Pressure measuring transducer

Claim 2

A transducer for detecting pressure exerted upon the periphery of an elastically deformable enclosure comprising: a member elastically deformable in response to deformation of the periphery of the enclosure; means drivingly engaging said member with the periphery of the enclosure including a second member which cooperates with said first mentioned member to grip the enclosure therebetween, and also including means pivotally connecting said members and means to adjustably secure the enclosure between said members; and deformation detecting means adapted to detect deformation of said first member to thereby detect pressure exerted on the periphery of the enclosure.

Claim 3

The combination according to claim 1 wherein said deformation detecting means is mounted on said first and said second members.

Claim 4

The combination according to claim 2 wherein said deformation detecting means includes at least one strain gage having electrical properties proportional to deformation of one of said members.

Claim 5

A transducer for detecting pressure exerted upon the periphery of an elastically deformable enclosure subject to acceleration comprising: first and second elastically deformable members; means holding said members against the periphery of the enclosure at spaced points thereon such that said members will be moved towards or away from each other in response to deformation of the periphery of the enclosure; and detecting means adapted to detect movement of said members toward or away from each other due to deformation of the enclosure.

Claim 6

A transducer for detecting pressure exerted upon the periphery of an elastically deformable enclosure subject to acceleration comprising: first and second elastically deformable members; means holding said members against the periphery of the enclosure at spaced points thereon such that said members will be moved towards or away from each other in response to deformation of the periphery of the enclosure; and detecting means adapted to detect movement of said members toward or away from each other due to deformation of the enclosure.

Claim 7

The combination according to claim 4 wherein said first and second members are substantially parallel, cantilever arms having substantially identical cross sections.

Claim 8

The combination according to claim 4 wherein said holding means includes means pivotally connecting said members and means adjustably securing the enclosure between said members.

Claim 9

The combination according to claim 4 including conversion means to convert signals from said detecting means generated by movements of said members toward or away from each other into a measurement of pressure.

Claim 10

The combination according to claim 7 wherein said conversion meaNs is electrical circuit means.

Claim 11

The combination according to claim 5 wherein said identical cantilever arms have at least one mounting surface on each arm adapted to support said deformation detecting means thereon, said mounting surfaces being mutually parallel.

Claim 12

The combination according to claim 9 wherein said detecting means include a set of two matched strain gages having substantially identical electrical characteristics, one gage being mounted on each arm on a mounting surface thereon.

Claim 13

The combination according to claim 10 wherein said two strain gages are mounted on corresponding mounting surfaces.

Claim 14

The combination according to claim 10 wherein said two strain gages are mounted on non-corresponding mounting surfaces.

Claim 15

The combination according to claim 5 wherein each of said cantilever arms is provided with two mounting surfaces, the mounting surfaces being mutually parallel, and wherein said detecting means is a set of four matched strain gages having substantially identical electrical characteristics, one gage being mounted on each mounting surface.

Claim 16

A transducer for detecting pressure exerted upon the periphery of an elastically deformable enclosure comprising: a member elastically deformable in response to deformation of the periphery of the enclosure; means drivingly engaging said member with the periphery of the enclosure including a second member which cooperates with said first mentioned member to grip the enclosure, and also including means to adjustably secure the enclosure between said members; and deformation detecting means adapted to detect deformation of said first member to thereby detect pressure exerted on the periphery of the enclosure.

Claim 17

A transducer for detecting pressure exerted upon the periphery of an elastically deformable enclosure comprising: a member elastically deformable in response to deformation of the periphery of the enclosure; means drivingly engaging said member with the periphery of the enclosure including a second member which cooperates with said first mentioned member to grip the enclosure, and also including means to adjustably secure the enclosure between said members; and deformation detecting means adapted to detect deformation of said first member to thereby detect pressure exerted on the periphery of the enclosure.

Claim 18

A transducer for measuring pressure in an enclosure free from the effects of accelerations along at least one direction comprising: deformation detecting means including a structure drivingly engaged with said enclosure, and also including means causing deforming of respective portions of said structure oppositely in response to deformation of said enclosure periphery; mounting means mounting said structure with respect to said portions and said at least one direction of acceleration so that said portions are deformed substantially identically by said accelerations; and output signal means providing an output signal corresponding to the extent of opposite deformation of said portions, whereby a signal indicative of the deformation of said enclosure periphery and substantially unaffected by accelerations along said at least one direction is provided.

Claim 19

A transducer for measuring pressure in an enclosure free from the effects of accelerations along at least one direction comprising: deformation detecting means including a structure drivingly engaged with said enclosure, and also including means causing deforming of respective portions of said structure oppositely in response to deformation of said enclosure periphery; mounting means mounting said structure with respect to said portions and said at least one direction of acceleration so that said portions are deformed substantially identically by said accelerations; and output signal means providing an output signal corresponding to the extent of opposite deformation of said portions, whereby a signal indicative of the deformation of said enclosure periphery and substantially unaffected by accelerations along said at least one direction is provided.

Claim 20

The combination according to claim 15 wherein said elastically deformable structure is a cantilever arm extending in a tangential direction to said periphery of said enclosure and wherein said portions of said structure are upper and lower surfaces of said cantilever arm.

Claim 21

The transducer of claim 16 wherein said mounting means mounts said cantilever arm extending parallel to said at least one direction of acceleration whereby said surfaces are affected identically by said acceleration.

Claim 22

The transducer of claim 16 wherein said mounting means mounts said cantilever arm extending normally to said at least one direction and parallel to the planes of said upper and lower surfaces whereby said surfaces are affected identically by said acceleration.

Claim 23

The combination according to claim 15 wherein said structure includes first and second members which are substantially parallel, cantilever arms having substantially identically cross sections.

Claim 24

The combination according to claim 19 wherein said holding means includes means pivotally connecting said cantilever arms and means adjustably securing the enclosure between said cantilever arms.

Claim 25

pipe pressure measuring apparatus including a pair of spaced clamping arms, means joining said clamping arms for allowing movement of said arms toward and away from one another, readily releasable clamping means on said arms and inclUding pipe engaging portions for clamping a pipe between said arms, said readily releasable clamping means enabling said pipe pressure measuring apparatus to be readily moved and positioned along said pipe, measuring means including strain gauge means responsive to movement of said arms, and indicating means for indicating the pressure within said pipe connected with said strain gauge means.

Claim 26

pipe pressure measuring apparatus including a pair of spaced clamping arms, means joining said clamping arms for allowing movement of said arms toward and away from one another, readily releasable clamping means on said arms and inclUding pipe engaging portions for clamping a pipe between said arms, said readily releasable clamping means enabling said pipe pressure measuring apparatus to be readily moved and positioned along said pipe, measuring means including strain gauge means responsive to movement of said arms, and indicating means for indicating the pressure within said pipe connected with said strain gauge means.

Claim 27

Apparatus as defined in claim 21 wherein said clamping arms extend substantially parallel with one another.

Claim 28

Apparatus as defined in claim 21 including adjusting means for adjusting a portion of the clamping means to adjust the amount of applied pressure.

Claim 29

Apparatus as defined in claim 21 wherein said means joining said arms is positioned substantially midway between the outer ends of said clamping arms.

Claim 30

Apparatus as defined in claim 21 wherein said strain gauge means comprises a plurality of individual strain gauges, at least one of said strain gauges being in tension upon movement of said arms, and at least another of said strain gauges being in compression upon movement of said arms.

Claim 31

Apparatus as defined in claim 25 wherein each of said strain gauges is connected in a bridge circuit, said bridge circuit being connected with said indicating means.

Claim 32

Apparatus as defined in claim 21 wherein said clamping arms and said means joining said arms comprise a substantially U-shaped one-piece construction.

Claim 35

The method as defined in claim 28 wherein: a. said measuring apparatus is attached to said pipe wall in a manner not to disturb said piping system or to puncture or otherwise deform said pipe wall and said pressure is measured as a function of diametrical expansion of said pipe wall.