Shaft quick hitch

{
  "publication_number": "US5308092A",
  "country": "US",
  "kind": "A",
  "title": "Shaft quick hitch",
  "abstract": "Hitch for securing a racing sulky to a harness or saddle of a horse. The hitch has an elongated, generally cylindrical body which includes a frustoconical tapered front portion, a generally cylindrical mid-portion and a cylindrical rear portion of slightly smaller diameter than that of the mid-portion so as to form a shoulder. The rear portion is adapted to be inserted into the open end of a tubular shaft, such as a shaft of a racing sulky. When so inserted, the hitch may be permanently secured to the shaft. The mid-portion of the hitch includes cylindrical front and rear end members which adjoin the front portion and the rear portion respectively of the hitch. The mid-portion of the hitch has one or more cutouts which define a longitudinally extending rigid strut and (when there is more than one such cutout) one or more transverse spacer discs, which are spaced from the end members and from each other. A rigid rod extends through the rear portion and the mid-portion of the hitch. The strut and the rigid rod (and the spacer discs when present) together define one or more slotted openings for receiving a strap or the like which is associated with a harness or saddle. Preferably the entire hitch except for the rigid rod is formed from a single piece of material; the rigid rod may be formed from a second piece of material and joined to the remaining structure. Either metal (such as steel or aluminum) or rigid plastic can be used for forming the hitch.",
  "claims": [
    "1. A hitch for insertion into a tubular end of a shaft, said hitch comprising a tapered front portion, a mid-portion and a cylindrical rear portion, the cylindrical rear portion of the hitch being adapted to be received in an open ended tubular end portion of a shaft, said mid-portion including first and second spaced longitudinally extending rigid members which together form longitudinally extending opening means therebetween for receiving an attaching member associated with a harness or saddle.",
    "2. A hitch according to claim 1 wherein (1) said mid-portion is generally cylindrical and of slightly larger diameter of said rear portion so as to form a shoulder for positioning said hitch in the forward end of the shaft; (2) said mid-portion includes first and second end members which adjoins said front and rear portions, respectively; (3) said first longitudinally extending rigid member extends between said first and second end members and is defined by at least one cutout in said mid-portion; (4) said front portion, said rear portion, said end members and said first longitudinally extending rigid member are of one piece integral construction, and (5) said second longitudinally extending rigid member is a rod extending from said front portion to said rear portion and is joined thereto.",
    "3. A hitch according to claim 2 wherein said mid-portion further includes at least one transverse spacer disc which is spaced from said end members.",
    "4. A hitch according to claim 3 wherein said mid-portion includes at least two transverse spacer discs which are spaced from said end members and from each other.",
    "5. A hitch according to claim 3 wherein said first and second end members and said at least one transverse spacer disc are coaxial, of circular cross-sectional shape, and of the same diameter.",
    "6. A racing sulky according to claim 1 wherein (1) said mid-portion is generally cylindrical and of slightly larger diameter of said rear portion so as to form a shoulder for positioning said hitch in the forward end of the shaft; (2) said mid-portion includes first and second end members which adjoins said front and rear portions, respectively; (3) said first longitudinally extending rigid member extends between said first and second end members and is defined by at least one cutout in said mid-portion; (4) said front portion, said rear portion, said end members and said first longitudinally extending rigid member are of one piece integral construction, and (5) said second longitudinally extending rigid member is a rod extending from said front portion to said rear portion and is joined thereto.",
    "7. A racing sulky according to claim 6 wherein said mid-portion further includes at least one transverse spacer disc which is spaced from said end members.",
    "8. A racing sulky according to claim 7 wherein said mid-portion includes at least two transverse spacer discs which are spaced from said end members and from each other.",
    "9. A racing sulky according to claim 7 wherein said front and rear end members and said at least one transverse spacer disc are coaxial, of circular cross-sectional shape and of the same diameter.",
    "10. A racing sulky comprising two spaced apart generally longitudinally extending shafts, each of said shafts having a tubular forward end portion which terminates in an open forward end, a transverse member, and a pair of wheels rotatably mounted on said transverse member, each of said shafts being fixably secured to said transverse member; and a pair of hitches for securing said sulky to a harness or saddle of a horse, each of said hitches including a tapered front portion, a mid-portion and a cylindrical rear portion, the cylindrical rear portions of said hitches being received in the respective open forward ends of said shafts, said mid-portion including first and second longitudinally extending rigid members which together form longitudinally extending opening means therebetween for receiving an attaching member associated with a harness or saddle."
  ],
  "description_excerpt": "This invention relates to a hitch for securing the forward ends of the shafts of a racing sulky to a harness or saddle of a horse. More particularly, this invention relates to a hitch which is of improved aerodynamic design and which permits quicker attachment and detachment of a sulky to a saddle or harness than is the case with hitches or other attaching means presently known.\n\nVarious hitches and other means for securing the shafts of a racing sulky to a saddle or harness of a horse are known. Presently known hitches and other securing means suffer from at least two disadvantages. First, they do not permit rapid attachment or detachment of the shafts to or from a harness or saddle. Second they have wind resistance because they are not aerodynamically designed.\n\nThis invention according to one aspect provides a hitch of improved design which permits a sulky to be more rapidly secured to and detached from the saddle or harness of a horse than is the case with presently known hitches and other attachment means. The hitch of this invention is also of improved aerodynamic design, offering less wind resistance than presently known hitches.\n\nThe hitch of this invention is an elongated, generally cylindrical structure having a longitudinal axis and including a tapered front portion, a generally cylindrical mid-portion, and a cylindrical rear portion which is adapted to be received in an open tubular end of a tubular shaft, and in particular in an open front end of a tubular shaft of a racing sulky.",
  "cpc": [
    "B62C 5/02"
  ],
  "ipc": [
    "B62C 5/02"
  ],
  "inventors": [
    "William Kiraly"
  ],
  "filing_date": "1992-07-27",
  "publication_date": "1994-05-03",
  "grant_date": "1994-05-03",
  "priority_date": "1992-07-27",
  "application_number": "US-91945292-A",
  "family_id": "25442107",
  "cited_by_count": 12,
  "citations": [
    "US132855A",
    "US498684A",
    "US4033598A",
    "US4480428A"
  ]
}