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US4842346A
Expired / Lapsed
US
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Chain track
Assignee: Mannesmann Demag Krauss Maffei GmbH
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Filing: 1987-04-21
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Granted: 1989-06-27
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Expires: 2007-04-21
Abstract
Abstract A chain link of a chain track is penetrated at its joints to adjacent chain links by bolts, for example connector bolts or hinge bolts. The chain links are connected in a positive and frictional manner. The chain link may be made of elastomeric material in which flexible, high tensile filaments are embedded. The filaments may be wound back and forth between the two joining locations and loop around the cross-sectional surfaces of the bolts (connector bolts or hinge bolts) located at the joining locations, in alternating directions. A chain track assembled from individual chain link elements may have individual chain link elements including a shear field support of one or more layers of readily bending steel foil, surrounded on both sides by elastomeric material. The layer or layers of steel foils are clamped at the two joint locations of adjacent chain link elements between a transverse web and a clamping bar, with the chain links connected to one another by threaded fasteners. The shear field support is tensioned between the transverse web and the clamping bar and a space filled with an elastomeric material is provided between the side which faces away from the transverse web of the clamping bar and the shear field support for achieving a greater loading and a longer serviceable life of the endless chain track.
Inventors
- 👤 Eugen Schlegl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:53
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/24; B62D55/253
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
105 words
A chain track comprising: a plurality of adjoining chain links made of an elastomeric material; means for reinforcing said chain links extending from a first end of each link adjacent to a previous link to a second opposing end of said chain link adjacent to a subsequent link, said means for reinforcing is a shear field support made up of a flexible high tensile material exhibiting a high shear strength mounted in a substantially horizontal plane and embedded in said elastomeric material; first means for positively connecting said means for reinforcing of a first chain link to means for reinforcing a second adjacent chain link.
Claim 2
Dependent Claim
105 words
A chain track comprising: a plurality of adjoining chain links made of an elastomeric material; means for reinforcing said chain links extending from a first end of each link adjacent to a previous link to a second opposing end of said chain link adjacent to a subsequent link, said means for reinforcing is a shear field support made up of a flexible high tensile material exhibiting a high shear strength mounted in a substantially horizontal plane and embedded in said elastomeric material; first means for positively connecting said means for reinforcing of a first chain link to means for reinforcing a second adjacent chain link.
Claim 3
Dependent Claim
19 words
A chain track according to claim 1 wherein said shear field support is radially bending high strength steel elements.
Claim 4
Dependent Claim
21 words
A chain track according to claim 2 wherein said shear field support comprises a plurality of layers of thin steel foils.
Claim 5
Dependent Claim
27 words
A chain track according to claim 2 wherein said first means for positively connecting comprises a direct bolted connection between shear field supports of adjacent chain links.
Claim 6
Dependent Claim
36 words
A chain track according to claim 2 wherein said first and said second opposing ends of each chain link exhibit a transverse web; and second means for connecting said transverse web to said shear field support.
Claim 7
Dependent Claim
24 words
A chain track according to claim 5 wherein said first means for positively connecting comprises means for connecting transverse webs of adjacent chain links.
Claim 8
Dependent Claim
46 words
A chain track according to claim 5 wherein said second means for connecting comprises: a clamping bar and means for connecting said clamping bar to said transverse web; wherein an end of said shear field support is arranged between said clamping bar and said transverse web.
Claim 9
Dependent Claim
24 words
A chain track according to claim 7 wherein said first means for positively connecting comprises means for connecting transverse webs of adjacent chain links.
Claim 10
Dependent Claim
35 words
A chain track according to claim 8 wherein said chain links are configured so that adjacent chain links overhang each other and transverse webs of adjacent chain links are arranged in a congruent vertical plane.
Claim 11
Dependent Claim
48 words
A chain track according to claim 9 wherein a portion of said shear field support extends in a first direction past said clamping bar and subsequently in an opposite second direction between said clamping bar and said transverse web, in a partially encompassing relationship with said clamping bar.
