Linear guiding device

{
  "publication_number": "US5584581A",
  "country": "US",
  "kind": "A",
  "title": "Linear guiding device",
  "abstract": "A main body of a bearing (12) is guided on a guide rail (10) by at least one rolling-element circuit (14, 16) and receives at one end an end plate (13). A deflection duct (50, 52) is recessed in the end plate and receives a deflection piece (60), which crosses the deflection duct (50, 52). A lubricant-supply system (86) for the rolling-element circuit (14, 16) is provided inside the end plate (13). The lubricant-supply system (86) is partly within a deflection-piece receiver duct (58) which accommodates the deflection piece (60). The lubricant-supply system (86) includes a lubricant channel (92) which runs entirely within the end plate (13) so that it is encapsulated completely by the material of the end plate (13).",
  "claims": [
    "1. A linear guiding device, comprising a guide rail having a longitudinal axis, a main body of a bearing having at least one rolling-element circuit guiding the main body along the axis on the guide rail and having an end surface, an end plate attached to the end surface of the main body of the bearing, the end plate having a contact surface facing the end surface of the main body of the bearing, a deflection duct for the rolling-element circuit recessed into the contact surface of the end plate and constituting an outer deflecting surface for a deflection-arc segment of the rolling-element circuit, a deflection-piece receiver duct recessed into the contact surface of the end piece and arranged crosswise of the defection duct, a deflection piece received in the deflection-piece receiver duct and extending across the deflection duct, the deflection piece having a breast surface facing and located proximate to the end surface of the main body of the bearing and a convex back-surface located opposite the outer deflecting surface and forming an inner deflecting-surface for the deflection-arc segment, at least a part of a lubricant-supply system for the rolling-element circuit being accommodated in the end plate, at least a portion of said part of the lubricant supply system which is close to the deflection duct for the rolling-element circuit being formed in the deflection piece, said portion including an outlet opening communicating with the deflection duct, a chamber upstream from the outlet opening relative to the direction of flow of lubricant in the lubricant supply system, a first throttling device upstream from the chamber relative to the direction of flow of lubricant in the lubricant supply system, and a second throttling device between the chamber and the outlet opening.",
    "2. A linear guiding device according to claim 1 wherein the first throttling device comprises one of a throttle point, a one-way check valve and an excess-pressure valve.",
    "3. A linear guiding device according to claim 1 wherein the second throttling device comprises one of a throttle point, a one-way check valve and an excess-pressure valve.",
    "4. A linear guiding device according to claim 3 wherein the chamber is defined by a wall of a recess in the deflection piece and by a surface of the deflection-piece receiver duct engaged by the deflection piece.",
    "5. A linear guiding device according to claim 1 wherein the chamber includes a wall portion that partly defines the outlet opening.",
    "6. A linear guiding device according to claim 5 wherein the chamber is a valve chamber and the wall portion that partly defines the outlet opening is a deflectable diaphragm forming an excess-pressure valve.",
    "7. A linear guiding device according to claim 1 wherein the chamber is a valve chamber located proximate to the outlet opening and the second throttling device is an excess-pressure valve.",
    "8. A linear guiding device according to claim 7 wherein the first throttling device is a throttle point.",
    "9. A linear guiding device according to claim 7 wherein the deflection piece includes a body portion received in the deflection-piece receiver duct and a plate portion received in a shallow recess in the end plate adjacent the deflection-piece receiver duct, and the lubricant supply system includes a duct defined by a recess in the bottom of the shallow recess that is covered in sealed relation by the plate portion of the deflection piece.",
    "10. A linear guiding device according to claim 9 wherein the lubricant supply system includes a passage within the deflection piece opening to the duct at an upstream end and to the valve chamber at a downstream end.",
    "11. A linear guiding device according to claim 10 wherein the first throttling device comprises one of a throttle point, a one-way check valve and an excess-pressure valve.",
    "12. A linear guiding device according to claim 11 wherein the first throttling device is a throttle point located at a juncture between the passage and the valve chamber.",
    "13. A linear guiding device according to claim 10 wherein the second throttling device comprises one of a throttle point, a one-way check valve and an excess-pressure valve.",
    "14. A linear guiding device according to claim 13 wherein the second throttling device is an excess-pressure valve.",
    "15. A linear guiding device according to claim 14 wherein the excess-pressure valve is a deflectable diaphragm integrally attached to the deflection piece and forming part of a wall of the valve chamber and adapted to form an opening between the valve chamber and the deflection duct when the pressure of a lubricant in the discharge chamber exceeds the pressure of a lubricant in the deflection duct."
  ],
  "description_excerpt": "This application is a continuation-in-part of U.S. patent application Ser. No. 08/302,119, filed Sep. 7, 1994.\n\nThe invention relates to a linear guiding device of the type having a guide rail with a longitudinal axis and a main body of a bearing that is guided by rolling-element circuits along the guide rail. An end plate is attached to at least one end surface of the main body of the bearing, the end plate having a contact surface facing one of the end surfaces of the main body of the bearing. A deflection duct, which is recessed into the contact surface of the end plate, is provided for at least one rolling-element circuit, the defection duct constituting an outer deflecting surface for a deflection-arc segment of the rolling-element circuit. A receiver duct, which is also recessed into the contact surface, receives a deflection piece. The receiver duct crosses the deflection duct, in order that the deflection piece may also cross the deflection duct. The deflection piece faces, with a breast surface located near the end surface, the end surface of the main body of the bearing, and the deflection piece has in addition a convex back surface located opposite the outer deflecting surface, the back surface forming for the deflection-arc segment an inner deflecting surface located opposite the outer deflecting surface.",
  "cpc": [
    "F16C 29/0645",
    "F16C 29/0607",
    "F16C 29/0609",
    "F16C 33/6659"
  ],
  "ipc": [
    "F16C 29/06",
    "F16C 29/08",
    "F16C 33/66"
  ],
  "assignees": [
    "Deutsche Star GmbH"
  ],
  "inventors": [
    "Werner Keller",
    "German D utsch",
    "Roland Hartmann"
  ],
  "filing_date": "1996-02-21",
  "publication_date": "1996-12-17",
  "grant_date": "1996-12-17",
  "priority_date": "1993-09-10",
  "application_number": "US-60443196-A",
  "family_id": "25929420",
  "cited_by_count": 23,
  "citations": [
    "EP0120093A1",
    "EP0211243A2",
    "US4743124A",
    "US4850720A",
    "US4921358A",
    "US4988215A",
    "JPH03121310A",
    "US5137371A",
    "US5139347A",
    "DE4210142A1",
    "DE4141038A1",
    "WO1993012351A1",
    "DE4210299A1",
    "US5445455A",
    "DE4424795A1"
  ]
}