Patent US4802417A successfully refreshed from Google Patents.
US4802417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gangway for a railway car passageway
Assignee: Alstom Transport Deutschland GmbH
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Filing: 1987-07-14
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Granted: 1989-02-07
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Expires: 2007-07-14
Abstract
Abstract A gangway is provided between two railway cars or units of railway cars that are pivoted to one another, and that forms a continuous, stepless passage for all travel motions. The entire gangway is designed as a unit that is held in the central position to each of the ends of the cars facing one another with the ability to shift lengthwise, by a centering device, and is supported and guided on bridge bearings, and is mounted to be able to pivot around its vertical axis and also to be able to tip out of the horizontal plane. The bridge area of the gangway consists of a number of rigid rails placed parallel to one another at prescribed distances and able to move lengthwise, which are enclosed and guided at both ends in supporting profiles that are mounted and guided on the bridge bearings associated with them.
Inventors
- 👤 Wolfgang Kuker
- 👤 Peter Braemert
- 👤 Werner Ortmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:15
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/20
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
96 words
A gangway for spanning a space between adjacent ends of two railway cars, comprising: a plurality of substantially rigid-parallel and spaced apart rails forming a bridge area in the space; bridge bearings connected to the end of each railway car, each said bridge bearing being pivotable with respect to the end of a railway car for pivotal movement about an axis; guide means for supporting said rails for sliding with respect to each other, said guide means being mounted on said bridge bearings for pivoting therewith and for lengthwise movement with respect to said bridge bearings.
Claim 2
Dependent Claim
96 words
A gangway for spanning a space between adjacent ends of two railway cars, comprising: a plurality of substantially rigid-parallel and spaced apart rails forming a bridge area in the space; bridge bearings connected to the end of each railway car, each said bridge bearing being pivotable with respect to the end of a railway car for pivotal movement about an axis; guide means for supporting said rails for sliding with respect to each other, said guide means being mounted on said bridge bearings for pivoting therewith and for lengthwise movement with respect to said bridge bearings.
Claim 3
Dependent Claim
34 words
A gangway according to claim 1 wherein said guide means comprise a pair of spaced apart supporting profiles engaged on said bridge bearings, said rails extending between and being supported on said supporting profiles.
Claim 4
Dependent Claim
37 words
A gangway according to claim 2 wherein each supporting profile has opposite end areas, said opposite end areas of each supporting profile being engaged on one bridge bearing for pivoting and lengthwise sliding on said bridge bearing.
Claim 5
Dependent Claim
42 words
A gangway according to claim 3 wherein each bridge bearing includes a horizontal guide on which one of said supporting profiles is engaged, and a verticle guide connected to said horizontal guide engageable against a side of one of said supporting profiles.
Claim 6
Dependent Claim
26 words
A gangway according to claim 4 wherein each horizontal guide of each bridge bearing is crowned at least in a lengthwise direction of the railway cars.
Claim 7
Dependent Claim
33 words
A gangway according to claim 2 wherein each of said supporting profiles comprises a U-shaped channel, open ends of said U-shaped channels facing each other and receiving opposite said ends of said rails.
Claim 8
Dependent Claim
30 words
A gangway according to claim 6 where each U-shaped channel includes upper and lower side bars, and slip ledges connected between said upper and lower side bars and each rail.
Claim 9
Dependent Claim
24 words
A gangway according to claim 2 including pivots extending in a horizontal direction for pivotally connecting at least one rail to said supporting profiles.
Claim 10
Dependent Claim
24 words
A gangway according to claim 1 wherein each bridge bearing is mounted for pivotal movement about a horizontal axis to a respective railway car.
Claim 11
Dependent Claim
17 words
A gangway according to claim 1 including sliders slidably mounted between adjacent rails in said bridge area.
Claim 12
Dependent Claim
26 words
A gangway according to claim 10 wherein each of said sliders comprises round bars made of slippery plastic material engaged in facing recesses of adjacent rails.
Claim 13
Dependent Claim
47 words
A gangway according to claim 10 including upper and lower layers of said rails, each rail of said upper layer being slidably engaged to an adjacent rail of said lower layer by sliders for constraining relative movement between adjacent rails substantially to linear sliding movement there between.
Claim 14
Dependent Claim
50 words
A gangway according to claim 1 including centering means connected between a center of said guide means and each of the railway cars for maintaining centering of guide means in said space between the railway cars, said centering means permitting longitudinal movement between said guide means and the railway cars.
Claim 15
Dependent Claim
31 words
A gangway according to claim 13 wherein said centering means comprises a bridge connector plate connected to said guide means and being connected resiliently to each end of the railway cars.
Claim 16
Dependent Claim
25 words
A gangway according to claim 14 wherein said bridge connector plate retains said guide means and said bridge area from lifting off said bridge bearings.
Claim 17
Dependent Claim
97 words
A gangway for passageways between two railway cars having ends that are pivoted to one another, comprising a bridge area having a plurality of essentially rigid rails that are parallel to one another and spaced at prescribed distances from one another, said rails being movably relative to one another, guide elements to which said rails are engaged for guiding said rails relative to the ends of the cars, and bridge bearings pivotally connected to ends of respective railway cars and connected to said guide elements said guide elements being movable lengthwise with respect to the bridge bearing.
Claim 18
Dependent Claim
97 words
A gangway for passageways between two railway cars having ends that are pivoted to one another, comprising a bridge area having a plurality of essentially rigid rails that are parallel to one another and spaced at prescribed distances from one another, said rails being movably relative to one another, guide elements to which said rails are engaged for guiding said rails relative to the ends of the cars, and bridge bearings pivotally connected to ends of respective railway cars and connected to said guide elements said guide elements being movable lengthwise with respect to the bridge bearing.
Claim 19
Independent Claim
95 words
A method of bridging the space between adjacent ends of railway cars comprising providing pivotable bridge bearings on each of the railway car ends, extending a pair of supporting profiles between the ends of the railway cars on the bridging bearings to permit lengthwise with respect to the bridge bearings and pivotal movement with the bridge bearings, and extending a plurality of parallel and spaced rails between said supporting profiles to form a bridge area between the railway car ends, said rails being slidable with respect to each other with pivoting of said supporting profiles.
Claim 20
Independent Claim
95 words
A method of bridging the space between adjacent ends of railway cars comprising providing pivotable bridge bearings on each of the railway car ends, extending a pair of supporting profiles between the ends of the railway cars on the bridging bearings to permit lengthwise with respect to the bridge bearings and pivotal movement with the bridge bearings, and extending a plurality of parallel and spaced rails between said supporting profiles to form a bridge area between the railway car ends, said rails being slidable with respect to each other with pivoting of said supporting profiles.
Claim 21
Dependent Claim
32 words
A method according to claim 17 including resiliently connecting a center of each supporting profile to each railway car end for maintaining a centering of the supporting profiles and the bridge area.
Claim 22
Dependent Claim
23 words
A method according to claim 18 including providing sliders between adjacent rails for constraining relative movement between said rails substantially to sliding movement.
Claim 23
Dependent Claim
19 words
A method according to claim 19 including arranging the rails in two layers of rails, one above the other.
References Cited (Backward Citations)
US1449403A
Cited
DE539581C
Cited
DE640970C
Cited
NL110095C
Cited
US3137514A
Cited
US3370552A
Cited
US3572254A
Cited
US3754515A
Cited
US4421339A
Cited
DE3305062A1
Cited
US4667604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |