Sectional rod bearing for fussball game structure

{
  "publication_number": "US5072880A",
  "country": "US",
  "kind": "A",
  "title": "Sectional rod bearing for fussball game structure",
  "abstract": "An improved bearing structure for a rod which permits both rotational and axial movement of the rod in conjunction with longitudinal bending thereof. Two semi-cylindrical pieces are assembled along an axial line of separation. A first cylindrical bearing half engages a second cylindrical bearing half integrally formed for matingly receiving the first half. The two halves of the bearing each include an outer, radially extending flange and are each passed through opposite sides of an aperture in a wall and are assembled into a complete bearing by threadably engaging one another within the wall aperture. The rod to be journaled is inserted through an axial opening formed through the bearing. Each semi-cylindrical bearing half is constructed with an expansion slot formed in an outer mounting flange for facilitating the flexure thereof during installation to prevent binding of the actuation rod therein.",
  "claims": [
    "1. An improved table soccer or fussball game structure of the type having a playing field portion surrounded by raised opposite side walls and raised end walls wherein a plurality of actuating rods extend through apertures in said opposite side walls and are spaced transversely of and above said playing field portion, said rods supporting game figures thereon which depend adjacent said playing field portion to contact a ball disposed thereon, said actuating rods being rotatively and axially movable relative to said side walls, and wherein the improvement includes a rod bearing mounting in each aperture in said side walls, said bearing comprising: a first bearing half having an outer sleeve portion snugly received into one of the apertures in the table wall, said sleeve portion having an inner threaded cylindrical wall for receiving a second bearing half, and a radially extending first flange for engaging the outer side wall surface adjacent the wall aperture, said first flange including a circular clearance aperture for receiving an actuating rod coaxially through said first bearing half; a second bearing half having an outer cylindrical threaded portion for engaging the threaded inner wall of the first bearing half, an outer sleeve portion received into one of the apertures in the table wall and separated from the threaded portion by a stepped region, and a radially extending second flange for engaging the inner side wall surface adjacent the wall aperture, said second flange having an integral, concentric aperture extending therethrough for receiving an actuating rod coaxially through said second bearing half, said second bearing half being separable along opposed axial parting lines into two identical halves; and said second flange further including first and second axially extending slot portions, formed only through radially outer portions thereof, for permitting the flexing thereof relative to the concentric aperture therein to facilitate the mounting thereof, and the operative tightening of said second bearing half to said first bearing half within said one of the apertures in the table wall, without transmitting an appreciable amount of tightening distortion force to the periphery of said concentric aperture of said second bearing half.",
    "2. The improved game structure as set forth in claim 1 wherein the identical halves of said second bearing half include cooperative, interengageable alignment means thereon for operatively aligning said identical halves and holding the threaded portions thereof in operative registry during engagement with the first bearing half.",
    "3. The game structure as set forth in claim 1 wherein the circular clearance aperture in the flange of the first bearing half is sized to abuttingly engage the rod upon transverse flexure of the outer end of the rod to its elastic limit and support the rod against plastic deformation.",
    "4. The game structure as set forth in claim 1 wherein the outer sleeve portions of both bearing halves are cylindrical for reception into circular apertures in the game table walls.",
    "5. The game structure as set forth in claim 1 wherein said identical halves of said second bearing half have integral facing portions which combinatively define an integral bearing ring having a circular interior side surface adapted to engage and slidably support a longitudinal portion of an actuating rod.",
    "6. The game structure as set forth in claim 1 wherein said second flange has formed thereon an axially inwardly directed projection adapted to be received in an opening in the inner side wall surface and operative to inhibit rotation of said second flange relative to said side wall.",
    "7. An improved molded plastic bearing structure insertable into a side wall opening of a table soccer or fussball game structure and operative to slidably support an actuating rod, coaxially extending through said side wall opening, for axial and rotational movement relative to the side wall, said improved molded plastic bearing structure comprising: first and second hollow cylindrical sections axially insertable into said side wall opening, from opposite sides thereof, and being threadingly engageable with one another, each of said sections having a body portion snugly receivable within said side wall opening, and an outer end flange abuttable with a side surface of the wall when said first and second sections are threadingly tightened to one another within said side wall opening, said first section being formed from two separable radial halves which combinatively define, along an interior surface portion of said first section longitudinally adjacent said body portion and outer end flange thereof, an integral circular rod-engaging surface for slidably contacting and supporting a longitudinal portion of said actuating rod, said outer end flange and body portion of said first section, due to molding distortion therein, being subjectable to unevenly distributed exterior surface wall contact forces when said first and second sections are operatively tightened together within said side wall opening; and stress relieving means, formed on only a radially outer portion of said first section positioned radially outwardly of said circular rod-engaging surface, for isolating said circular rod-engaging surface from unevenly distributed wall contact forces to preserve the circularity of said rod-engaging surface and maintain it in a precisely concentric relationship with said side wall opening.",
    "8. The improved molded plastic bearing structure of claim 7 wherein: said first section is threadable into said second section.",
    "9. The improved molded plastic bearing structure of claim 7 wherein: said first section is hollow and generally bolt-shaped, and said second section is generally nut-shaped.",
    "10. The improved molded plastic bearing structure of claim 7 further comprising: at least one axial projection formed on said outer end flange of said first section and receivable in a corresponding opening in said side wall to inhibit rotation of said first section relative to said side wall.",
    "11. The improved molded plastic bearing structure of claim 7 further comprising: cooperatively interengageable alignment means formed on said radial halves of said first section for releasably holding them in an operatively aligned relationship.",
    "12. The improved molded plastic bearing structure of claim 7 wherein: said outer end flange of said second section has a central opening therein, the surface of which outwardly circumscribes the bearing-installed actuating rod and acts as a transverse abutment therefor in response to a transverse deflection of the actuating rod.",
    "13. The improved molded plastic bearing structure of claim 7 wherein said stress relieving means include: radially inwardly extending slot means formed in said outer end flange of said first section and operative to permit flexure thereof during tightening together of said first and second sections within said side wall opening.",
    "14. The improved molded plastic bearing structure of claim 13 wherein: said slot means extend axially across an external side surface portion of said body portion of said first section.",
    "15. The improved molded plastic bearing structure of claim 7 further comprising: a circumferentially spaced series of relatively deep exterior surface depressions formed on said body portion of said first section.",
    "16. An improved molded plastic bearing structure insertable into a side wall opening of a table soccer or fussball game structure and operative to slidably support an actuating rod, coaxially extending through said side wall opening, for axial and rotational movement relative to the side wall, said improved molded plastic bearing structure comprising: first and second hollow cylindrical sections axially insertable into said side wall opening, from opposite sides thereof, and being threadingly engageable with one another, each of said sections having a body portion snugly receivable within said side wall opening, and an outer end flange abuttable with a side surface of the wall when said first and second sections are threadingly tightened to one another within said wall opening. said first section being formed from two separable radial halves which combinatively define, along an interior surface portion of said first section longitudinally adjacent said body portion and outer end flange thereof, an integral circular rod-engaging surface for slidably contacting and supporting a longitudinal portion of said actuating rod, said outer end flange and body portion of said first section, due to molding distortion therein, being subjectable to unevenly distributed exterior surface wall contact forces when said first and second sections are operatively tightened together within said side wall opening; and stress relieving means, formed on a radially outer portion of said first section, for isolating said circular rod-engaging surface from unevenly distributed wall contact forces to preserve the circularity of aid rod-engaging surface and maintain it in a precisely concentric relationship with said side wall opening, said stress relieving means including: radially inwardly extending slot means formed in said outer end flange of said first section and operative to permit flexure thereof during tightening together of said first and second sections within said side wall opening, said slot means including a diametrically opposed pair of slots extending radially inwardly through the outer edge periphery of said outer end flange of said first section.",
    "17. The improved molded plastic bearing structure of claim 16 wherein: said opposed pair of slots axially extend across diametrically opposite exterior surface portions of said body portion of said first section.",
    "18. The improved molded plastic bearing structure of claim 17 wherein: said radial halves of said first section meet along a surface area lying generally in a first plane, and said diametrically opposed pair of slots are disposed in a second plane generally perpendicular to said plane."
  ],
  "description_excerpt": "1. Field of the Invention\n\nThe invention relates to improved rod bearings, and, more particularly, to an improved, sectional rod bearing for journaling a playing figure actuation rod in a fussball game table.\n\n2. History of the Prior Art\n\nThis invention is directed to a bearing member for a fussball (also known as table soccer) game table generally of the type shown in U.S. Pat. No. 3,926,432. Typically, fussball game tables include a rectangular, box-like playing area supported on four legs. A plurality of axially slidable and rotatable rods are mounted on bearings and extend transversely of the playing area. The actuation rods each mount a plurality of playing figures which are arranged above the playing surface of the table in preselected formations. A light ball is placed on the playing surface and propelled by sharply rotating the actuating rods within their respective bearings, so that the foot of the playing figure strikes the ball and propels it along the playing surface toward one of the two goals located at opposite end walls of the table.\n\nThe rod bearings on prior art fussball tables are generally the most difficult portions of the table to service and maintain. In operation in a vending machine environment, the playing figure actuation rods gather dust from the environment and dirt and other soil from handling during operation. Because the actuation rods are continually being rapidly moved in an axial manner back and forth within the rod bearings dirt, debris and other matter deposited on the rods is scraped therefrom by the edges of the bearings.",
  "cpc": [
    "A63F 7/0672"
  ],
  "ipc": [
    "A63F 7/06"
  ],
  "inventors": [
    "Calvin E. McCloud"
  ],
  "filing_date": "1990-12-27",
  "publication_date": "1991-12-17",
  "grant_date": "1991-12-17",
  "priority_date": "1990-12-27",
  "application_number": "US-63439290-A",
  "family_id": "24543586",
  "cited_by_count": 29,
  "citations": [
    "US2675283A",
    "FR1012694A",
    "FR1032209A",
    "FR1036018A",
    "US2832596A",
    "CH356393A",
    "CH424582A",
    "FR2230164A5",
    "US4382598A",
    "US4780019A"
  ]
}