A friction device and method for a wheel may include a backing plate and a friction material disposed on the backing plate to form a brake surface to engage a surface of the wheel. The friction material extends between a first end and a second end along a central longitudinal axis, and between a rim side and a flange side. The friction material may include an extended volume portion that includes one or more protrusions and/or recesses extending away from a longitudinal flange side of the friction material to engage the flange of the wheel. The method including engaging and disengaging a brake surface.
A friction device may include a backing plate connected with a friction material. The friction device may include a conditioning insert at least partially embedded within the friction material. The conditioning insert may include opposite first and second longitudinal sides that extend from the backing plate to the conditioning surface and opposite first and second lateral sides that extend from the backing plate to the conditioning surface. The first longitudinal side, the second longitudinal side, the first lateral side, and/or the second lateral side of the conditioning insert can include one or more protrusions extending away from the first longitudinal side, the second longitudinal side, the first lateral side, and/or the second lateral side and into the friction material.
A brake shoe includes a backing plate configured to interface with a brake head of a vehicle. The backing plate includes a main body and a flange attached to the main body and configured to align the brake shoe on a wheel of the vehicle. The brake shoe also includes a composition friction material disposed on the backing plate, which defines a brake surface for engaging the wheel. The brake shoe may have one or more dimensional characteristics for facilitating alignment of the brake shoe with the wheel, e.g., a ratio of a shortest horizontal distance to a shortest vertical distance of the brake shoe may be at least 1.07 and no more than 1.25, or a ratio of a length of the main body of the brake shoe to a length of the flange may be at least 1.3 and not more than 1.7.
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
B60B 17/00 - Wheels characterised by rail-engaging elements
B60B 21/08 - Rims characterised by having braking surfaces
F16D 49/00 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
A conditioning insert of a friction device includes a body having a conditioning surface configured to engage a wheel, opposite first and second sides intersecting the conditioning surface, and opposite third and fourth sides intersecting the conditioning surface. Each of the first and second sides extend from the third side to the fourth side. The body includes one or more of (a) a recess extending into one or more of the first side, the second side, the third side, or the fourth side and is configured to receive friction material of the friction device and/or (b) a protrusion extending out of the first side, the second side, the third side, or the fourth side and into the friction material of the friction device.
A friction device for a vehicle having a flanged wheel (with a wheel flange and wheel tread) includes a backing plate and a friction structure. The backing plate may interface with a brake actuator of the vehicle. The friction structure is attached to the backing plate and comprises a friction material; the friction structure has a longitudinal flange side, a longitudinal rim side, and two opposing ends, and defines a brake surface for engaging the flanged wheel for braking. The friction structure includes an extended volume portion of the friction material on the longitudinal flange side, which defines a flange contact region of the brake surface. The flange contact region may at least partially engage the flange and to align the friction device with the wheel tread, e.g., the flange contact region may be complementary in shape to at least part of the flange.
F16D 65/06 - Bands, shoes or padsPivots or supporting members therefor for externally-engaging brakes
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
F16D 69/00 - Friction liningsAttachment thereofSelection of coacting friction substances or surfaces
A method and a system of a friction device for a wheel may include a backing plate and a friction material disposed on the backing plate to form a brake surface to engage a surface of the wheel. The friction material extends between a first end and a second end along a central longitudinal axis, and between a rim side and a flange side. A void is disposed within the friction material and extends from the brake surface a distance into the friction material. The void forms an opening of the brake surface of the friction material.
A conditioning insert of a friction device includes a body having a conditioning surface configured to engage a wheel, opposite first and second sides intersecting the conditioning surface, and opposite third and fourth sides intersecting the conditioning surface. Each of the first and second sides extend from the third side to the fourth side. The body includes one or more of (a) a recess extending into one or more of the first side, the second side, the third side, or the fourth side and is configured to receive friction material of the friction device and/or (b) a protrusion extending out of the first side, the second side, the third side, or the fourth side and into the friction material of the friction device.
A friction device for a vehicle having a flanged wheel (with a wheel flange and wheel tread) includes a backing plate and a friction structure. The backing plate is configured to interface with a brake actuator of the vehicle. The friction structure is attached to the backing plate and comprises a friction material; the friction structure has a longitudinal flange side, a longitudinal rim side, and two opposing ends, and defines a brake surface for engaging the flanged wheel for braking. The friction structure includes an extended volume portion of the friction material on the longitudinal flange side, which defines a flange contact region of the brake surface. The flange contact region is configured to at least partially engage the flange and to align the friction device with the wheel tread, e.g., the flange contact region may be complementary in shape to at least part of the flange.
F16D 65/06 - Bands, shoes or padsPivots or supporting members therefor for externally-engaging brakes
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
A method and a system of a friction device for a wheel may include a backing plate and a friction material disposed on the backing plate to form a brake surface to engage a surface of the wheel. The friction material extends between a first end and a second end along a central longitudinal axis, and between a rim side and a flange side. A void is disposed within the friction material and extends from the brake surface a distance into the friction material. The void forms an opening of the brake surface of the friction material.
A brake shoe includes a backing plate configured to interface with a brake head of a vehicle. The backing plate includes a main body and a flange attached to the main body and configured to align the brake shoe on a wheel of the vehicle. The brake shoe also includes a composition friction material disposed on the backing plate, which defines a brake surface for engaging the wheel. The brake shoe may have one or more dimensional characteristics for facilitating alignment of the brake shoe with the wheel, e.g., a ratio of a shortest horizontal distance to a shortest vertical distance of the brake shoe may be at least 1.07 and no more than 1.25, or a ratio of a length of the main body of the brake shoe to a length of the flange may be at least 1.3 and not more than 1.7.
