Power brake reaction mechanism

Claim 2

A reaction mechanism for use in a power brake unit including an actuating member and an output member, said reaction mechanism including, in combination, a housing having internal walls defining a cavity, the opposite ends of said cavity including rectangular portions, a pair of rectangular levers each having substantially the same width as the rectangular portions of the cavity defined by said housing, each lever fitting in and being supported by said internal walls defining the rectangular portions of said cavity, thE adjacent ends of said levers limiting movement of said levers relative to each other and to said housing, said levers being engageable with said actuating member, a bridge member disposed adjacent said levers and engaging said output member, said bridge member being adapted to engage each of said levers intermediate the ends thereof, and resilient means biasing said levers in a direction away from said actuating member and toward said bridge member.

Claim 3

The combination as set forth in claim 1, wherein the opposing surfaces on each of said levers are symmetrical, parallel and identical to each other.

Claim 4

In a power brake unit having a housing and a pressure-responsive movable wall forming therewith chambers on opposite sides of said wall, control means controlling the pressure differential on opposite sides of said wall, said control means including a hub member movable with said wall, a manually movable actuating member supported by said hub member, and an output member movable in response to movement of said wall, said hub member having internal walls defining a cavity, the opposite ends of said cavity including rectangular portions, a pair of rectangular levers each having substantially the same width as the rectangular portions of the cavity defined by said hub member, each lever fitting in and being supported by said walls defining the rectangular portions of said cavity, the adjacent ends of said levers limiting movement of said levers relative to each other and to said hub member, said levers resisting movement of said actuating member in a substantially direct ratio to the force developed by said wall, and a bridge member interposed between said output member and said lever members, said bridge member being adapted to engage each of said levers intermediate the ends thereof, and resilient means biasing said levers in a direction away from said actuating member and toward said bridge member.

Claim 5

In a power brake unit having a housing and a pressure-responsive movable wall forming therewith chambers on opposite sides of said wall, control means controlling the pressure differential on opposite sides of said wall, said control means including a hub member movable with said wall, a manually movable actuating member supported by said hub member, and an output member movable in response to movement of said wall, said hub member having internal walls defining a cavity, the opposite ends of said cavity including rectangular portions, a pair of rectangular levers each having substantially the same width as the rectangular portions of the cavity defined by said hub member, each lever fitting in and being supported by said walls defining the rectangular portions of said cavity, the adjacent ends of said levers limiting movement of said levers relative to each other and to said hub member, said levers resisting movement of said actuating member in a substantially direct ratio to the force developed by said wall, and a bridge member interposed between said output member and said lever members, said bridge member being adapted to engage each of said levers intermediate the ends thereof, and resilient means biasing said levers in a direction away from said actuating member and toward said bridge member.

Claim 6

The combination as set forth in claim 3 wherein the opposing surfaces on each of said levers and on said bridge member are symmetrical, parallel and identical to each other.