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| Number | Title | Issue Date |
| 7766433 | Cartridge for use as joint in endless track chain and associated method A cartridge is provided for use as a joint between links of an endless track chain. The cartridge is designed for assembly prior to attachment of the cartridge to the links. An associated method is disclosed. ... | 08/03/2010 |
| 7597410 | Track chain joint with radial seal unit An endless track chain device, comprises first and second links and a track chain joint. The track chain joint comprises a radial seal unit that inhibits ingress of debris between a bushing of the joint and the second link into a region between a pin of the joint an... | 10/06/2009 |
| 7370865 | Assembly including face seal sized to interference fit in housing An assembly for a tracked vehicle includes a wheel defining a wheel cavity and a face seal including a rigid sealing ring and a flexible ring disposed on the sealing ring, the flexible ring having an outermost substantially cylindrical surface defining a maximum dia... | 05/13/2008 |
| 7367739 | Two component seal A pair of pivoting parts are held together with a pin, with a first part, such as a rod end of a hydraulic actuator, positioned between two flanges of a bracket, with the flanges having surfaces mating with sides surfaces of the rod end. A seal is placed in each of ... | 05/06/2008 |
| 7347513 | Cartridge assembly for a track chain of a track type machine and machine using same A cartridge bearing assembly for a track chain of a track type work machine is provided. The cartridge bearing assembly includes axial/radial load bearing insert members positioned about a pin, and a rotatable bushing positioned therebetween. Crowned sleeve bearings... | 03/25/2008 |
| 7293778 | Systems and methods for sealing between stators and rotors A seal is used between a housing and a shaft having an axis. The seal includes a first portion and a second portion engageable with each other and movable relative to each other. The first portion and the second portion are configured to be received in a cavity betw... | 11/13/2007 |
| 7240973 | Crawler, crawler pin, crawler bush, and crawler manufacturing method A crawler having a crawler pin and a crawler bush having lubrication between the crawler pin and the crawler bush without lowering the strength of the crawler at the running time, thereby to prevent the creak or seizure, as might otherwise be caused at the running t... | 07/10/2007 |
| 7137465 | Crawler device A crawler device for traversing in a confined environment, searching victims or inspecting defections, comprises an elongated flexible drive shaft extending along a central axis between a proximal end and a distal end, a motor operatively connected to the drive shaf... | 11/21/2006 |
| 7121555 | Seal assembly and crawler-track connection structure A seal assembly has simple assembly structures, and provides secure sealing effects. A crawler-track connection structure allows the seal assembly to be easily mounted, and securely prevents overflow of a lubricant and the like to the outside. A pair of seal rings (... | 10/17/2006 |
| 7090222 | Shaft sealing assembly for vacuum processing apparatus Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an ann... | 08/15/2006 |
| 7004474 | Seal for an endless track A seal for an endless track has a cross section having a centerline parallel to an axis of the seal and a configuration symmetric with respect to the centerline of the cross section. The seal can include an elastically deformably configured portion having a cross se... | 02/28/2006 |
| 6976681 | Slide ring seal assembly including a radial, rotation preventing arrangement A slide ring seal assembly includes a slide ring having an axially extending annular leg. The leg has radially outer and radially inner circumferential surfaces and a free axial end. A plurality of circumferentially spaced recesses are provided in leg at the free ax... | 12/20/2005 |
| 6955359 | Seal assembly and crawler-track connection structure A seal assembly has simple assembly structures, and provides secure sealing effects. A crawler-track connection structure allows the seal assembly to be easily mounted, and securely prevents overflow of a lubricant and the like to the outside. A pair of seal rings (... | 10/18/2005 |
| 6951373 | Crawler belt and seal for use therein A seal (21) is constituted by an outer lip portion (22) to be held in abutting engagement with an outer link portion (9) of a crawler belt (7), an inner lip portion (23) to be held in abutting engagement with a bush (11), an... | 10/04/2005 |
| 6948784 | Track pin bushing having a metallurgically bonded coating A track pin bushing for cooperating with a track pin in an endless track has a tubular body with a metallurgically bonded wear-resistant coating and a method for forming such a coated track pin bushing is taught herein. The tubular body, formed of an iron-based allo... | 09/27/2005 |
| 6938732 | Chain with pins equipped with lubricating cartridges and cartridge for said chain A chain with links made of plates connected with hollow pins containing a reserve of lubricant connected with the chain parts to be lubricated. The lubricant reserve is contained in replaceable cartridges inserted removably in the pins through an appropriate end pas... | 09/06/2005 |
| 6739680 | Cartridge assembly for a track chain A cartridge assembly for a track chain assembly is provided. The cartridge assembly includes a bushing rotatably positioned about a track pin. Bearing members are positioned about the track pin adjacent the bushing. Collars are positioned about the track pin adjacen... | 05/25/2004 |
| 6634725 | Crawler Hardened surface layers (12) and (14) of a nitride or other compound, which is higher in hardness than dirt or soil, are formed on the inner peripheral surface (11B) of each metal bush (11) and on the outer peripheral surface (13A) of each connecting pin ... | 10/21/2003 |
| 6565161 | Heavy duty track link A track link assembly having a first pair of track links, and a second pair of track links is disclosed. The track link assembly further includes a bushing having ends pressed into an inner boss of the second pair of track links. The track link assembly y... | 05/20/2003 |
| 6478388 | Seal arrangement for a track type work machine and an associated method for producing a seal arrangement A seal arrangement is disclosed. The seal arrangement includes a seal groove having a central axis. The seal groove is defined by at least a first wall segment, a second wall segment, and a third wall segment interposed the first wall segment and the seco... | 11/12/2002 |
