Pump housing with an interior for accommodating a pump rotor
AssigneeEcp Entwicklungsgesellschaft Mbh
InventorsLars Bredenbreuker, Joerg Schumacher
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Abstract
In a pump housing having an interior for accommodating a pump rotor, which may be transferred from a radially compressed state into a radially expanded state, and comprises a housing skin revolving in circumferential direction, as well as at least one reinforcement element, a stretch-resistant element revolving in circumferential direction is provided, which is stretched less than 5% in the expanded state as opposed to the force-free state in circumferential direction, and which limits any further expansion of the pump housing in radial direction.
Claims20
A pump housing having an interior for accommodating a compressible and an expandable pump rotor, the housing comprising;
- a stretch-resistant, radially compressible and expandable housing skin revolving in a circumferential direction, the housing skin formed of a stretch-resistant material which is configured to stretch less than 5% when the housing skin is fully expanded compared to when the housing skin is in an unstressed state, wherein the housing skin limits expansion of the housing;
- at least one reinforcement, the at least one reinforcement being configured to expand in the circumferential direction with expansion of the housing skin;
- and
- a ring revolving in the circumferential direction of the housing and surrounding the at least one reinforcement at least in sections.
A pump housing having an interior for accommodating a compressible and an expandable pump rotor, the housing comprising;
- a stretch-resistant, radially compressible and expandable housing skin revolving in a circumferential direction, the housing skin formed of a stretch-resistant material which is configured to stretch less than 5% when the housing skin is fully expanded compared to when the housing skin is in an unstressed state, wherein the housing skin limits expansion of the housing;
- and
- at least one reinforcement, the at least one reinforcement being configured to expand in the circumferential direction with expansion of the housing skin;
- wherein the stretch-resistant material comprises stretch-resistant fibers extending in the circumferential direction.
Dependencies are inferred from the claim text.