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
A brake shoe includes a backing plate configured to interface with a brake head of a vehicle. The backing plate includes a main body and a flange attached to the main body and configured to align the brake shoe on a wheel of the vehicle. The brake shoe also includes a composition friction material disposed on the backing plate, which defines a brake surface for engaging the wheel. The brake shoe may have one or more dimensional characteristics for facilitating alignment of the brake shoe with the wheel, e.g., a ratio of a shortest horizontal distance to a shortest vertical distance of the brake shoe may be at least 1.07 and no more than 1.25, or a ratio of a length of the main body of the brake shoe to a length of the flange may be at least 1.3 and not more than 1.7.
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
F16D 69/00 - Friction liningsAttachment thereofSelection of coacting friction substances or surfaces
The invention is directed to an insert for a backing plate assembly for a composition friction brake shoe. The insert is particularly useful in the formation of a universal brake shoe for use with a trolley car braking system. The insert includes a central member having a first and second set of attachment posts extending from the respective ends thereof. These first and second sets of attachment posts are adapted for securing a first and second backing plate strap, respectively, thereto. A key bridge extends through a back portion of the central member and is configured for attachment to a brake shoe. A flange guide support extends from a side portion of the insert and includes legs defining a channel that runs parallel to the insert. The flange guide support is adapted for contacting a wheel flange to align a brake shoe with the wheel during braking of the vehicle.
F16D 13/36 - Friction clutches with axially-movable clutching members with conical friction surfaces in which two or more axially-movable members are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
The invention is directed to an insert for a backing plate assembly for a composition friction brake shoe. The insert is particularly useful in the formation of a universal brake shoe for use with a trolley car braking system. The insert includes a central member having a first and second set of attachment posts extending from the respective ends thereof. These first and second sets of attachment posts are adapted for securing a first and second backing plate strap, respectively, thereto. A key bridge extends through a back portion of the central member and is configured for attachment to a brake shoe. A flange guide support extends from a side portion of the insert and includes legs defining a channel that runs parallel to the insert. The flange guide support is adapted for contacting a wheel flange to align a brake shoe with the wheel during braking of the vehicle.
A molded brake shoe formed of friction material with or without a metal backing. Along at least a portion of at least one side surface of the brake shoe there is a layer of the molded friction material reinforced with a fiber.
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
B61H 5/00 - Applications or arrangements of brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
A molded brake shoe formed of friction material with or without a metal backing. Along at least a portion of at least one side surface of the brake shoe there is a layer of the molded friction material reinforced with a fiber.
A molded brake shoe formed of friction material with or without a metal backing. Along at least a portion of at least one side surface of the brake shoe there is a layer of the molded friction material reinforced with a fiber.
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
F16D 65/04 - Bands, shoes or padsPivots or supporting members therefor
Disclosed is an end stabilized backing plate for an extended length brake shoe for use in a railway braking system. The backing plate includes an elongated main portion extending along a longitudinal axis. This main portion has a front face, a back face, a first end portion and an opposed second end portion. A first and second pair of tab members are provided on each of the first and second end portions. These tab members extend in a substantially perpendicular direction with respect to the main body and function to stabilize the end portions of the extended length brake shoe which extend beyond the length of a brake head and reduce and/or eliminate cracking of these end portions of the brake shoe. A method of stabilizing end portions of an extended length brake shoe is also disclosed.
F16D 65/092 - Bands, shoes or padsPivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
F16D 65/095 - Pivots or supporting members therefor
B61H 1/00 - Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
23.
End stabilization for brake shoes extending beyond the ends of the brake head
Disclosed is an end stabilized backing plate for an extended length brake shoe for use in a railway braking system. The backing plate includes an elongated main portion extending along a longitudinal axis. This main portion has a front face, a back face, a first end portion and an opposed second end portion. A first and second pair of tab members are provided on each of the first and second end portions. These tab members extend in a substantially perpendicular direction with respect to the main body and function to stabilize the end portions of the extended length brake shoe which extend beyond the length of a brake head and reduce and/or eliminate cracking of these end portions of the brake shoe. A method of stabilizing end portions of an extended length brake shoe is also disclosed.
A brake shoe formed of friction material for use without a metal backing plate. The brake shoe is defined by a friction surface (10) for bearing upon a wheel tread and an opposed back surface (12) for being placed in- contact with and secured to a brake head. The brake shoe has a reinforcing mesh (20)' defining a plurality of interstices positioned along the back surface of the brake shoe embedded in a molded friction material that is reinforced with a plurality of fibers. A keyway (1) is at least partially formed of the molded fiber reinforced friction material extending away from the back surface of the brake shoe.
A brake shoe without a metal backing has a metal insert comprising two spaced apart bodies (10,11), a connecting portion (13) having a back face adjacent to the back surface of the brake shoe, and two generally parallel radially-extending flanges (15) integral with the connecting portion. The parallel radially extending flanges (15) define a keyway, wherein when the brake shoe is emplaced on the brake head, the keyway extends through an opening provided in the brake head.
A brake shoe without a metal backing has a metal insert comprising two spaced apart bodies, a connecting portion having a back face adjacent to the back surface of the brake shoe, and two generally parallel radially extending flanges integral with the connecting portion. The parallel extensions define a keyway, wherein when the brake shoe is emplaced on the brake head, the keyway extends through an opening provided in the brake head.
A brake shoe without a metal backing has a metal insert (9) comprising a main body (10), two wing-like extensions (12/13) integral with, on opposite sides of and extending away from the main body having back faces adjacent to the back surface of the brake shoe, two generally parallel radially extending flanges (15/16) integral with the main body and/or the wing-like extensions. The parallel extension defines a keyway (17), wherein when the brake shoe is emplaced on the brake head, the keyway extends through an opening provided in the brake head.