| 6390572 | Crawler belt The present invention concerns a crawler belt (7) incorporating a sealing devices (21), which are each constituted by a coned disc spring (23) and a seal ring (22), to seal up gap spaces between track links (8) and bushes (13). A seal anchor hole (12) is ... | 05/21/2002 |
| 6386651 | Insert arrangement for a track chain assembly An insert arrangement includes a ring member having (i) a first sidewall, (ii) a second sidewall, (iii) a bore defined therethrough, (iv) a first seal groove defined in the first sidewall, and (v) a second seal groove defined in the second sidewall. The i... | 05/14/2002 |
| 6206491 | Crawler device for crawler vehicle As well as a torsional rigidity of right and left crawler links is secured, a seal is prevented from damaging so as to restrict a leakage of a lubricating oil, so that a durability of a crawler device is improved. In order to achieve this, a crawler devic... | 03/27/2001 |
| 6105969 | Track joint sealing assembly for sealing a track joint in a track chain A track seal assembly (174) adapted to seal a track joint (172) includes a track link and a ceramic seal member (186). The track seal further includes an elastomeric member (176) positioned between the track link and the ceramic seal member (186). The tra... | 08/22/2000 |
| 6102408 | Track link assembly having a resiliently bonded protectively coated seal member and associated method for maintaining a track link assembly A track link assembly includes a first track link having a passageway defined therethrough. The track link assembly also includes a bushing having an end face, wherein the bushing is positioned within the passageway. The track link assembly further includ... | 08/15/2000 |
| 6089683 | Track bushing having laser cladding end treatment for improved abrasion and corrosion resistance, and a process A track bushing for an endless track of a track-type vehicle includes a cylindrical tubular shape, a first end and a second end, and first end and second bearing surfaces adjacent respective ends. A circumferential groove having a depth in an axial direct... | 07/18/2000 |
| 6074022 | Track bushing having arc welded end treatment for improved abrasion and corrosion resistance, and a process for making the same A track bushing for an endless track of a track-type machine includes a cylindrical tubular shape having a first end and a second end and a longitudinal axis. The track bushing further includes a first end bearing surface that is adjacent to the first end... | 06/13/2000 |
| 5829850 | Crawler chain for tracked vehicles A track system for a track vehicle which has a crawler chain and a driving sprocket wheel. The chain has links each of which has a pin assembly with a bushing or one piece bolt the outer periphery of which at least is composed of a material consisting of ... | 11/03/1998 |
| 5763956 | End face track seal with dirt seal An end face seal for sealing between first and second articulately coupled members of a track joint is disclosed. The seal is provided with a flexible dirt shield of elastomeric material. The dirt shield extends radially outwardly from the seal ring and h... | 06/09/1998 |
| 5390997 | End face sealing assembly device for track shoe coupling An end face sealing assembly device (S2) comprises a seal ring (15) having an approximately parallelogrammatic cross section so that an annular lip (15c) contacts a bushing end face (4a); a support ring (14) having an approximately L-shaped cro... | 02/21/1995 |
| 5374115 | Sealing arrangement for hinges of track chains Sealing arrangement including an elongated bolt formed with a unilaterally open bore, a bushing coaxial with the bolt and spaced radially outwardly therefrom to form an annular passage between the bolt and bushing, the bushing being integrally provided wi... | 12/20/1994 |
| 5251913 | Track roller for tracked vehicles Sealed roller, particularly for tracked vehicles, including a supporting shaft which is inserted with a tight fit in respective blind bushes preset for fixing to a supporting structure, and a roller body rotatably supported about the shaft.... | 10/12/1993 |
| 4819999 | End face seal assembly An end face seal assembly is disclosed for use in severe service applications, such as for use in sealing a track joint. The seal assembly includes a rubber load ring, an L-shaped metal seal ring and a polyurethane seal ring. The polyurethane seal ring is... | 04/11/1989 |
| 4688805 | Annular front-sealing gasket assembly The gasket assembly comprises an annular gasket (20) and a coaxial thrust ring. The central portion of the ring (20) is bounded by two faces (35) and (36) which are parallel and inclined so that the thickness of the central portion remains constant. The f... | 08/25/1987 |
| 4602825 | Anti-torsion means for track assemblies for track-type vehicles A track assembly (11,11a) for a track-type vehicle comprises a plurality of wide low ground pressure track shoes (16) pivotally interconnected by a link assembly (17), disposed intermediate the widths of the track shoes (16). At least one chain (20) furth... | 07/29/1986 |
| 4568090 | Oil seal for lubricated tracks on a crawler tractor A track link assembly in which an outer link end has an annular recess opening towards an inner link end and which further has a track bushing on the connecting pin or link extending through the inner link and fixed thereto. The bushing has an end facing ... | 02/04/1986 |
| 4560174 | Multi lip seal A novel seal means is positioned between two coupled mechanical parts rotating about a pin, the pin being connected to one part and rotating within a bushing connected to the other part with pin and bushing. The seal means comprises an elastic load ring o... | 12/24/1985 |
| 4469336 | Track pin seal A unitary seal comprises an annular support section formed of a rigid polycarbonate plastic and an annular sealing section formed of a flexible polyurethane elastomer. The support and sealing sections are directly bonded together without the use of an adh... | 09/04/1984 |
| 4461488 | Seal for link of track chain A chain-track link assembly has a pin extending along and defining an axis, an outer link element fixed to the pin and forming therewith an axially open annular recess having an annular end face lying substantially in a plane perpendicular to the axis and... | 07/24/1984 |
| 4457521 | Reinforced track pin assemblies and seals therefor An end face seal especially adapted for use in severe service environments such as for sealing track pins of crawler type tractors. The seal includes a primary annular seal, having a radially extending flange portion for contacting a mating surface in fac... | 07/03/1984 |
