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US 2003/0212153 A1Published application
Internally generated rotor set for low viscosity and abrasive metering applications
AssigneeSealed Air Corporation (US)
InventorsEdward H. Gervais, Souheil Eldanaf
Life of this patent
Estimating the term…
Abstract
An internal gear set comprising an inner rotor having a number of radially projecting cylindrical tooth members engaging a conjugate internally toothed outer rotor. The latter has one more tooth than there are tooth members on the inner rotor and is mounted eccentrically to the inner rotor so that the rotors move conjugately relative to one other.
Claims12
A rotary fluid displacement device for dispensing abrasive and/or low viscosity fluids comprising:
- a pump housing having a fluid inlet port and a fluid outlet port, the inlet port having an inlet line for contact with the abrasive and/or low viscosity fluid;
- a pump;
- and
- an internally generated rotor set located within the pump, wherein the internally generated rotor set comprises in combination:
- an inner rotor including a support having a predetermined number of fragmental cylindrical recesses equally spaced about its periphery and a rigid cylindrical tooth member received in each recess in rotational sliding contact therewith, each tooth member having substantially the same diameter as the corresponding recess, a portion of each tooth member projecting from the periphery, and
- an internally toothed outer rotor formed as the conjugate of the inner rotor, having simultaneous rolling engagement with all of the tooth members and having a number of teeth one greater than the predetermined number.
3 more elements
A rotary fluid displacement device for dispensing abrasive and/or low viscosity fluids comprising:
- a pump housing having a fluid inlet port and a fluid outlet port, the inlet port having an inlet line for contact with the abrasive and/or low viscosity fluid;
- a pump;
- and
- an internally generated rotor set located within the pump, wherein the internally generated rotor set comprises in combination:
- an inner rotor including a support having a first axis therein, the support having a predetermined number of fragmental cylindrical recesses about its periphery, the recesses being equally spaced radially from and angularly about said axis, and a rigid cylindrical tooth member received in each recess in rotational sliding contact therewith, each tooth member projecting from the periphery, and
- an internally toothed outer rotor formed as the conjugate of the inner rotor, having simultaneous rolling engagement with all of the tooth members, and having a number of teeth one greater than the predetermined number and equally spaced radially from and angularly about a second axis parallel to the first and spaced therefrom.
3 more elements
A method of transferring abrasive and/or low viscosity fluid comprising:
- pumping the abrasive and/or low viscosity fluid, wherein the pumping action is effectuated by using an internally generated rotor set which comprises in combination:
- an inner rotor including a support having a predetermined number of fragmental cylindrical recesses equally spaced about its periphery and a rigid cylindrical tooth member received in each recess in rotational sliding contact therewith, each tooth member having substantially the same diameter as the corresponding recess, a portion of each tooth member projecting from the periphery, and
- an internally toothed outer rotor formed as the conjugate of the inner rotor, having simultaneous rolling engagement with all of the tooth members and having a number of teeth one greater than the predetermined number.
A method of making a two-part polyurethane foam comprising the steps of:
- pumping an isocyanate fluid through a first pump;
- pumping a polyol fluid through a second pump;
- and
- mixing the isocyanate fluid and polyol fluid after the fluids exit the first and second pumps to form a two-part polyurethane foam,
- wherein the first and second pumping actions are effectuated by using an internally generated rotor set which comprises in combination:
- an inner rotor including a support having a predetermined number of fragmental cylindrical recesses equally spaced about its periphery and a rigid cylindrical tooth member received in each recess in rotational sliding contact therewith, each tooth member having substantially the same diameter as the corresponding recess, a portion of each tooth member projecting from the periphery, and
- an internally toothed outer rotor formed as the conjugate of the inner rotor, having simultaneous rolling engagement with all of the tooth members and having a number of teeth one greater than the predetermined number.
4 more elements
Dependencies are inferred from the claim text.