Low speed, high torque rotary abutment motor

{
  "publication_number": "US2005281698A1",
  "country": "US",
  "kind": "A1",
  "title": "Low speed, high torque rotary abutment motor",
  "abstract": "An improved low speed, high torque rotary abutment motor is provided that is capable of producing ultra high pressures, while still remaining light weight an reliably efficient.",
  "claims": [
    "1. A rotary abutment type hydraulic motor comprising: a housing formed of a housing top and a housing bottom that serves to contain the fluid and moving parts of the motor; an annular fluid passage formed within said housing, said fluid passage located surrounding the outer circumference of a drive shaft; a first port and a second port formed by said housing and in fluid communications with said annular fluid passage; a drive shaft rotatably mounted centrally within said housing; a rotor, rotatably mounted within said fluid passage and having a first rotor vane radially extended outward from said drive shaft and symmetric to a second rotor vane; and at least one rotary abutment that rotates in an overlapping concentric fashion over the path of each rotor vane such that during impingement between said rotor vane and said second rotary abutment, said entire rotary abutment will rotate in a pressure sealed manner; wherein said first rotor vane and said second rotor vane form the main operative valve for said motor.",
    "2. The hydraulic motor of claim 1, wherein said rotary abutment further comprises: a first wing rotatably mounted to an abutment stator that is pivotally affixed about a central wing shaft within the rotary abutment that seals said fluid passage behind said rotary vane; and means to equilibrate the pressure about said abutment, thereby forcing said abutment stator to its returned position.",
    "3. The hydraulic motor of claim 2, further comprising an urging spring to communicate a return force to said wing.",
    "4. The hydraulic motor of claim 2, further comprising a second wing similar to said first wing and mounted symmetrically opposite thereto on said stator such as to allow said hydraulic motor to function in a reverse fashion.",
    "5. The hydraulic motor of claim 1, wherein each said rotor vane is formed of a pair of vane members mated together firmly about a wing seal, wherein said wing seal forms a seal between said rotor vane and the interior surface of the housing that forms the fluid passage.",
    "6. The hydraulic motor of claim 1, further comprising a shaft seal forming a face seal between the outer surface of the shaft and said vane such as to provide increased pressure sealing within said fluid passage.",
    "7. In a rotary abutment type hydraulic motor having a housing formed of a housing top and a housing bottom that serves to contain the fluid and moving parts of the motor, an annular fluid passage formed within said housing located surrounding the outer circumference of a drive shaft, a first port and a second port formed by said housing and in fluid communications with said annular fluid passage, and a drive shaft rotatably mounted centrally within said housing, wherein the improvement comprises: a rotor, rotatably mounted within said fluid passage and having a first rotor vane radially extended outward from said drive shaft and symmetric to a second rotor vane.",
    "8. In the rotary abutment type hydraulic motor of claim 7, wherein the improvement further comprises at least one rotary abutment that rotates in an overlapping concentric fashion over the path of each rotor vane.",
    "9. In the rotary abutment type hydraulic motor of claim 8, wherein during impingement between said rotor vane and said second rotary abutment, said entire rotary abutment will rotate in a pressure sealed manner; wherein said first rotor vane and said second rotor vane form the main operative valve for said motor.",
    "10. In the rotary abutment type hydraulic motor of claim 7, wherein the improvement further comprises said rotary abutment having: a first wing rotatably mounted to an abutment stator that is pivotally affixed about a central wing shaft within the rotary abutment that seals said fluid passage behind said rotary vane; and means to equilibrate the pressure about said abutment, thereby forcing said abutment stator to its returned position.",
    "11. In the rotary abutment type hydraulic motor of claim 7, wherein the improvement further comprises each said rotor vane is formed of a pair of vane members mated together firmly about a wing seal, wherein said wing seal forms a seal between said rotor vane and the interior surface of the housing that forms the fluid passage.",
    "12. the rotary abutment type hydraulic motor of claim 7, wherein the improvement further comprises a shaft seal forming a face seal between the outer surface of the shaft and said vane such as to provide increased pressure sealing within said fluid passage."
  ],
  "description_excerpt": "There are no previously filed, nor currently any co-pending applications, anywhere in the world.\n\n1. Field of the Invention\n\nThe present invention relates generally to hydraulic motors and, more particularly, to a low speed, high torque hydraulic motor.\n\n2. Description of the Related Art\n\nHydraulic motors are actuators (like hydraulic cylinders) that simply convert hydraulic pressure into rotary movement. Even though the construction is similar motors differ from pumps in that they are ““pushed”” into rotation by the already active fluid. A hydraulic motor converts hydraulic energy into rotating motion by being pushed by hydraulic fluid. A hydraulic motor is rated by displacement, torque, speed and pressure limits. Further, they are classified as HSLT (High speed/Low torque), LSHT (Low speed/High torque) or Limited Rotation (Torque Actuators). Typical hydraulic motors (actually called a rotary hydraulic actuator) use some form of surface area to receive hydraulic fluid, which cause a shaft to spin, which is connected to various equipment driven by that hydraulic motor. The surface that is ““pushed”” may be rectangular in nature, as in gear, vane and rotary abutment motors, or circular in nature as in rotary and axial piston motors.\n\nHowever, nowhere in the art is there a teaching that is adaptable to a low speed, high torque hydraulic motor that is capable of producing ultra high pressures, while still remaining light weight an reliably efficient.",
  "cpc": [
    "F04C 14/04",
    "F03C 2/08",
    "F04C 15/0011"
  ],
  "ipc": [
    "F01C 1/00",
    "F03C 2/08",
    "F04C 14/04",
    "F04C 15/00",
    "F04C 18/00",
    "F04C 2/00"
  ],
  "assignees": [
    "5iTech LLC"
  ],
  "inventors": [
    "Yan Satanovskiy"
  ],
  "filing_date": "2004-06-21",
  "publication_date": "2005-12-22",
  "priority_date": "2004-06-21",
  "application_number": "US-87163204-A",
  "family_id": "35480766",
  "cited_by_count": 3,
  "citations": [
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  ]
}