Output pressure control apparatus

Apparatus for controlling the output pressure of a fluid output means, said apparatus being adapted to be in communication with a supply of predetermined pressure above atmospheric pressure and being adapted to provide a regulated output pressure within the range of said predetermined pressure and atmospheric pressure in response to control signals being selectively applied thereto, said apparatus comprising:

• a manifold assembly having an inlet means, a relief means, an outlet means and internal passage means for communicating fluid among said inlet means, relief means and outlet means;
• said manifold assembly comprising a manifold body, a cover plate for said manifold body and said restrictor means attached to one of said manifold body and said cover plate, said first and second control means being attached to the other of said manifold body and cover plate, said internal passage means being located in said manifold body, cover plate and restrictor means;
• first control means located in said inlet means for selectively communicating fluid from said supply to said internal passage means to enable the fluid pressure within said internal passage means to increase, said first control means being operable in response to said control signal being applied thereto;
• second control means located in said relief means for selectively communicating fluid from said internal passage means to said relief means to enable the fluid pressure within said internal passage means to decrease, said second control means being operable in response to said control signal being applied thereto;
• filter means located in said outlet means for preventing dirt particles from passing through said outlet means;
• and,
• a restrictor means for limiting the volume of fluid passing through said outlet means.

Apparatus for controlling the output pressure of a pneumatic output line adapted to be connected to said apparatus, said apparatus being adapted to be in communication with a gaseous supply of predetermined pressure above atmospheric pressure and being adapted to provide an output pressure within the range of said predetermined pressure and atmospheric pressure in response to a control signal being selectively applied thereto, said apparatus comprising:

• a manifold assembly having an inlet means, a relief means, an outlet means adapted to be connected to the output line, a pressure measuring port means and internal passage means for communicating gaseous fluid among said inlet means, relief means, pressure measuring port means and outlet means;
• first control means located in said inlet means for selectively communicating gaseous fluid from said supply to said internal passage means to enable the gaseous fluid pressure within said internal passage means to increase, said first control means being operable in response to said control signal being applied thereto;
• second control means located in said relief means for selectively communicating gaseous fluid from said internal passage means to said relief means to enable the gaseous fluid pressure within said internal passage means to decrease, said second control means being operable in response to said control signal being applied thereto;
• filter means located in said outlet means for preventing dirt particles from passing through said outlet means into the output line, all of the fluid passing to and from the output line passing through said filter means;
• and,
• a restrictor means for limiting the volume of gaseous fluid passing through said outlet means.

Apparatus for controlling the output pressure of a pneumatic output means, said apparatus being adapted to be in communication with a gaseous supply of predetermined pressure above atmospheric pressure and being adapted to provide an output pressure within the range of said predetermined pressure and atmospheric pressure in response to a control signal being selectively applied thereto, said apparatus comprising:

• a manifold assembly having an inlet means, a relief means, an outlet means, a pressure measuring port means and internal passage means for communicating gaseous fluid among said inlet means, relief means, pressure measuring port means and outlet means;
• said manifold assembly comprising a manifold body, a cover plate for said manifold body and said restrictor means attached to one of said manifold body and said cover plate, said first and second control means being attached to the other of said manifold body and cover plate, said internal passage means being located in said manifold body, cover plate and restrictor means;
• first control means located in said inlet means for selectively communicating gaseous fluid from said supply to said internal passage means to enable the gaseous fluid pressure within said internal passage means to increase, said first control means being operable in response to said control signal being applied thereto;
• second control means located in said relief means for selectively communicating gaseous fluid from said internal passage means to said relief means to enable the gaseous fluid pressure within said internal passage means to decrease, said second control means being operable in response to said control signal being applied thereto;
• filter means located in said outlet means for preventing dirt particles from passing through said outlet means;
• and,
• a restrictor means for limiting the volume of gaseous fluid passing through said outlet means.