Disc brake

Claim 2

A friction device for use with a rotatable disc comprising a pair of relatively movable members extending about substantially a chordal portion of said disc, opposed mounting means on one of said members and adjacent to one side of said disc for connection with a nonrotatable vehicle mounting portion, a pair of opposed anchors on said one member adjacent to said disc one side, a friction element for frictional engagement with said one disc side and embraced by said anchors, actuating means movable on said one member and drivingly engaged between the other of said memberS and said friction element, another friction element connected in torque transmitting engagement with said other member for frictional engagement with the other side of said disc, said actuating means being movable to drive said first named friction element and said other member in opposite directions and frictionally engage said first named and other friction elements with said disc one and other sides, respectively, the torque of the frictional engagement of said first named friction element being transferred to one of said anchors, and anchor means connected between said members adjacent to said disc other side for transmitting the torque of the frictional engagement of said other friction element to said mounting means.

Claim 3

A friction device according to claim 1, wherein said anchor means includes an anchor pin extending through said members for transferring the torque of said other friction element from said other member to said one member.

Claim 4

A friction device according to claim 2, comprising a driving connection between said other member and said anchor pin, said other member and anchor in being concertedly movable in response to the actuation of said actuating means, and said anchor pin being slidably received in said one member.

Claim 5

A friction device according to claim 3, comprising slot means in said one member adjacent to said disc other side, said anchor pin being slidable in said slot means in torque transferring relation with said one member.

Claim 6

A friction device according to claim 4, wherein said slot means includes opposed sidewalls, and opposed flats on said anchor pin respectively slidably engaged with said sidewalls for transferring the torque of said other friction element to said one member.

Claim 7

A friction device according to claim 3, comprising aperture means in said other member adjacent to said disc other side including opposed sidewalls, said anchor pin extending through said aperture means, and opposed flats on said anchor pin and engaged with said sidewalls to substantially obviate rotation of said anchor pin relative to said members.

Claim 8

A friction device according to claim 6, comprising slot means in said one member adjacent to said disc other side and aligned with said aperture means, said anchor pin being slidably received in said slot means in torque transferring relation with said one member.

Claim 9

A friction device according to claim 7, wherein said slot means include opposed sidewalls, said opposed flats also being slidable on said sidewalls in torque transferring engagement therewith, respectively.

Claim 10

A friction device according to claim 7, wherein said slot means include opposed sidewalls, said opposed slots being slidable in said sidewalls in torque transferring engagement therewith, a head portion on said anchor pin and slidable on said one member about said slot means, a shoulder on said anchor pin and predeterminately spaced from said head portion, and means connected between said anchor pin and said other member urging said other member toward engagement with said shoulder and urging said head portion toward engagement with said one member.

Claim 11

A friction device according to claim 4 comprising a head portion on said anchor pin and slidable on said one member about said slot means, a shoulder on said anchor pin and predeterminately spaced from said head portion, and means connected between said anchor pin and said other member urging said other member toward engagement with said shoulder and urging said head portion toward engagement with said one member.

Claim 12

A friction device according to claim 1, comprising stepped aperture means in said other member on said disc other side, the larger of said stepped aperture means including opposed axially extending sidewalls, slot means in said one member substantially in vertical alignment with said aperture means and including other opposed axially extending sidewalls, said anchor means including an anchor pin extending through said aperture means and slot means, a head Portion on said anchor pin slidable on said one member about said slot means, opposed flats on said anchor pin, said opposed flats being slidably engaged with said other opposed sidewalls to transfer the torque of said other friction element to said one member, said opposed flats also being engaged with said first named opposed sidewalls to prevent rotation of said anchor pin relative to said members, a shoulder on said anchor pin predeterminately spaced from said head portion, and a reduced shank portion on said anchor pin extending through the smaller of said stepped aperture means and having a threaded free end portion adjacent to said other member, and other means threadedly received on said free end portion and drivingly connected with said other member to urge said other member toward engagement with said shoulder and urge said head portion toward engagement with said one member.

Claim 13

A friction device according to claim 1, wherein said one member includes a support plate having a connecting portion adjacent to said disc other side, opposed arms connected with said connecting portion and extending across the periphery of said disc toward said disc one side, said mounting means and anchors being respectively connected with said arms, opposed guide means on said arms embracing said actuating means for guiding engagement therewith, said actuating means being movable in said guide means and said arms to energize said friction device, and slot means in said connecting portion, said anchor means being slidable in said slot means to transmit the torque of said other friction element to said support plate.

Claim 14

A friction device according to claim 1, wherein said other member includes a frame adjacent to said disc other side, said other friction element being connected with said frame, opposed end portions respectively connected with said frame and extending over the periphery of said disc, a reaction portion on said disc one side connected between said end portions, said actuating means being drivingly engaged between said first named friction element and said reaction portion, and aperture means in said frame, said anchor means being received in said aperture means in torque transferring engagement with said frame.

Claim 15

A friction device according to claim 1, wherein said one member includes a support plate having a connecting portion adjacent to said disc other side, opposed arms connected with said connecting portion and extending across the periphery of said disc toward said one disc side, said mounting means and anchor means being respectively connected with said arms, opposed guide means on said arms embracing said actuating means for guiding engagement therewith, said actuating means being movable on said guide means to energize said friction device, and slot means in said connecting portion, said other member including a frame portion adjacent to said disc other side, said other friction element being connected in torque transmitting engagement with said frame portion, opposed end portions respectively connected with said frame portion and extending over said disc periphery, a reaction portion on said disc one side connected between said end portions, said actuating means being drivingly engaged between said first named friction element and said reaction portion, and aperture means in said frame portion and substantially aligned with said slot means, said anchor means being received in said aperture means in torque transferring engagement with said frame portion and slidable in said slot means in torque transferring engagement with said support plate.

Claim 16

A friction device for use with a rotatable disc comprising a support plate extending about substantially a chordal portion of said disc including a portion adjacent to one side of said disc, mounting means on said support plate adjacent to the other side of said disc for connection with a nonrotatable vehicle mounting portion, and a pair of opposed anchor means on said support plate adjacent to said disc other side, a friction element for frictional engagement with said disc other side and slidably engaged between said anchor means, a closed loop member surrounding a chordal portion of said disc and movable on said support plate including fluid pressure responsive actuating means drivingly engaged between said member and friction element, and another friction element connected to torque transferring engagement with said member adjacent to said disc one side for frictional engagement therewith, said actuating means being responsive to fluid pressure applied thereto to move said first named friction element in one direction into frictional engagement with said disc other side and to move said member in the opposite direction to frictionally engage said other friction member with said disc one side, the torque of the frictional engagement of said first named friction element being transferred directly to one of said anchor means, and third anchor means connected between said member and said support plate portion adjacent to said disc one side for transmitting the torque of the frictional engagement of said other friction element from said member through said support plate directly to said mounting means.

Claim 17

A friction device for use with a rotatable disc comprising a support plate extending about substantially a chordal portion of said disc including a portion adjacent to one side of said disc, mounting means on said support plate adjacent to the other side of said disc for connection with a nonrotatable vehicle mounting portion, and a pair of opposed anchor means on said support plate adjacent to said disc other side, a friction element for frictional engagement with said disc other side and slidably engaged between said anchor means, a closed loop member surrounding a chordal portion of said disc and movable on said support plate including fluid pressure responsive actuating means drivingly engaged between said member and friction element, and another friction element connected to torque transferring engagement with said member adjacent to said disc one side for frictional engagement therewith, said actuating means being responsive to fluid pressure applied thereto to move said first named friction element in one direction into frictional engagement with said disc other side and to move said member in the opposite direction to frictionally engage said other friction member with said disc one side, the torque of the frictional engagement of said first named friction element being transferred directly to one of said anchor means, and third anchor means connected between said member and said support plate portion adjacent to said disc one side for transmitting the torque of the frictional engagement of said other friction element from said member through said support plate directly to said mounting means.

Claim 18

A disc brake for use with a rotatable disc comprising support means, a pair of friction elements adjacent to the opposed sides of said disc for frictional engagement therewith, other means movable on said support means including actuating means on one side of said disc for urging one of said friction elements into engagement with said one disc side and frame means on the other side of said disc for urging the other of said friction elements into engagement with said disc other side, a pair of aperture means in said actuating means, a pair of holding means extending across the periphery of said disc and engaging said friction elements to limit displacement movement of at least one of said friction elements radially of said disc, opposed end portions on said holding means, one of the end portions of said holding means being axially and rotatably movable in said aperture means, the other end portions of said holding means being displaced in a plane substantially normal to those of said one end portions, slot means in said frame means for engagement with said other end portion to limit axial displacement of said holding means, said holding means being rotatable in said aperture means toward a position engaging said other end portions in said slot means, and other means removable secured to said frame means and engaged with said other end portions to maintain said other end portions against rotative displacement from engagement with said slot means.

Claim 19

A disc brake for use with a rotatable disc comprising support means, a pair of friction elements adjacent to the opposed sides of said disc for frictional engagement therewith, other means movable on said support means including actuating means on one side of said disc for urging one of said friction elements into engagement with said one disc side and frame means on the other side of said disc for urging the other of said friction elements into engagement with said disc other side, a pair of aperture means in said actuating means, a pair of holding means extending across the periphery of said disc and engaging said friction elements to limit displacement movement of at least one of said friction elements radially of said disc, opposed end portions on said holding means, one of the end portions of said holding means being axially and rotatably movable in said aperture means, the other end portions of said holding means being displaced in a plane substantially normal to those of said one end portions, slot means in said frame means for engagement with said other end portion to limit axial displacement of said holding means, said holding means being rotatable in said aperture means toward a position engaging said other end portions in said slot means, and other means removable secured to said frame means and engaged with said other end portions to maintain said other end portions against rotative displacement from engagement with said slot means.

Claim 20

A disc brake according to claim 16, comprising a pair of recess means in said other means, said other end portions extending through said recess means.

Claim 21

A disc brake according to claim 16, comprising first and second pairs of opposed groove means in said friction elements, respectively, said holding means being received in said first and second pairs of groove means in engagement with said friction elements to limit displacement movement of said one friction element radially of said disc, respectively, a recess in said frame means, the other of said friction elements being received in said recess, and a pair of abutment means on said holding means for engagement with said other friction element about one of said first and second pairs of groove means to prevent the displacement thereof from said recess, said abutment means being rotatable with said holding means toward positions aligned with said one of said first and second pairs of groove means to permit axial displacement movement of said holding means therethrough.

Claim 22

A friction device for use with a rotatable disc comprising support means and movable means each extending substantially about a chordal sector of said disc, said support means being mounted adjacent to one of the opposed sides of said disc and said movable means being axially movable relative to saiD disc on said support means, at least one friction member mounted in torque transfer relation with said movable means and movable therewith toward frictional engagement with the other of the opposed sides of said disc, and anchor means connected between said support means and movable means adjacent to said disc other opposed side for transmitting the torque of the frictional engagement between said one friction member and said disc other opposed side from said movable means to said support means.

Claim 23

A friction device for use with a rotatable disc comprising support means and movable means each extending substantially about a chordal sector of said disc, said support means being mounted adjacent to one of the opposed sides of said disc and said movable means being axially movable relative to saiD disc on said support means, at least one friction member mounted in torque transfer relation with said movable means and movable therewith toward frictional engagement with the other of the opposed sides of said disc, and anchor means connected between said support means and movable means adjacent to said disc other opposed side for transmitting the torque of the frictional engagement between said one friction member and said disc other opposed side from said movable means to said support means.

Claim 24

A friction device for use with a rotatable disc comprising support means and movable means each extending substantially about a chordal sector of said disc, said support means being mounted adjacent to one of the opposed sides of said disc and said movable means being movable on said support means, a pair of friction members for frictional engagement with said disc opposed sides, respectively, said movable means including an actuator portion and another portion drivingly engaged with said friction members to urge said friction members into frictional engagement with said disc opposed sides upon the actuation of said actuator portion, respectively, and anchor means connected between said support and movable means adjacent to the other side of said disc to transfer to said support means the torque of frictional engagement transmitted to said movable means from the friction member engaged with said disc other side.

Claim 25

A friction device for use with a rotatable disc comprising support means and movable means each extending substantially about a chordal sector of said disc, said support means being mounted adjacent to one of the opposed sides of said disc and said movable means being movable on said support means, a pair of friction members for frictional engagement with said disc opposed sides, respectively, said movable means including an actuator portion and another portion drivingly engaged with said friction members to urge said friction members into frictional engagement with said disc opposed sides upon the actuation of said actuator portion, respectively, and anchor means connected between said support and movable means adjacent to the other side of said disc to transfer to said support means the torque of frictional engagement transmitted to said movable means from the friction member engaged with said disc other side.

