Brake actuator fastener assembly

A brake actuator adapted for use with an air motor of the type including a motor casing and a piston rod projecting from said casing and having a threaded free end portion;

• said actuator comprising:
• A. an actuator housing defining a first opening, and a second opening spaced from said first opening;
• B. attachment means adjacent said first opening adapted to coact with attachment means on the casing of the associated air motor to securedly assemble the casing to said housing in a position closing said first opening;
• C. an actuator mechanism positioned interiorly of said housing and including:
• 1. a first actuator member mounted within said housing for reciprocal brake apply and release movement and having a free end portion disposed adjacent said first opening;
• and
• 2. a second actuator member mounted within said housing for reciprocal brake apply and release movement in response to corresponding movement of said first actuator member and having a free end portion disposed adjacent said second opening and adapted to actuate suitable braking elements to perform the braking function;
• and
• D. fastener means carried by said free end portion of said first actuator member and adapted to operate to ratchedly receive the threaded free end portion of the piston rod of the associated air motor in response to generally linear movement of the air motor relative to said housing from a pre-assembly position in which it is adjacent but spaced from said first opening, with the threaded free end portion of its piston rod positioned adjacent said free end portion of said first actuator member, to its securedly assembled position closing said first opening, whereby to secure the free end portion of the piston rod to said free end portion of said first actuator member.

A brake actuator adapted for use with an air motor of the type including a motor casing and a piston rod projecting from said casing and having a threaded free end portion;

• said actuator comprising:
• A. an actuator housing defining an opening providing access to the interior of said housing;
• B. attachment means on said housing adjacent said opening adapted to coact with attachment means on the casing of the associated air motor to securedly assemble the casing to said housing in a position closing said opening;
• C. an actuator mechanism positioned interiorly of said housing and including:
• 1. a tappet mounted interiorly of said housing for reciprocal, sliding brake apply and return movement;
• and
• 2. a wedge member mounted in said housing for movement along a line of action intersecting the path of sliding movement of said tappet and including a wedge portion disposed interiorly of said housing for camming coaction with said tappet and a free end portion disposed adjacent said opening;
• and
• D. fastener means carried by said free end portion of said wedge member and adapted to operate to ratchedly receive the threaded free end portion of the piston rod of the associated air motor in response to movement of the associated air motor relative to said housing generally along said line of action from a pre-assembly position in which it is adjacent but spaced from said opening, with the threaded free end portion of its piston rod generally coaxial with said line of action and adjacent said free end portion of said wedge member, to its securedly assembled position closing said opening, whereby to secure the free end portion of the piston rod to said free end portion of said wedge member.

A brake actuator adapted for use with an air motor of the type including a motor casing and a piston rod projecting from said casing;

• said actuator comprising:
• A. an actuator housing defining an opening providing access to the interior of said housing;
• B. attachment means on said housing adjacent said opening adapted to coact with attachment means on the casing of the associated air motor to securedly assemble the casing to said housing in a position closing said opening;
• C. an actuator mechanism positioned interiorly of said housing and including an actuator member mounted within said housing for reciprocal brake apply and release movement along a line of action generally normal to the plane of said opening and having a free end portion disposed adjacent and generally concentrically within said opening;
• D. a flexible, annular seal sealingly engaged at its outer periphery with said housing generally adjacent the circumference of said opening and sealingly engaged at its inner periphery with the outer periphery of said free end portion, whereby to seal said opening to preclude contamination of the interior of said housing without impeding the aforesaid brake apply and release movement of said actuator member along said line of action;
• and fastener means carried by said free end portion of said actuator member within the inner periphery of said annular seal and adapted to operate to secure the piston rod of the associated air motor to said free end portion in response to movement of the associated air motor relative to said housing generally along said line of action from a pre-assembly position in which it is adjacent but spaced from said opening, with its piston rod generally coaxial with said line of action and adjacent said free end postion, to its securedly assembled position closing said opening.

A brake actuator adapted for use with an air motor of the type including a motor casing, a piston rod projecting from said casing, and attachment means on said casing;

• said actuator comprising:
• A. an actuator housing defining an opening providing access to the interior of said housing;
• B. an actuator mechanism positioned interiorly of said housing and including an actuator member mounted within said housing for reciprocal brake apply and release movement and having a free end portion disposed adjacent said opening;
• C. attachment means on said housing adjacent said opening adapted to coact with the attachment means on the casing of the air motor to positively locate the air motor in an assembled position on said housing, closing said opening, in response to generally linear movement of the associated air motor relative to said housing from a pre-assembly position, in which it is adjacent but spaced from said opening with its piston rod positioned adjacent said free end portion, to its assembled position on said housing closing said opening;
• and
• D. fastener means carried by said free end portion of said actuator member and adapted to operate to secure the piston rod of the associated air motor to said free end portion in response to the aforedescribed generally linear movement of the air motor.

A brake actuator comprising:

• A. an air motor including
• 1. a casing;
• 2. a piston rod projecting from one side of said casing;
• and
• 3. a plurality of attachment means on said one casing side at opposite sides of said piston rod;
• B. an actuator housing defining an opening providing access to the interior of said housing;
• C. an actuator mechanism positioned interiorly of said housing and including an actuator member mounted within said housing for reciprocal brake apply and release movement and having a free end portion disposed adjacent said opening;
• D. a plurality of attachment means on said housing at opposite sides of said opening operative to coact with said attachment means on the casing of said air motor to positively locate the air motor in an assembled position on said housing, closing said opening, in response to generally linear movement of said air motor relative to said housing from a pre-assembly position, in which it is adjacent but spaced from said opening with its piston rod positioned adjacent said free end portion, to its assembled position on said housing closing said opening;
• and
• E. fastener means carried by said free end portion of said actuator member and adapted to operate to secure said piston rod of said air motor to said free end portion in response to the aforedescribed generally linear movement of said air motor.