost-wax casting of stainless-steel. Conveniently there is a rubbery layer between the thin metal passage defining components and the surrounding molded plastics casing.
Claims19
A motive fluid power device, such as a pump, internal combustion engine and the like, for handling corrosive working fluids and which has working fluid passages therein with inlets and outlets to and from the device, comprising:
- a plurality of relatively thin, abutting, corrosion resistant tubular components extending between the inlets and outlets, throughout the entire working fluid passages;
- a relatively thick casing of a solid plastics material cast around the relatively thin corrosion resistant tubular components, holding the tubular components in desired positional relationship and reinforcing the tubular components to withstand internal pressures;
- and
- a cushioning layer of material on the tubular components between the tubular components and plastics material casing for preventing damage to the casing caused by distortion of the tubular components upon load,
- whereby the corrosion resistant tubular components may be made with much thinner wall thickness than would otherwise be possible, and the use of separate fasteners for holding the components in assembled relationship is obviated, and further wherein the plastics material casing is protected from the corrosive working fluids.
A device for handling corrosive fluids, comprising a molded body of solid plastics material having fluid passages therein defined entirely by at least one relatively thin tubular corrosion-resistant component, which component is embedded in a surrounding, relatively thick casing of the solid plastics material molded in situ around the component, and a cushioning layer of material provided on the tubular component between the component and the plastics material casing for preventing damage to the casing caused by distortion of the tubular component upon load, whereby the casing holds the component in position and reinforces it, enabling the component to be made with much thinner wall thickness than would otherwise be possible.
A device for handling corrosive fluids, having fluid passages defined entirely by at least two relatively thin corrosion resistant tubular metal components sealed together in juxtaposed relationship to define the fluid passages, said components being held together and reinforced by being embedded in a relatively thick casing of a solid plastics material molded in situ around the components, and a cushioning layer of material provided on the tubular components between the components and the plastics material casing for preventing damage to the casing caused by distortion of the tubular components upon load, the corrosion resistant components thus being capable of being made with much thinner wall thickness than would otherwise be possible, and the use of separate mechanical fasteners for holding the components in assembled relationship being obviated.
Dependencies are inferred from the claim text.