Claim 26

A friction device for use with a rotatable disc comprising support means and movable means each extending substantially about a chordal sector of said disc, said support means being mounted adjacent to one of the opposed sides of said disc and said movable means being axially movable relative to said disc on said support means, a pair of friction members for frictional engagement with said disc opposed sides, said movable means including an actuator portion and another portion drivingly engaged with said friction members to effect movement thereof into frictional engagement with said disc opposed sides upon the actuation of said actuator portion, respectively, means for transmitting the torque of frictional engagement between one of said friction members and the other of the opposed sides of said disc to said movable means, and other means connected with one of said support means and movable means and in anchoring engagement with the other of said support means and movable means adjacent to said disc other opposed side for transmitting the torque of friction engagement from said movable means to said support means.

Claim 27

A friction device for use with a rotatable disc comprising support means and movable means each extending substantially about a chordal sector of said disc, said support means being mounted adjacent to one of the opposed sides of said disc and said movable means being axially movable relative to said disc on said support means, a pair of friction members for frictional engagement with said disc opposed sides, said movable means including an actuator portion and another portion drivingly engaged with said friction members to effect movement thereof into frictional engagement with said disc opposed sides upon the actuation of said actuator portion, respectively, means for transmitting the torque of frictional engagement between one of said friction members and the other of the opposed sides of said disc to said movable means, and other means connected with one of said support means and movable means and in anchoring engagement with the other of said support means and movable means adjacent to said disc other opposed side for transmitting the torque of friction engagement from said movable means to said support means.

Claim 28

A brake for use with a rotatable disc comprising support means adapted to be mounted adjacent to one of the opposed sides of said disc, a pair of brake shoes for friction engagement with said disc opposed sides, means defining a closed loop substantially about a chordal sector of said disc and axially movable on said support means for urging said brake shoes into frictional engagement with said disc opposed sides, at least one guide means extending across the periphery of said disc and engaged with said brake shoes including opposed end portions, one of said end portions being movably connected against displacement with said loop means adjacent to said disc one opposed side, the other of said end portions extending generally in a plane different that that of said one end portion, slot means in said loop means adjacent to the other of the opposed sides of said disc, said one end portion being rotatable in said loop means adjacent said disc one opposed side toward a position engaging said other end portion in said slot means, and other means connected between loop means adjacent to said disc other opposed side and said other end portion to maintain said other end portion against rotative displacement from said slot means.

Claim 29

A brake for use with a rotatable disc comprising support means adapted to be mounted adjacent to one of the opposed sides of said disc, a pair of brake shoes for friction engagement with said disc opposed sides, means defining a closed loop substantially about a chordal sector of said disc and axially movable on said support means for urging said brake shoes into frictional engagement with said disc opposed sides, at least one guide means extending across the periphery of said disc and engaged with said brake shoes including opposed end portions, one of said end portions being movably connected against displacement with said loop means adjacent to said disc one opposed side, the other of said end portions extending generally in a plane different that that of said one end portion, slot means in said loop means adjacent to the other of the opposed sides of said disc, said one end portion being rotatable in said loop means adjacent said disc one opposed side toward a position engaging said other end portion in said slot means, and other means connected between loop means adjacent to said disc other opposed side and said other end portion to maintain said other end portion against rotative displacement from said slot means.

Claim 30

A brake according to claim 22, wherein said loop means includes an actuator portion and an opposed member respectively adjacent to said disc one and other opposed sides and engaged with said brake shoes to effect the moVement thereof into frictional engagement with said disc opposed sides upon the actuation of said actuator portion, said one end portion of said guide means being axially and rotatably received in said actuator portion.

Claim 31

A brake according to claim 23, comprising aperture means in said actuator portion, said one end portion of said guide means being axially and rotatably movable in said aperture means.

Claim 32

A brake according to claim 24, comprising a pair of groove means in said brake shoes, respectively, said guide means including an intermediate portion integrally interconnected between said opposed end portions and received in guiding and displacement preventing engagement with said groove means.

Claim 33

A brake according to claim 24, comprising other slot means in said other means and positioned in overlaying relation with said first named slot means when said other means is connected with said loop means, said other end portion extending through said other slot means in rotative displacement preventing engagement therewith into said first named slot means.

Claim 34

A brake according to claim 22, comprising groove means in each of said brake shoes, said guide means being received in said groove means.

Claim 35

A brake according to claim 22, wherein said other means includes other slot means normally positioned in overlaying relation with said first named slot means, said other end portion extending through said other slot means into said first named slot means.

Claim 36

A brake according to claim 22, comprising extension means on said guide means spaced from said other end portion and normally engaged with one of said brake shoes adjacent to said disc other opposed sides to prevent movement of said one brake shoe relative to said loop means toward said disc other opposed side.