Disc brake

Claim 2

A disc brake comprising: a. a rotatable disc for mounting upon a rotating object, said disc having a flat friction surface on at least one side thereof; b. support means adjacent the disc; c. an arm member having one part generally parallel to and adjacent the flat friction surface of said disc, with a resilient portion extending at an acute angle relative to said part of the member on the side thereof opposite the disc with the end of said portion pivotally connected to said support; d. friction means facing the flat friction surface of the disc in spaced relation thereto and attached to the arm member; e. means for moving the arm member in a direction which increases the angularity of said resilient portion and which is substantially in the direction of rotation of the disc to thereby engage the friction means with the disc whereby the rotation of the disc will increase the pressure of the friction means against the friction surface of the disc.

Claim 3

The assembly in claim 1 wherein: a. the disc has a flat friction surface on each side; b. there are two arm members, one on either side of the disc, each provided with friction means; and, c. the arm member moving means is attached to both members.

Claim 4

The assembly in claim 2 wherein the resilient portion of each arm member is an integral outwardly extending portion thereof.

Claim 5

The assembly in claim 3 wherein the support comprises a rigid nonrotatable body having a generally U-shaped cross section with an outwardly extending flange at an open end.

Claim 6

The assembly in claim 4 wherein said support further has an end plate at a closed end which is opposite said open end and also has portions extending opposite the sides of the disc having the frictional surfaces.

Claim 7

The assembly in claim 4 wherein the support has portions extending on both sides of the disc.

Claim 8

The assembly in claim 3 wherein the length of the integral outwardly extending portion of each arm member is less than that of the remaining portion of the arm member.

Claim 9

The assembly in claim 7 wherein the arm member comprises a flat spring.

Claim 10

The assembly in claim 3 wherein the two arm members are connected at the ends opposite the integral outwardly extending portions.

Claim 11

The assembly in claim 3 wherein the friction means comprises a friction lining pad removably attached to the arm member.

Claim 12

The assembly in claim 3 wherein the friction means is movably mounted on the part of the arm that is generally parallel to the disc and adjacent the location of the said integral portion.

Claim 13

The assembly in claim 3 wherein a friction lining pad is rockably mounted on the part of each arm that is generally parallel to the disc and adjacent the area of maximum curvature defined by the integral outwardly extending portion.

Claim 14

The assembly in claim 10 wherein each friction lining pad is rockably mounted on each arm in a manner such that the pads will self align to small angular deviations of the arm members relative to the disc.

Claim 15

The assembly in claim 13 wherein the friction lining pad is a body having a substantially rectangular shape, the body having a projection on one side extending from one edge to the opposite edge and substantially parallel to the remaining edges on that side, the body also having a securing clip attached to an edge having a projection and extending along the same side substantially parallEl to the projection and spatially arranged therewith to define an L-shaped slot for reception of the arm adjacent its connection with the integral portion, the body also having a friction lining mounted on the side opposite the side defining the L-shaped slot.

Claim 16

A disc brake adapted for use upon a rotatable body having an annular friction surface comprising: a. a rigid nonrotatable support adjacent the annular friction surface having a portion extending opposite the friction surface; b. a spring arm extending generally parallel to and opposite the friction surface, one end of the arm having an integral outwardly extending portion at an acute angle to the outer side thereof, the free end of said integral portion being pivotally attached to the supporting body; c. a friction lining pad attached to the side of the spring arm adjacent to and facing the friction surface and supported in spaced relation thereto; d. means for moving the arm in a direction which increases the angularity of the integral outwardly extending portion and which is substantially in the direction of rotation of the rotating body to thereby engage the friction lining pad with the friction surface of the rotating body whereby the rotation of the rotating body will increase the pressure of the friction pad against the friction surface of the rotating body.

Claim 17

A disc brake adapted for use upon a rotatable body having an annular friction surface comprising: a. a rigid nonrotatable support adjacent the annular friction surface having a portion extending opposite the friction surface; b. a spring arm extending generally parallel to and opposite the friction surface, one end of the arm having an integral outwardly extending portion at an acute angle to the outer side thereof, the free end of said integral portion being pivotally attached to the supporting body; c. a friction lining pad attached to the side of the spring arm adjacent to and facing the friction surface and supported in spaced relation thereto; d. means for moving the arm in a direction which increases the angularity of the integral outwardly extending portion and which is substantially in the direction of rotation of the rotating body to thereby engage the friction lining pad with the friction surface of the rotating body whereby the rotation of the rotating body will increase the pressure of the friction pad against the friction surface of the rotating body.

Claim 18

The assembly in claim 2 wherein the resilient portion extending at an acute angle relative to the part of each arm member which is parallel to the disc comprises a wire spring connected to the arm member and mounted on the supporting body to provide swinging movement of the arm member away from the disc.

Claim 19

The assembly in claim 16 wherein the friction means comprises a friction lining pad adhered to the arm member.

Claim 20

The assembly in claim 17 wherein each wire spring comprise a pair of spaced portions fastened to an arm member at spaced-apart positions for guiding the movement of the arm member whereby each friction lining pad is evenly pressed against a friction surface of the disc during braking operation.

Claim 21

The assembly in claim 18 wherein the ends of each pair of spaced portions of each spring member are bent inwardly for pivotal engagement of the edges of a friction pad.

Claim 22

The assembly in claim 16 wherein each spring connected to each arm member comprises an integral loop portion removably mounted on the supporting body for swinging movement of the arm member relative to the disc.

Claim 23

The assembly in claim 20 wherein the supporting body comprises a brake frame extending around the edges of the disc and having an outwardly extending flange on which the two wire springs are mounted.

Claim 24

The assembly in claim 2 wherein the arm members extend in a direction substantially tangentially to the disc to a position beyond the disc for connection to a cross member, the arm members having openings for receiving the cross member, the cross member receiving a tension applying member for applying braking force equally to the arm members whereby the movement of the friction means is substantially the same for equal braking engagement of the friction means with the friction surface of the disc.

Claim 25

The assembly in claim 22 wherein the cross member consists of a U-shaped bracket having flanges overlying the sides of the arm members with the surfaces of the flanges adjacent the arm members being smooth to permit self-alignment of said arm members with said friction surfaces upon wear of said friction members during the life of the brake.

Claim 26

The assembly in claim 23 wherein the friction means comprises a friction lining pad adhered to each arm member.