Patent US3679895A successfully refreshed from Google Patents.
US3679895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical apparatus for checking and signalling the position of a railway-track switch or the like
Assignee: D'ELECTRICIT MORS Ste
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Filing: 1970-12-29
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Granted: 1972-07-25
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Expires: 1990-12-29
Abstract
Abstract An electromechanical apparatus for checking and signalling the position of a railway-track switch comprising an electric switch actuated by a cam solid with a cam-carrying shaft forming the crank-pin of a crank whose arm is pivoted to one end of a transmission rod, the other end of which is pivoted to a switch blade, said crank and rod being connected by a ball joint comprising a connecting member mounted on and displaceable along said rod for being fixed in a selectively adjustable relative position.
Inventors
- 👤 Marcel Luc Amedee Paulve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:33
CPC Classifications
B; B61; B61L; B61L7/00; B61L7/06; B61L7/061; B61L7/063
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
196 words
In an electromechanical apparatus for checking and signalling the state of a railway-track switch including a stock-rail and a switch blade and comprising: an enclosure formed of a casing and a base connected to said Stock rail; an electrical switch provided in said enclosure; a rotary cam actuating said electrical switch; a rotating driving shaft carrying said rotary cam solid in rotation with said driving shaft; a crank actuating said driving shaft forming the crank pin of said crank; and a rod, one end of said rod being assembled by a hinged connection to said crank, the other end of said rod being hingedly connected to said switch blade, wherein the improvement consists in that said hinged connection between said crank and said rod is of a spherical type forming a ball-joint and comprising a connecting member movably mounted for adjustment along said rod and locking means fixing said connecting member on said rod in a selected position, in that said casing and said base comprise means so as to form a fluid-tight mechanical unit and in that the connection between the said cam and its driving shaft is of rigid and of positively solid character.
Claim 2
Dependent Claim
196 words
In an electromechanical apparatus for checking and signalling the state of a railway-track switch including a stock-rail and a switch blade and comprising: an enclosure formed of a casing and a base connected to said Stock rail; an electrical switch provided in said enclosure; a rotary cam actuating said electrical switch; a rotating driving shaft carrying said rotary cam solid in rotation with said driving shaft; a crank actuating said driving shaft forming the crank pin of said crank; and a rod, one end of said rod being assembled by a hinged connection to said crank, the other end of said rod being hingedly connected to said switch blade, wherein the improvement consists in that said hinged connection between said crank and said rod is of a spherical type forming a ball-joint and comprising a connecting member movably mounted for adjustment along said rod and locking means fixing said connecting member on said rod in a selected position, in that said casing and said base comprise means so as to form a fluid-tight mechanical unit and in that the connection between the said cam and its driving shaft is of rigid and of positively solid character.
Claim 3
Dependent Claim
97 words
Apparatus according to claim 1, wherein said ball-joint comprises a joint pin, one end of said joint pin being provided with a spherical head forming a ball, the opposite end of said joint pin being provided with a substantially conical surface, a mating cavity provided in the end of said crank and with said ball located therein, a mating conical orifice in said connecting member in which said conical surface is fitted, said opposite end of the joint pin receiving a removable locking means consisting of a nut screwed on a threaded portion of said opposite end.
Claim 4
Dependent Claim
78 words
Apparatus according to claim 2, including a bearing for said ball-joint and additionally comprising means for automatically taking up the play resulting from wear in the bearing of said joint, said means including a two-piece bushing located in said cavity, said bushing surrounding and supporting said spherical head, an adjustable stop comprising a threaded cap, and a spring bearing upon said stop and bearing upon said bushing and resiliently retaining said bushing in pressure contact with said head.
Claim 5
Dependent Claim
52 words
Apparatus according to claim 2, wherein said connecting member consists of an integral element comprising a smooth cylindrical bore slidingly and rotatably mounted on a round portion of said rod, and a conical bore receiving said joint pin, both said bores having their respective longitudinal axes in spaced and substantially orthogonal relationship.
Claim 6
Dependent Claim
44 words
Apparatus according to claim 4, wherein said means for fixing the connecting member comprises at least two self-locking nuts screwed on a threaded portion of said rod respectively on either side of said connecting member, and locking rings associated respectively with said locking nuts.
Claim 7
Dependent Claim
50 words
Apparatus according to claim 2, further including a resilient sealing ring interposed in pressure contact between said connecting member and the end of said crank containing said ball, and a rigid cup in which said ring is set, said crank end having a bulging portion applied on said sealing ring.
Claim 8
Dependent Claim
55 words
Apparatus according to claim 1, further including a fastening lug for removably securing said base to a stock rail of a switch, a separate fixing bracket having a plurality of recesses, and fastening means located therein for removably connecting said bracket to said base, wherein said fastening lug additionally forms a flange of said bracket.
Claim 9
Dependent Claim
39 words
Apparatus according to claim 1, further including end-fitting means for hingedly connecting said switch blade to said rod, said end-fitting means being so constructed and arranged as to be removably secured to and selectively adjustable on said switch blade.
Claim 10
Dependent Claim
84 words
Apparatus according to claim 1, further including means for friction driving said cam, said friction driving means comprising a collar located on one side of said cam on said cam driving and carrying shaft, a frictional resilient washer having a longitudinal slot in the bore thereof and being located on the other side of said cam, a nut adjacent said washer and screwed on the end of said shaft, and at least one radial pin solid with Said shaft and penetrating into said slot.
Claim 11
Dependent Claim
63 words
Apparatus according to claim 1, wherein the casing of said switch enclosure incorporates an orifice through which said cam-carrying shaft passes, and further including a hood (19) for protecting said enclosure, a plurality of annular gaskets for sealing said casing, tube means (32) for allowing entry of electrical cable means into said casing and means (34, 35, 36) for sealing said tube means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |