IL44375A - Pressure gauge - Google Patents

Description

PRESSURE GAUGE D present Inventio relates a nove pressure it relates a novel pressure gauge adapted indicate a predetermined narrow range of The novel pressure of manufactured of inexpensive materials and can thus he Gauges according to present are of value measurements where ry Indicate narrow range of It is of speolal use n and particularly for indicating pressure applied to a fluid which being further features o the inventio apparent types of pressure gauges are bu most of these rather expensive and pressure gauge according to the present invention was developed as disposable unit use in conjunction medical The liquid to generally provided a container made of resilien and according to one frequently used of an external pressure is applied said plastic resulting a predetermined rate of flow of liquid pressure be maintained within a predetermined range as to result a certain of liquid per unit As infusio appliances must be is advantageous to disposable accessories for especially of and for use in war The novel pressure indicator according to the invention is based on the expansion of a membrane of a able made of a material such rubber used the direct indication of the The pressure according to the present invention is illustrated by way of only with reference to the enclosed As shorn the the device according to the comprises in combination a housing consisting of the ber and member 12 adapted by rim 13 the of member in a tight members 11 and are ded asial bores 15 the nook 17 of member 12 serving for the attachment of the gauge the pressure source be In membe 11 la provided a be 18 and a spring Between members 11 and 12 there positional a rubber membrane which is and positioned a tight fit members 11 and 12 A scale 21 is applied on the surface of member so tha edge 22 of the ber 18 by position pressure applied to the When pressure is membrane 20 member 28 against the force of the spring Air from the inerior of member 11 can escape throug the this pressure contracts and membe 18 moves towards member A modification o the gauge according to the invention prises only members 1 and and this case the of the 20 serves indicator of the In this Case membrane is advantageously colored in a easily discernible facilitating reading of the Gauges o the above construction very degree of accurac depends on the small described hereinafter give an indication of pressure with an accuracy of abou pe cen hich entirely satisfactory for the The novel are advantageously produced as Members 11 and 12 can be made of inexpensive transparent the piston used advantageously o colored The simple are easily Λ device was constructed for with infusion and this was of about mm overall external diameter of pressures range of about 50 to clear that of pressures to be measured varied at will by using membranes of ness Similar results modification of the without In case a rubber membrane used of red and upper of the expanded rubber Indicates the pressure Amongst advantages the is lack o of to position and to motions It is tha above description by way of tion only and that many changes and variations shape and arrangement of parts can be resorted without departing fro the scope and spirit of the insufficientOCRQuality

Claims (1)

1. I MS Λ pressure gauge comprising a membe made transparent fitting member adapted to engage said member said member being provided a bore and a member for attachment to pressure a membrane being positioned in tight fit between members A pressur gauge as claimed in the membrane of A pressure gauge as claimed i claim 1 or wherein in said membe is positioned a member and a sprin pressin the membe against the membrane A pressure gauge as olalmed in any of claims 1 to wherein lis applied to member A pressure gauge olalmed in an of claims 1 wherein provided a the bottom of member Pressure gauges characterized in that the expansion of a used for the direct indication of substantially as described and reference to the insufficientOCRQuality