US3691981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose rupture indicator
Assignee: Fluidics Inc
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Filing: 1972-02-04
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Granted: 1972-09-19
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Expires: 1992-02-04
Abstract
Abstract A hose rupture indicator adapted to be secured in communication with a fluid line containing hydraulic fluid under pressure. When pressure in the line drops below a predetermined level, an elongated indicator is extended out of the rupture indicator housing to provide an indicator which may be felt in the dark or in a restricted location to immediately apprise an operator which line of a plurality of fluid lines has in fact ruptured.
Inventors
- 👤 Prabhakar B R Rao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:53
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01L; G01L19/00; G01L19/08; G01L19/12; G01L7/00; G01L7/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
288 words
A hose rupture indicator including a seat having a bore therethrough, one end of said seat being adapted to be secured in communication with a hose containing hydraulic fluid under pressure, a body member having a central bore therethrough, one end of said body member being adapted to be secured to the other end of said seat, with the bores of said seat and said body member in axial alignment, and the other end of said body member having a concentric aperture therethrough, an elongated indicator longitudinally movable within the bores of said body member and said seat from a first position, wherein said elongated indicator is completely within the bores of said body member and said seat, to a second position, wherein one end of said indicator conspicuously protrudes through said concentric aperture, said elongated indicator having an enlarged head portion having an annular surface acted upon by the hydraulic fluid, spring means positioned around said elongated indicator one end of which abuts the underside of said enlarged head and the other end of which abuts the upper surface of said seat, whereby when pressurized fluid is normally moving through said hose, said fluid acts against the annular surface of said enlarged head, overcoming the force of said spring acting against the underside of said enlarged head, and maintains said elongated indicator in its first position, and when there is a leak in the hose which diminishes the pressure of the fluid acting against the annular surface of said enlarged head, the force of said spring acting against the underside of said enlarged head overcomes the diminishing fluid pressure exerted against the annular surface of said enlarged head and said elongated indicator moves to its second position.
Claim 2
Dependent Claim
288 words
A hose rupture indicator including a seat having a bore therethrough, one end of said seat being adapted to be secured in communication with a hose containing hydraulic fluid under pressure, a body member having a central bore therethrough, one end of said body member being adapted to be secured to the other end of said seat, with the bores of said seat and said body member in axial alignment, and the other end of said body member having a concentric aperture therethrough, an elongated indicator longitudinally movable within the bores of said body member and said seat from a first position, wherein said elongated indicator is completely within the bores of said body member and said seat, to a second position, wherein one end of said indicator conspicuously protrudes through said concentric aperture, said elongated indicator having an enlarged head portion having an annular surface acted upon by the hydraulic fluid, spring means positioned around said elongated indicator one end of which abuts the underside of said enlarged head and the other end of which abuts the upper surface of said seat, whereby when pressurized fluid is normally moving through said hose, said fluid acts against the annular surface of said enlarged head, overcoming the force of said spring acting against the underside of said enlarged head, and maintains said elongated indicator in its first position, and when there is a leak in the hose which diminishes the pressure of the fluid acting against the annular surface of said enlarged head, the force of said spring acting against the underside of said enlarged head overcomes the diminishing fluid pressure exerted against the annular surface of said enlarged head and said elongated indicator moves to its second position.
Claim 3
Dependent Claim
69 words
The hose rupture indicator according to claim 1, wherein said elongated indicator is provided with a central bore extending from its lowermost end, in communication with the bores of said seat and said body member as said elongated indicator moves longitudinally, and terminating beyond Said enlarged head portion with radial duct means communicating therefrom to the bore of said body member above said annular surface of said enlarged head.
Claim 4
Dependent Claim
82 words
The hose rupture indicator according to claim 2, wherein first stop means comprising a shoulder portion restricting the bore of said body member furnishes a stop against the outward movement of said elongated indicator and determines the second position thereof, said radial duct means being positioned within said elongated indicator so as to always be beneath said stop means and furnish communication between the fluid and the annular surface of said enlarged head when said elongated indicator is in its second position.
Claim 5
Dependent Claim
46 words
The hose rupture indicator according to claim 3, wherein the periphery of said elongated indicator is enlarged above said enlarged head so as to abut said stop means when said elongated indicator is in its second position, said radial ducts being positioned within said enlarged periphery.
Claim 6
Dependent Claim
70 words
The hose rupture indicator according to claim 4, wherein second stop means comprising a restriction of the bore in said seat furnished a stop against the inward movement of said elongated indicator by said spring means when said indicator moves from said second position to said first position, the inward most end of said elongated indicator abutting said second stop means when said elongated indicator is in its first position.
Claim 7
Dependent Claim
27 words
The hose rupture indicator according to claim 5, wherein seal means are provided between the periphery of said enlarged head and the bore of said body member.
Claim 8
Dependent Claim
32 words
The hose rupture indicator according to claim 6, wherein seal means are provided between the periphery of said elongated indicator and the bore of said body member beyond said first stop means.
Claim 9
Dependent Claim
31 words
The hose rupture indicator according to claim 7, wherein seal means are provided between the periphery of said elongated indicator and the bore of said seat above said second stop means.
Claim 10
Dependent Claim
52 words
The hose rupture indicator according to claim 8, wherein said seat includes a male portion which is threadedly received within a mating female portion of said body member, and wherein said seal means between the periphery of said elongated indicator and the bore of said seat are located in said male portion.
Claim 11
Dependent Claim
42 words
The hose rupture indicator according to claim 9, wherein a vent hole is provided through said body member communicating with the bore thereof, said vent hole being located between the underside of said enlarged head and the upper surface of said seat.
Claim 12
Dependent Claim
38 words
The house rupture indicator according to claim 10, wherein a brass plug is secured to said one end of said elongated indicator, the periphery of said brass plug substantially conforming to the concentric aperture in said body member.
Claim 13
Dependent Claim
21 words
The house rupture indicator according to claim 10, wherein the end of said elongated indicator is painted with a radium paint.
References Cited (Backward Citations)
US774874A
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US1753361A
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US3131667A
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US3276417A
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US3411477A
Cited
US3522789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |