US3645364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting braking apparatus
Assignee: Schweizerische Industrie Gesellschaft
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Filing: 1969-06-10
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Granted: 1972-02-29
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Expires: 1989-06-10
Abstract
Abstract A self-adjusting braking apparatus, particularly for railmounted vehicles, comprises two brakeshoes which are movable against opposite sides of a disk by two levers each of which has one end pivotally connected to a shoe. The other end of one of the levers is pivoted to the frame of the vehicle and the other end of the other lever is movable with reference to the other end of the one lever by a braking cylinder. A coupling device of infinitely variable length connects intermediate portions of the two levers so that the levers pivot with reference to the coupling device while the other end of the other lever is subjected to the action of the braking force whereby the shoes move toward the respective sides of the disk. The length of the coupling device is automatically reduced in response to engagement of a projection of the coupling device with an abutment provided on a third lever one end of which is connected to the one end of the other lever and the other end of which is pivoted to the frame. Shortening of the coupling device compensates for wear on linings of the brakeshoes.
Inventors
- 👤 Alfred Otto
- 👤 Horst Klassen
- 👤 Daniel Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:58
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; B; B61; B61H; B61H5/00; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/2245; F16D65/56
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
165 words
Self-adjusting braking apparatus, particularly for use in rail-mounted vehicles, comprising a rotary member; a pair of brakeshoes movable toward and away from engagement with opposite sides of said rotary member; a first lever having one end connected to one of the shoes and another end pivotable about a fixed axis; a second lever having one end connected to the other shoe and another end arranged to move with reference to the other end of said first lever in response to application of a braking force; an adjustable coupling device of infinitely variable length articulately connected with intermediate portions of said levers so that the levers can pivot with reference to the coupling device in response to application of the braking force to thereby move the respective shoes toward engagement with said rotary member; and adjusting means operative to reduce the length of said coupling device when the distance between the other ends of said levers reaches a predetermined value during application of the braking force.
Claim 2
Dependent Claim
165 words
Self-adjusting braking apparatus, particularly for use in rail-mounted vehicles, comprising a rotary member; a pair of brakeshoes movable toward and away from engagement with opposite sides of said rotary member; a first lever having one end connected to one of the shoes and another end pivotable about a fixed axis; a second lever having one end connected to the other shoe and another end arranged to move with reference to the other end of said first lever in response to application of a braking force; an adjustable coupling device of infinitely variable length articulately connected with intermediate portions of said levers so that the levers can pivot with reference to the coupling device in response to application of the braking force to thereby move the respective shoes toward engagement with said rotary member; and adjusting means operative to reduce the length of said coupling device when the distance between the other ends of said levers reaches a predetermined value during application of the braking force.
Claim 3
Dependent Claim
62 words
Self-adjusting braking apparatus as defined in claim 1, wherein said adjusting means comprises a third lever having one end connected to said other shoe and another end turnable about a predetermined axis, and an abutment provided on said third lever in the path of movement of said coupling device during application of braking force to the other end of said second lever.
Claim 4
Dependent Claim
64 words
Self-adjusting braking apparatus as defined in claim 2, wherein said coupling device comprises carrier means and a projection which is normally spaced from said abutment and is displaced with reference to said carrier means in response to engagement with said abutment during movement of the other end of said second lever relative to the other end of said first lever beyond said predetermined distance.
Claim 5
Dependent Claim
14 words
Self-adjusting braking apparatus as defined in claim 2, wherein said third lever is curved.
Claim 6
Dependent Claim
28 words
Self-adjusting braking apparatus as defined in claim 2, wherein said predetermined axis for the other end of said third lever is adjustable with reference to said fixed axis.
Claim 7
Dependent Claim
24 words
Self-adjusting braking apparatus as defined in claim 2, wherein the other ends of said first and third levers are turnable about a common axis.
Claim 8
Dependent Claim
24 words
Self-adjusting braking apparatus as defined in claim 1, wherein the one end of each of said levers is articulately connected with the respective shoe.
Claim 9
Dependent Claim
24 words
Self-adjusting braking apparatus as defined in claim 1, wherein said adjusting means comprises an abutment which is adjustable with reference to said coupling means.