Claim 12
Dependent Claim
32 words
A chain track according to claim 10 further comprising an elastomeric material filled gap defined between said portion of said shear field support extending in said first direction and said clamping bar.
Claim 13
Dependent Claim
33 words
A chain track according to claim 11, wherein said gap is defined by an outer side of the clamping bar and said shear field support, said gap narrows toward an adjacent chain link.
Claim 14
Dependent Claim
25 words
A chain track according to claim 11, wherein said shear field support exhibits a layer of elastomeric material on a side opposing said clamping bar.
Claim 15
Dependent Claim
32 words
A chain track according to claim 11, wherein the shear field supports of adjacent chain links at the connection points are guided with oppositely arranged incline in said gaps of adjacent links.
Claim 16
Dependent Claim
41 words
A chain track according to claim 11, further comprising support element means for preventing collapse of a chain link secured at the connection points of adjacent chain links at two outer edge zones of an inner running surface for chassis wheels.
Claim 17
Dependent Claim
58 words
A chain track according to claim 15, wherein said support element means comprises a disk segment, centrally secured at said transverse webs, exhibiting a curved contact roll surface directed towards said inner running surface, wherein said curved contact roll surface exhibits a radius of curvature which is smaller than or equal to a radius of the chassis wheels.
Claim 18
Dependent Claim
31 words
A chain track according to claim 16, further comprising a rubber cover for covering a gap defined between said inner running surface and the curved roll surface of the disk segment.
Claim 19
Dependent Claim
27 words
A chain track according to claim 15, wherein said support element means comprises a leaf spring secured at the transverse webs and contacting the inner running surface.
Claim 20
Dependent Claim
21 words
A chain track according to claim 18, further comprising a plurality of progressively shorter leaf springs secured at said transverse web.
Claim 21
Dependent Claim
47 words
A chain track according to claim 11 further comprising bolt-like extensions connected to said transverse webs which extend over a lateral edge of the chain link element; and means for protecting a lateral edge of a chain link secured to respective bolt-like extension of a chain link.
Claim 22
Dependent Claim
55 words
A chain track as in claim 2, wherein the chain links further comprise a plurality of orifice means for the engagement of teeth of a drive gear, and wherein said shear field support means being provided in a peripheral area of the orifice means with corrugations extending in a longitudinal direction of the chain link.
Claim 23
Dependent Claim
35 words
A chain track as in claim 6, wherein said first means for positively connecting comprises clamping strip means for fastening the shear field support means to a transverse stud means of an adjoining chain link.
Claim 24
Dependent Claim
47 words
A chain track as in claim 22, wherein said transverse stud means at a first joint of the chain link is arranged above the shear field support and the transverse stud means at a second joint of the chain link is arranged under the shear field support.
Claim 25
Dependent Claim
34 words
A chain track as in claim 23, wherein said clamping strip means further comprises locking edges which engage locking edges of said transverse stud means of the adjoining chain links in a positive manner.
Claim 26
Dependent Claim
71 words
A chain track as in claim 24, further comprising: push rod means penetrating a plane defined by the shear field support, hingedly attached to said transverse studs at the two joints of the chain link for preventing excessive buckling of said links in areas between said transverse stud means; and chain guide teeth connected to the chain link at said transverse stud means facing a bottom surface of said chain track.
Claim 27
Dependent Claim
36 words
A chain track as in claim 25, wherein said chain link further comprises orifice means for the engagement of teeth of a drive gear in an area between the transverse stud means of a chain link.
Claim 28
Dependent Claim
36 words
A chain track as in claim 8, wherein said chain link further comprises orifice means for the engagement of teeth of a drive gear in an area between the transverse stud means of a chain link.
Claim 29
Dependent Claim
36 words
A chain track as in claim 5, wherein said chain link further comprises orifice means for the engagement of teeth of a drive gear in an area between the transverse stud means of a chain link.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |