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US 5,887,958 AGranted
Track link assembly having positive pin retention
AssigneeBerco S.p.A.
InventorsMaurizio Bissi, Jerry W. Gehrke
Life of this patent
Estimating the term…
Abstract
A track link assembly consists of two parallel arranged chains of links connected end to end, the links of each chain being connected by a joint including a link pin press fit in the bore of the outboard end collar. In order to limit the movement of the collar on the link pin and prevent excessive end play at the seal, a snap ring is fitted on a portion of each end of the link pin which extends outward from the bore of the outboard end collar. One or more protrusions on the outer surface of the boss protect the snap ring from being knocked off during use.
Claims11
A one piece track link for a track type vehicle, comprising:
- an inboard end collar;
- an outboard end collar having an inner surface and an outer surface;
- a boss formed on said outer surface of said outboard end collar and having an outer surface;
- a bore extending through said outboard end collar from said inner surface to said outer surface of said boss;
- and
- at least one outwardly extending protrusion formed on said outer surface of said boss and extending circumferentially at least partially around said bored, wherein said at least one protrusion comprises at least two arcuate protrusions which together extend around said bore by an angle of at least 180.degree..
3 more elements
A track link assembly comprising:
- a one piece link having an inboard end collar, an outboard end collar having an inner surface and an outer surface, a boss formed on said outer surface of said outboard end collar and having an outer surface, a bore extending through said outboard end collar from said inner surface to said outer surface of said boss, and at least one outwardly extending protrusion formed on said outer surface of said boss and extending circumferentially at least partially around said bore, wherein said at least one protrusion comprises at least two arcuate protrusions which together extend circumferentially around said bore by an angle of at least 180.degree.;
- and
- a link pin having an end press fitted in said bore extending through said outboard end collar.
A track link assembly comprising:
- two parallel arranged chains of links connected end to end, at least one link of each of said chains comprising a one piece link having:
- a) an inboard end collar having an inner surface, an outer surface and a bore extending through said inboard end collar from said inner surface to said outer surface thereof, and
- b) an outboard end collar having an inner surface, an outer surface, a boss formed on said outer surface of said outboard end collar and having an outer surface, a bore extending through said outboard end collar from said inner surface to said outer surface of said boss, and at least one outwardly extending protrusion formed on said outer surface of said boss and extending circumferentially at least partially around said bore, wherein said at least one protrusion comprises at least one arcuate protrusion extending circumferentially around said bore by an angle of at least 180.degree.;
- and
- a pivot joint between adjacent ones of said links of each of said chains of links and between said two parallel arranged chains of links, each said joint comprising:
- c) a link pin having ends press fitted in said bores extending through said outboard end collars of corresponding links of said two parallel arranged chains of links, and
- d) a bushing rotatably mounted on said link pin between said corresponding links, wherein the bores of the inboard end collars of the links in each of said chains of links are mounted on the bushing so as to connect the links of each of said chains of links.
4 more elements
A one piece track link for a track type vehicle, comprising:
- an inboard end collar;
- an outboard end collar having an inner surface and an outer surface;
- a boss formed on said outer surface of said outboard end collar and having an outer surface;
- a bore extending through said outboard end collar from said inner surface to said outer surface of said boss;
- and
- at least one outwardly extending protrusion formed on said outer surface of said boss and extending circumferentially at least partially around said bore, wherein said at least one protrusion comprises two arcuate protrusions, each of said two arcuate protrusions extending circumferentially around said bore by an angle of 90.degree., said protrusions being symmetrical about a diametrical line of said bore.
3 more elements
A track link assembly comprising:
- a one piece link having an inboard end collar, an outboard end collar having an inner surface and an outer surface, a boss formed on said outer surface of said outboard end collar and having an outer surface, a bore extending through said outboard end collar from said inner surface to said outer surface of said boss, and at least one outwardly extending protrusion formed on said outer surface of said boss and extending circumferentially at least partially around said bore, wherein said at least one protrusion comprises two arcuate protrusions, each of said two arcuate protrusions extending around said bore by an angle of 90.degree., said protrusions being symmetrical about a diametrical line of said bore;
- and
- a link pin having an end press fitted in said bore extending through said outboard end collar.
A track link assembly comprising:
- two parallel arranged chains of links connected end to end, at least one link of each of said chains comprising a one piece link having:
- a) an inboard end collar having an inner surface, an outer surface and a bore extending through said inboard end collar from said inner surface to said outer surface thereof, and
- b) an outboard end collar having an inner surface, an outer surface, a boss formed on said outer surface of said outboard end collar and having an outer surface, a bore extending through said outboard end collar from said inner surface to said outer surface of said boss, and at least one outwardly extending protrusion formed on said outer surface of said boss and extending circumferentially at least partially around said bore, wherein said at least one protrusion comprises two arcuate protrusions, each of said two arcuate protrusions extending around said bore by an angle of 90.degree., said protrusions being symmetrical about a diametrical line of said bore;
- and
- a pivot joint between adjacent ones of said links of each of said chains of links and between said two parallel arranged chains of links, each said joint comprising:
- c) a link pin having ends press fitted in said bores extending through said outboard end collars of corresponding links of said two parallel arranged chains of links, and
- d) a bushing rotatably mounted on said link pin between said corresponding links, wherein the bores of the inboard end collars of the links in each of said chains of links are mounted on the bushing so as to connect the links of each of said chains of links.
4 more elements
Dependencies are inferred from the claim text.