Claim 10
Dependent Claim
176 words
An adjustable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus, for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending from one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, said second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling member, and means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and torsion springs for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said first coupling member.
Claim 11
Dependent Claim
176 words
An adjustable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus, for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending from one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, said second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling member, and means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and torsion springs for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said first coupling member.
Claim 12
Dependent Claim
204 words
An adjUstable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending from one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, said second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling member, and means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and means for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said carrier, said projection comprising stop means located between said nuts and arranged to terminate rotary movement of one of said nuts in response to movement of said projection toward the other nut.
Claim 13
Dependent Claim
204 words
An adjUstable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending from one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, said second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling member, and means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and means for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said carrier, said projection comprising stop means located between said nuts and arranged to terminate rotary movement of one of said nuts in response to movement of said projection toward the other nut.
Claim 14
Dependent Claim
25 words
A coupling device as defined in claim 9, further comprising means for biasing said projection away from the other end of said first coupling member.
Claim 15
Dependent Claim
15 words
A coupling device as defined in claim 10, wherein said stop means comprises a ring.
Claim 16
Dependent Claim
45 words
A coupling device as defined in claim 9, further comprising an annular bearing mounted in said carrier adjacent to one of said nuts, said bearing having a portion extending through the other end of said carrier and surrounding a portion of said second coupling member.
Claim 17
Dependent Claim
42 words
A coupling device as defined in claim 9, further comprising means provided in said carrier for biasing said projection away from said other end and means for limiting the extent of movement of said projection under the action of said biasing means.
Claim 18
Dependent Claim
33 words
A coupling device as defined in claim 2, wherein at least one of said nuts is provided with entraining means for rotating the other nut in response to rotation of said one nut.
Claim 19
Dependent Claim
197 words
An adjustable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending form one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, said second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling member, said projection comprising a female portion and said second coupling member further comprising an end portion reciprocably extending into said female portion, and means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and means for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said first coupling member.
Claim 20
Dependent Claim
197 words
An adjustable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending form one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, said second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling member, said projection comprising a female portion and said second coupling member further comprising an end portion reciprocably extending into said female portion, and means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and means for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said first coupling member.
Claim 21
Dependent Claim
224 words
An adjustable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending from one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, sAid second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling members, means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and means for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said first coupling member, an annular bearing mounted in said first coupling member adjacent to one of said nuts and having a portion extending through said other end of said first coupling member and surrounding a portion of said second coupling member, and sealing means interposed between said projection and said first coupling member.
Claim 22
Dependent Claim
224 words
An adjustable coupling device of variable length, particularly for connecting the levers for brakeshoes in a braking apparatus for rail-mounted vehicles, comprising a first coupling member constituting a hollow carrier having two ends, a projection reciprocably received in said first coupling member and extending from one end thereof, a second coupling member reciprocable with reference to said first coupling member and said projection, sAid second coupling member extending through the other end of said first coupling member and comprising an externally threaded portion in the interior of said first coupling members, means for moving one of said coupling members with reference to the other coupling member to thereby change the combined length of said coupling members in response to movement of said projection with reference to said first coupling member, said means for moving comprising a pair of nuts meshing with said externally threaded portion and means for rotating said nuts with reference to said externally threaded portion in response to movement of said projection toward the other end of said first coupling member, an annular bearing mounted in said first coupling member adjacent to one of said nuts and having a portion extending through said other end of said first coupling member and surrounding a portion of said second coupling member, and sealing means interposed between said projection and said first coupling member.
Claim 23
Dependent Claim
33 words
A coupling device as defined in claim 2, wherein said nuts are arranged to move toward the other end of said carrier in response to movement of said projection in the same direction.
Claim 24
Dependent Claim
94 words
A coupling device as defined in claim 2, further comprising means for biasing said projection to an outer end position and wherein said nuts are rotatable in a direction toward said other end of the carrier, the latter comprising stop means engaging one of said nuts upon movement of said carrier and said second coupling member in opposite directions to permit movement of said one nut away from said stop means whereby the one nut is free to rotate with reference to said externally threaded portion to return into abutment with said stop means.
References Cited (Backward Citations)
US3141861A
Cited
US3249183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |