A brake caliper apparatus includes a caliper portion configured to be supported by a vehicle, a piston seal disposed in an annular cavity of the caliper portion, a piston disposed in a cylindrical recess in said caliper portion and having a cylindrical outer surface in sealing contact with the piston seal, the piston being movable within said cylindrical recess along an axial direction, a heat shield disposed at an axial end of the piston, and a sealing boot having a first end attached to the heat shield at an attachment portion of the heat shield and a second end engaged to the caliper portion at an engagement portion of the caliper portion, the piston seal and the engagement portion being on a common plane perpendicular to the axial direction.

A brake caliper apparatus includes a caliper portion configured to be supported by a vehicle, a piston seal disposed in an annular cavity of the caliper portion, a piston disposed in a cylindrical recess in said caliper portion and having a cylindrical outer surface in sealing contact with the piston seal, the piston being movable within said cylindrical recess along an axial direction, a heat shield disposed at an axial end of the piston, and a sealing boot having a first end attached to the heat shield at an attachment portion of the heat shield and a second end engaged to the caliper portion at an engagement portion of the caliper portion, the piston seal and the engagement portion being on a common plane perpendicular to the axial direction.

A brake caliper apparatus includes a caliper portion configured to be supported by a vehicle, a piston seal disposed in an annular cavity of the caliper portion, a piston disposed in a cylindrical recess in said caliper portion and having a cylindrical outer surface in sealing contact with the piston seal, the piston being movable within said cylindrical recess along an axial direction, a heat shield disposed at an axial end of the piston, and a sealing boot having a first end attached to the heat shield at an attachment portion of the heat shield and a second end engaged to the caliper portion at an engagement portion of the caliper portion, the piston seal and the engagement portion being on a common plane perpendicular to the axial direction.

A brake caliper apparatus includes a caliper portion configured to be supported by a vehicle, a piston seal disposed in an annular cavity of the caliper portion, a piston disposed in a cylindrical recess in said caliper portion and having a cylindrical outer surface in sealing contact with the piston seal, the piston being movable within said cylindrical recess along an axial direction, a heat shield disposed at an axial end of the piston, and a sealing boot having a first end attached to the heat shield at an attachment portion of the heat shield and a second end engaged to the caliper portion at an engagement portion of the caliper portion, the piston seal and the engagement portion being on a common plane perpendicular to the axial direction.

A gasket improves sealing performance. A gasket to be placed in an annular groove includes an annular base to be placed in the groove, and a plurality of protrusions arranged at intervals on the base in a circumferential direction of the base. The protrusions protrude from the base to face side surfaces of the groove and have support surfaces with curvatures corresponding to curvatures of the side surfaces of the groove. Each protrusion has a length in the circumferential direction greater than an interval between facing ends of adjacent ones of the protrusions in the circumferential direction.

A gasket improves sealing performance. A gasket to be placed in an annular groove includes an annular base to be placed in the groove, and a plurality of protrusions arranged at intervals on the base in a circumferential direction of the base. The protrusions protrude from the base to face side surfaces of the groove and have support surfaces with curvatures corresponding to curvatures of the side surfaces of the groove. Each protrusion has a length in the circumferential direction greater than an interval between facing ends of adjacent ones of the protrusions in the circumferential direction.

The present invention relates to a fluid control system comprising a first chamber, a second chamber and a passage extending between said upstream chamber and said downstream chamber. An elongate valve spool core (8) is moveable arranged in passage in a fluid-tight and snug-fit manner, the spool core containing a groove (9). An actuator (18) typically connected to the elongated valve spool core to move the valve spool core in relation passage. Thereby a flow rate of a fluid flowing from the upstream chamber to the downstream chamber may be changed by moving the spool core relative to the passage to increase an orifice area.

A boot assembly for a joint includes a boot and a boot can coupled to the boot at a connecting portion. The boot can includes a mounting portion including a flange having an inner surface and a retainer. The retainer is connected to the flange at a first location and is separate from the flange at a second location spaced from the first location. The retainer includes an inward portion spaced from the first location, and the inward portion is arranged closer to the axis than is the inner surface of the retainer between the first location and a midpoint of the retainer. The inner surface of the retainer is not at a constant angle relative to the axis along the length of the retainer.

A boot assembly for a joint includes a boot and a boot can coupled to the boot at a connecting portion. The boot can includes a mounting portion including a flange having an inner surface and a retainer. The retainer is connected to the flange at a first location and is separate from the flange at a second location spaced from the first location. The retainer includes an inward portion spaced from the first location, and the inward portion is arranged closer to the axis than is the inner surface of the retainer between the first location and a midpoint of the retainer. The inner surface of the retainer is not at a constant angle relative to the axis along the length of the retainer.

A spring seal for a joint assembly pivotally joining a lever arm to a machine frame includes an annular body having a W-shaped cross section. The W-shaped cross section includes a first cantilevered arm, a parallel and spaced apart second cantilevered arm, and a spring leg joining the first and second cantilevered arms. The spring seal is disposed between a bearing surface on the lever arm and a lug on the frame. The W-shaped cross section of the spring seal can collapse and relax to accommodate movement between the lever arm and the frame lug. A second spring seal can be disposed between a second bearing surface on the lever arm and a second frame lug opposite the first lug.