Combination service and parking brake

Claim 2

A combination service and parking brake for a machine having a rotatable member comprising rotor disc means connectable with said rotatable member, stator disc means including first and second actuating disc means for actuating the entire rotor disc means for energizing the brake structure, said rotor disc means including a rotor disc disposed between and engageable with both of said first and second actuating disc assemblies, a first actuating member for actuating said first actuating disc means during service operation of the machine, and a second actuating member for actuating said second actuating disc means during parking.

Claim 3

A combination service and parking brake structure, as defined in claim 1, which comprises linkage means including a first portion including said first actuating member and a second portion including said second actuating member, and separatly manually operable operation members respectively connected with said first and second portions.

Claim 4

A combination service and parking brake structure for a machine such as a tractor having a first and second rotatable members to be controlled, comprising first and second brake units respectively adapted to be associated with said first and second rotatable members, each of said units including housing means presenting opposed axially spaced apart friction surfaces and a disc pack disposed therebetween, each of said disc packs including first and second actuating and stator disc assemblies and a rotor disc disposed between and engageable with both of said assemblies and connectable with the rotatable member to be controlled, independently operable first and second service brake actuating members respectively and independently operatively connected with the first actuating disc assembly of said first and second brake units for independently energizing the entire disc pack of said first and second brake units, and a third actuating member operatively interconnected with said second actuating disc assembly of said first and second brake units for simultaneously energizing the Entire disc pack of said first and second brake units.

Claim 5

A combination service and parking brake structure for a machine such as a tractor having a first and second rotatable members to be controlled, comprising first and second brake units respectively adapted to be associated with said first and second rotatable members, each of said units including housing means presenting opposed axially spaced apart friction surfaces and a disc pack disposed therebetween, each of said disc packs including first and second actuating and stator disc assemblies and a rotor disc disposed between and engageable with both of said assemblies and connectable with the rotatable member to be controlled, independently operable first and second service brake actuating members respectively and independently operatively connected with the first actuating disc assembly of said first and second brake units for independently energizing the entire disc pack of said first and second brake units, and a third actuating member operatively interconnected with said second actuating disc assembly of said first and second brake units for simultaneously energizing the Entire disc pack of said first and second brake units.

Claim 6

A brake structure as defined in claim 3, wherein each of said actuating disc assemblies includes a pair of oppositely relatively rotatable actuating discs and cam means therebetween for spreading the actuating discs upon relative rotation therebetween, and torque absorbing means engageable with said actuating discs for limiting rotation thereof.

Claim 7

A combination service and parking brake structure for a machine having a rotatable member to be controlled, comprising rotor means connectable with said rotatable member for rotation therewith, separate and independently operable first and second combined actuating and stator means simultaneously engageable with the rotor means when the brake is energized, first actuating means interconnected with said first combined actuating and stator means for energizing the brake structure during service operation of the machine, and second actuating means operable separately and independently of said first actuating means and operatively interconnected with said second combined actuating and stator means for energizing the brake structure during parking of the machine.

Claim 8

A combination service and parking brake structure for a machine having a rotatable member to be controlled, comprising rotor means connectable with said rotatable member for rotation therewith, separate and independently operable first and second combined actuating and stator means simultaneously engageable with the rotor means when the brake is energized, first actuating means interconnected with said first combined actuating and stator means for energizing the brake structure during service operation of the machine, and second actuating means operable separately and independently of said first actuating means and operatively interconnected with said second combined actuating and stator means for energizing the brake structure during parking of the machine.

Claim 9

A combination service and parking brake as defined in claim 5, wherein each of said combined actuating and stator means comprises a pair of opposing relatively oppositely rotatable discs and cam means therebetween for spreading the discs upon relative rotation thereof, torque means for limiting rotation of said discs, and first and second actuating means comprising independently operable linkage mechanisms respectively interconnected with said first and second disc assemblies.

Claim 10

A combination service and parking brake structure, as defined in claim 6, wherein said rotor means comprises a plurality of rotor discs respectively disposed at opposite ends of and between said actuating disc assemblies.