US 2025/0129778 A1Published application

Rotary positive displacement device

AssigneeSpherical Rotors Inc.

InventorMichael Justin Sereda-Mohr

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Abstract

A rotary positive displacement device comprises a housing having low and high pressure ports; first and second complementary members each having an outer surface, an axial surface and a shaft. The axial surfaces intermesh to form at least two chambers therebetween having a variable volume as each chamber orbits about a rotational axis of the first member. At least one repositionable gate comprising an aperture is selectively aligned with the high or low pressure ports to form at least one of an adjustable high pressure or low pressure opening. The high or low pressure opening extends between the first and second members and the corresponding high or low pressure port. A lower edge of the high pressure opening is positioned along an outer diameter of the outer surface of the second rotor and between the first rotor shaft and the second rotor shaft.

Claims24

Dependent claims

A rotary positive displacement device, comprising:

a housing having a low pressure port and a high pressure port;
first and second complementary members, wherein the first complementary member is a first rotor, the first rotor comprising a first body connected to a first shaft that is rotatable about a first rotational axis, the first body comprising an outer surface and an axial surface, the second complementary member comprising a second body connected to a second shaft, the second body comprising an outer surface and an axial surface, and
at least one repositionable gate comprising a sealing surface and an aperture, the aperture of the repositionable gate being selectively aligned with one of the high pressure port or the low pressure port of the housing to comprise at least one of an adjustable high pressure opening and an adjustable low pressure opening between the first and second bodies and the high pressure or low pressure port, and
wherein the axial surfaces of the first and second bodies intermesh with one another to form at least two chambers therebetween when at least the first rotor is rotating via the first shaft, each chamber of the at least two chambers having a variable volume as each chamber orbits around the first rotational axis, and
wherein the at least one of the adjustable high pressure opening and adjustable low pressure opening is configured to selectively communicate with one or more of the at least two chambers as the at least two chambers orbit around the first rotational axis.

2 more elements

A rotary positive displacement device, comprising:

a housing having a low pressure port and a high pressure port;
a first complementary member having a first body connected to a first shaft that is rotatable about a first rotational axis, the first body having a frusto-spherical outer surface, a frusto-spherical inner surface and an axial surface extending therebetween, wherein the axial surface comprises at least one teardrop surface and at least one engagement surface, the at least one teardrop surface further comprising a radially extending groove extending from the frusto-spherical inner surface to the frusto-spherical outer surface of the first body, the at least one teardrop surface and at least one engagement surface together defining at least one lobe and a corresponding valley, each lobe of the at least one lobe having a lobe tip,
a second complementary member having a second body connected to a second shaft that is rotatable about a second rotational axis, the second body having a frusto-spherical outer surface and an axial surface, wherein the axial surface comprises at least one teardrop surface and at least one engagement surface, the at least one teardrop surface and at least one engagement surface together defining at least one lobe and a corresponding valley, each lobe of the at least one lobe having a lobe tip, the second rotational axis intersecting with the first rotational axis;
the axial surface of each of the first and second bodies intermeshing with one another to form at least two chambers therebetween, the at least two chambers selectively separated by the axial surfaces of the first and second bodies, each chamber of the at least two chambers having a variable volume as the first and second bodies rotate about their respective rotational axes;
and
a high pressure opening extending between the first and second bodies and the high pressure port of the housing;
a low pressure opening extending between the first and second bodies and the low pressure port of the housing, wherein the low pressure opening is configured to selectively communicate with one or more chambers of the at least two chambers;
wherein the lobe tip of the first body is in contact with, so as to form a seal against, the corresponding teardrop surface of the second body;
and
wherein the lobe tip of the second body is selectively in contact with, so as to selectively form a seal against, the corresponding teardrop surface of the first body;
and
wherein the engagement surface of each body of the first and second bodies is in contact with, so as to form a seal against, the corresponding engagement surface of the other body;
and
wherein the high pressure opening comprises a lower edge, the lower edge positioned along an outer diameter of the frusto-spherical outer surface of the first body, wherein the lower edge is positioned between the first rotor shaft and the second rotor shaft.

11 more elements

A rotary positive displacement device, comprising:

a housing having a low pressure port and a high pressure port;
a first rotor comprising a first rotor body connected to a first rotor shaft that is rotatable about a first rotational axis passing through the first rotor shaft, the first rotor body having an outer surface and an axial surface;
a second rotor comprising a second rotor body connected to a second rotor shaft that is rotatable about a second rotational axis passing through the second rotor shaft, the second rotor body having an outer surface and an axial surface;
wherein the axial surface of each of the first and second rotor bodies comprises at least one offset advanced involute curve;
and
wherein the axial surfaces of the first and second rotor bodies intermesh to form at least two chambers therebetween the first and second rotor bodies, the at least two chambers orbiting about the first rotational axis and each chamber of the at least two chambers has a variable volume as the first and second rotors rotate about their respective rotational axes;
and
a low pressure opening extending between an outer diameter of the first rotor and the low pressure port of the housing, wherein the low pressure opening is configured to selectively communicate with one or more chambers of the at least two chambers;
a high pressure opening extending between an outer diameter of the first rotor and the high pressure port of the housing, wherein the high pressure opening is configured to selectively communicate with one or more chambers of the at least two chambers;
wherein the high and low pressure openings are each configured to selectively communicate with each other via at least one chamber of the at least two chambers.

7 more elements

A rotary positive displacement device, comprising:

a housing having a low pressure port and a high pressure port;
a first rotor comprising a first body having a frusto-spherical outer surface and an axial surface, a first rotor shaft that is rotatable about a first rotational axis passing through the first rotor shaft;
a second rotor comprising a second body having a frusto-spherical outer surface and an axial surface, a second rotor shaft that is rotatable about a second rotational axis passing through the second rotor shaft;
wherein each axial surface of the first and second bodies comprises a multiple of two teardrop surfaces and a multiple of a corresponding two involute surfaces, wherein each teardrop surface and corresponding involute surface together defines a lobe and a corresponding valley, and wherein the axial surface of the first body intermeshes with the axial surface of the second body to form at least three chambers therebetween, each chamber of the at least three chambers separated from the other chambers by the axial surfaces of the first and second bodies and each chamber having a variable volume and a working fluid of a variable pressure contained within the variable volume as the first and second bodies rotate about their respective rotational axes;
and
a high pressure opening extending between the first and second bodies and the high pressure port of the housing;
and
a low pressure opening extending between the first and second bodies and the low pressure port of the housing, wherein the low pressure opening is configured to selectively communicate with one or more chambers of the at least three chambers;
and
wherein the high pressure opening comprises a lower edge, the lower edge positioned along an outer diameter of the frusto-spherical outer surface of the first body, wherein the lower edge is positioned between the first rotor shaft and the second rotor shaft;
and
wherein at any rotational position of the second rotor rotating about the second rotational axis, the variable pressure in each chamber of the at least three chambers acts to bias the second rotor in a first rotational direction with approximately the same force as the variable pressure in each chamber of the at least three chambers acts to bias the second rotor in a second rotational direction, opposite of the first rotational direction.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/000,182Filed 23 Dec 2024
Priority: 15 May 2023
Published: 24 Apr 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F01C 3/08
The axes being arranged otherwise than at an angle of 90 degrees: of intermeshing-engagement type, i.e. with engagement of co-operating members…
F01C 1/084
Details specially related to intermeshing engagement type machines or engines: toothed wheels
F01C 21/08
Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00: rotary pistons
F01C 21/18
Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00: arrangements for admission or discharge of the working…

Family

Application63/502,302Us provisional application · filed 15 May 2023
Application18/478,563Continuation in part · filed 29 Sep 2023
Application19/000,182Continuation in part
US 12,180,960 B2Related patent
US 2024/0384720 A1Published application
US 2025/0129778 A1This patent

From the US filing history. Foreign family members aren’t listed.