Abstract A sealing device serving concurrently as a thrust bearing device for a hinge joint of endless track links comprising an annular wave shaped spring, a metal ring and an annular resilient member. The annular wave-shaped spring so made of hard steel and fitted in an annular recess formed in one pair of links. The metal ring is substantially L-shaped in section and also fitted in said annular recess. The metal ring is caused by said wave-shaped spring to press against one end of a bushing which is secured to another pair of links adjacent said one pair of links for pivotal connection therewith. The annular resilient member is mounted between an offset portion of said metal ring and a pin firmly secured to said one pair of links and has dimensions slightly larger than the clearance between said offset portion of said metal ring. Said pin, said annular wave-shaped spring, said metal ring and said annular resilient member form a unit and are mounted in said annular recess between said pairs of links pivotally connected to each other.
A sealing device serving concurrently as a thrust bearing device for a hinge joint of endless track links comprising an annular wave-shaped spring made of hard steel fitted in an annular recess in one pair of links, a metal ring substantially L-shaped in section also fitted in said annular recess and caused by said wave-shaped spring to press against one end of a bushing secured to another pair of links adjacent said one pair of links for pivotal connection therewith, and an annular resilient member mounted between an offset portion of said metal ring and a pin firmly secured to said one pair of links and having dimensions slightly larger than the clearance between said offset portion of said metal ring and said annular resilient member, said annular wave-shaped spring, said metal ring and said annular resilient member forming a unit and mounted in said annular recess between said pairs of links pivotally connected to each other.
Claim 2
Dependent Claim
157 words
A sealing device serving concurrently as a thrust bearing device for a hinge joint of endless track links comprising an annular wave-shaped spring made of hard steel fitted in an annular recess in one pair of links, a metal ring substantially L-shaped in section also fitted in said annular recess and caused by said wave-shaped spring to press against one end of a bushing secured to another pair of links adjacent said one pair of links for pivotal connection therewith, and an annular resilient member mounted between an offset portion of said metal ring and a pin firmly secured to said one pair of links and having dimensions slightly larger than the clearance between said offset portion of said metal ring and said annular resilient member, said annular wave-shaped spring, said metal ring and said annular resilient member forming a unit and mounted in said annular recess between said pairs of links pivotally connected to each other.
Claim 3
Dependent Claim
28 words
A sealing device as defined in claim 1 in which said metal ring is wave-shaped in its surface which is maintained in contact with said annular wave-shaped spring.
Claim 4
Dependent Claim
35 words
A sealing device as defined in claim 1 in which the resilient member comprising free end defined with an elevation, a depression, a semicircular corner portion, an elevation and a depression which are successively connected.
Claim 5
Dependent Claim
63 words
A sealing device as defined in claim 1 in which surfaces of said annular ring and said bushing maintained in contact with each other have a coating of a wear-resistant superhard material selected from the group including nickel, tungsten and molybdenum and applied thereto by metallization or bonding to increase the wear resistance of sliding surfaces and the sealing capacity of the device.