Fluidic indicating device

Claim 2

An indicating device comprising two sources of fluid under pressure, a nozzle associated with each of said fluid sources, said nozzles being directed at such an angle with respect to each other that the individual fluid streams issuing from said nozzles will combine to form a common fluid stream, sensing means positioned to be contacted by said common fluid stream to generate a signal relative to the angle of said common fluid stream from a predetermined norm, and actuating means responsive to operation of said sensing means for altering the characteristic of at least one of said individual fluid streams to return said angle of said common fluid stream to said predetermined norm.

Claim 3

An indicating device as defined in claim 1 wherein the direction of flow of said common fluid stream is variable in response to change in the momentum of tHe fluids issuing from said nozzles.

Claim 4

An indicating device as defined in claim 1 wherein the fluid supplied to said nozzles is a gas and the direction of flow of said common fluid stream is variable in response to the relative pressure of the gas supplied to said nozzles.

Claim 5

An indicating device as defined in claim 1 wherein a plurality of sensing elements are located in position to be contacted by said common fluid stream, and an electrical device is connected to said sensing elements and controlled thereby.

Claim 6

An indicating device as defined in claim 1 wherein said nozzles are relatively movable to different angles with respect to each other.

Claim 7

An indicating device as defined in claim 1 wherein the said actuating means indicates the pressure ratio of the fluids issuing from said nozzles.

Claim 8

An indicating device as defined in claim 1 wherein said actuating means is operable to compensate for relative variations of a characteristic of said individual streams from a predetermined norm.

Claim 9

An indicating device as defined in claim 1 wherein one of said nozzles is held in fixed position with respect to said sensing means and another of said nozzles is movable to different angular positions with respect to said fixed nozzle.

Claim 10

An indicating device as defined in claim 1 wherein said actuating means includes an electrical motor operable to move one of said nozzles to different angular positions with respect to another of said nozzles.

Claim 11

An indicating device as defined in claim 1 wherein there are two nozzles, one of which is held in a fixed position and the other of which is movable to various angular positions with respect to said fixed nozzle, said sensing means is positioned to be contacted by said common fluid stream when said movable nozzle is located in a predetermined position, and said actuating means is operable to restore said movable nozzle to said predetermined position upon displacement of said common fluid stream with respect to said sensing means.

Claim 12

A fluid pressure ratio indicating device comprising two sources of fluid pressure, a fixed nozzle supplied with fluid from one of said sources, a movable nozzle supplied with fluid from the other of said sources, said nozzles being positioned to produce fluid jets which intersect at a predetermined point to produce a common fluid stream, said movable nozzle being mounted on a support rotatable about an axis passing through said fixed point, sensing means positioned to be contacted by said common fluid stream when said movable nozzle is in a predetermined position and the pressure ratio of said fluid sources has a predetermined value, a motor for rotating said support to vary the relative angular positions of said fixed and movable nozzles, an electrical circuit including said motor and said sensing means, said sensing means being operable upon displacement of said common fluid stream from said sensing means in response to a deviation of the pressure ratio of the fluid from said sources from said predetermined value to actuate said electrical circuit and motor to rotate said support and movable nozzle to a new position wherein said common fluid stream will again contact said sensing means, and a scale located adjacent said rotatable support calibrated in terms of pressure ratio for indicating the pressure ratio of said fluid sources when said support and nozzle are in said new position.

Claim 13

A fluid pressure ratio indicating device comprising two sources of fluid pressure, a fixed nozzle supplied with fluid from one of said sources, a movable nozzle supplied with fluid from the other of said sources, said nozzles being positioned to produce fluid jets which intersect at a predetermined point to produce a common fluid stream, said movable nozzle being mounted on a support rotatable about an axis passing through said fixed point, sensing means positioned to be contacted by said common fluid stream when said movable nozzle is in a predetermined position and the pressure ratio of said fluid sources has a predetermined value, a motor for rotating said support to vary the relative angular positions of said fixed and movable nozzles, an electrical circuit including said motor and said sensing means, said sensing means being operable upon displacement of said common fluid stream from said sensing means in response to a deviation of the pressure ratio of the fluid from said sources from said predetermined value to actuate said electrical circuit and motor to rotate said support and movable nozzle to a new position wherein said common fluid stream will again contact said sensing means, and a scale located adjacent said rotatable support calibrated in terms of pressure ratio for indicating the pressure ratio of said fluid sources when said support and nozzle are in said new position.