Acknowledge-monitor logic device with memory专利检索-流体动能能源燃料种类专利检索查询-专利查询网

Acknowledge-monitor logic device with memory

阅读：882发布：2022-03-12

专利汇可以提供Acknowledge-monitor logic device with memory专利检索，专利查询，专利分析的服务。并且A fluid-operated logic device suitable for operating an annunciator system, or the like, which device has a bore with a piston valve member slidable therein. The piston has a transverse alert crossover to permit fluid flow between a constant pressure conduit and an alert conduit leading to an alert indicator. The piston is also provided with a crossover which permits communication between a conduit in which pressure increases in response to the detection of trouble and a monitor conduit leading to a monitor alarm. A conduit branches from the trouble conduit and is connected to the casing to act against the head end of the piston valve member. Upon an increase in pressure in the trouble circuit, the piston will be moved to the alert position where the alert alarm will be given until this condition has been acknowledged, the kinetic energy of the moving piston being employed. The piston is then returned to its normal position by an acknowledge arrangement, but should the trouble condition persist, the piston will return to and remain in its monitor position to indicate that the trouble condition has not been removed. When the trouble disappears, fluid pressure will move the piston to its normal position.，下面是Acknowledge-monitor logic device with memory专利的具体信息内容。

权利要求

1. A fluid logic device for providing signals comprising: a casing, a single freely slidable piston means in said casing, a first signal output means and means for supplying fluid pressure to said first signal output means, second signal output means and means for supplying fluid pressure to said second signal output means, said piston means controlling the fluid connections between said first and second signal output means and their respective means for supplying fluid pressure, said first and second signal output means being mutually exclusive, means for supplying an input signal for moving said piston means from a first position blocking said first and second signal output means to a second position connecting said first signal output means with its means for supplying fluid pressure, return means for moving said piston means in a direction opposite to the direction the piston means is moved by said input signal means to a third position connecting said second signal means with its means for supplying fluid pressure.

2. A logic device as claimed in claim 1 wherein said piston means is moved by kinetic energy past said second signal output means to said first signal output means when said piston means is moved by said signal input means.

3. A device as claimed in claim 2 wherein said piston means comprises a piston having a head and a rod end, with a rod on said piston extending outwardly of said casing.

4. A device as claimed in claim 3 wherein said first and second output means include first and second axially spaced annular grooves on said piston means thereon to define transverse passages across the casing.

5. A device as claimed in claim 3 wherein the casing has end and sidewalls and the input signal means includes a connection to the end wall of the casing and a connection to the sidewall of the casing, the means for supplying fluid pressure to the second signal output means includes said connection to the sidewall.

6. A logic device as claimed in claim 1 wherein said first signal output means provides an alert condition signal and the second signal output means provides a monitor signal.

7. A logic device as claimed in claim 6 wherein there is a fluid passage past said piston means between the means for supplying fluid pressure to said first signal output means and one end of said piston means, and said input signal is supplied to an opposite end of said piston means whereby equilibrium is obtained by balance of pressures between the two ends of the piston means during the time a monitor signal is existent.

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Acknowledge-monitor logic device with memory

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