WO2001034414A1 - Indicateur de pression de pneu transporte a bord d'une roue - Google Patents

Indicateur de pression de pneu transporte a bord d'une roue Download PDF

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Publication number
WO2001034414A1
WO2001034414A1 PCT/US1999/024009 US9924009W WO0134414A1 WO 2001034414 A1 WO2001034414 A1 WO 2001034414A1 US 9924009 W US9924009 W US 9924009W WO 0134414 A1 WO0134414 A1 WO 0134414A1
Authority
WO
WIPO (PCT)
Prior art keywords
tire
pressure
inner chamber
indicating member
window
Prior art date
Application number
PCT/US1999/024009
Other languages
English (en)
Inventor
Larry W. Holcomb
Original Assignee
Holcomb Larry W
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holcomb Larry W filed Critical Holcomb Larry W
Priority to PCT/US1999/024009 priority Critical patent/WO2001034414A1/fr
Priority to AU17061/00A priority patent/AU1706100A/en
Publication of WO2001034414A1 publication Critical patent/WO2001034414A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0491—Constructional details of means for attaching the control device
    • B60C23/0496—Valve stem attachments positioned outside of the tyre chamber

Definitions

  • the present invention relates to pressure gauges of the type carried on a vessel being monitored. More particularly, the invention is a mechanical indicator of pneumatic pressure which indicates by color coding whether the pressure being monitored is within specifications. In alternative embodiments, the novel indicator cooperates with or is an integral part of a valve enabling the vessel to be filled with compressed gas.
  • a preferred application is pneumatic tires for transport vehicles.
  • the invention is readily applicable to tanks, conduits, and other holders of gases under pressure, and could be employed in any environment wherein internal gas pressure is to be maintained in a predetermined range above atmospheric air pressure.
  • Pneumatic tires are designed to operate at pressures within narrow predetermined ranges. Typically, tires lose pressure and must be reinflated to specified values by the operator. This maintenance operation requires a pressure gauge. Many operators rely upon service facilities offering compressed air to supply the gauge. If the service facility does not supply a gauge, the operator of the vehicle is obliged to furnish the gauge. It is easy to neglect to bring a tire pressure gauge at all times, and the operator may therefore lack a gauge when desiring to restore or check tire pressure. Even if a pressure gauge is at hand, it is not always convenient to utilize typical tire pressure gauges. Pressure gauges are normally designed to operate when pressed against the valve of the tire sufficiently to release pressure so that it may be measured and indicated.
  • the present invention exposes indicia, preferably in the form of a predetermined color, which enables immediate discernment of whether pressure is within specifications. There is no bellows in the present invention.
  • the subject indicator shown in United States Patent Number 5,641,902, issued to Jung Un Hong on June 24, 1997 incorporates an inflatable member which displays indicia indicating inflation pressure.
  • a color signal is visible through a window to indicate tire pressure.
  • the present invention enable a vehicle operator to determine sufficiency of tire pressure at a glance. There is no necessity of pressing an instrument against the valve. It is not even necessary that the indicator be fully visible and unobscured, since any glimpse of a predetermined color immediately conveys the sought information. Therefore, minor accumulation of dust and dirt, which are normally present under driving conditions, would usually not affect function of the invention.
  • the invention comprises a tubular housing which protrudes inwardly radially from a wheel, in the usual location of filling valves for pneumatic tires. It has a window revealing an indicating member which is color coded to indicate tire pressure relative to predetermined pressure values. The indicating member has colors signifying excessive pressure, proper pressure, and low pressure. The user will determine at the state of inflation of the tire at a glance.
  • the novel indicator may be fabricated to thread to conventional filling valves. Alternatively, it may be configured to supersede the usual filling valve. In either form, the novel indicator is carried on the tire being monitored for pneumatic pressure after installation, and need not be removed. The novel indicator is optionally configured to enable inflation in the usual manner without removing the indicator from the valve or tire. Accordingly, it is a principal object of the invention to provide a tire pressure indicator which is carried on a tire being monitored.
  • novel indicator provide visual indication of whether the pressure is within specifications by color coding.
  • Fig. 1 is a side cross sectional view of one embodiment of the invention.
  • Fig. 2 is a side cross sectional view of a second embodiment of the invention.
  • Fig. 3 is a side elevational view of a third embodiment of the invention.
  • Fig. 1 of the drawings illustrates an embodiment of the invention adapted to be installed on a conventional filling valve stem (not shown) of a pneumatic tire.
  • tire pressure indicator 10 comprises a generally cylindrical housing 12 having an inner chamber 14 and a window 16 exposing inner chamber 14 to the exterior of housing 12.
  • Housing 12 is fabricated from a suitable strong, opaque material, such as metal or a synthetic resin.
  • Window 16 is solid rather than open, but is formed from a transparent material. Window 16 closes inner chamber 14 so that external air pressure cannot influence events occurring within inner chamber 14 responsive to tire pressure. It will be apparent from examining Fig. 1 that housing 12 includes a first portion above window 16 and a second portion below window 16. Window 16 is located on the side of housing 12. In the embodiment of Fig. 1, window 16 forms a transparent circumferential band encircling inner chamber 14, so that the interior is visible from the side of indicator 10 in any direction.
  • a connecting portion or connector 18 is formed at the lower end of inner chamber 14.
  • Connector 18 extends housing 12, and bears threads 20 enabling indicator 18 to be threaded to the threads of the filling valve stem (not shown).
  • a wall 22 is formed at the bottom of chamber 14.
  • An air passage 24 formed in connector 18 establishes pneumatic communication between chamber 14 and air generating pressure within the tire.
  • a projection 26 for depressing the valve of the filling valve assembly depends from wall 22.
  • Wall 22 also has openings 28 to conduct air pressure from air passage 24 into chamber 14.
  • An indicating member 30 is slidably disposed within chamber 14, and is arranged to pass by window 16.
  • Indicating member 30 has a first external area designated at 32 colored with a first predetermined hue for indicating proper pressure within the tire, a second external area designated at 34 colored with a second predetermined hue, and a third external area designated at 36 colored with a third predetermined hue.
  • Colored areas 32, 34, 36 provide color coding visible through window 16 to indicate the state of inflation of the tire relative to predetermined ranges of pressure preferred by the tire or vehicle manufacturer.
  • proper inflation is signalled by green, which conventionally is associated with an operative condition.
  • Indicating member 30 is acted on by two opposing forces. Pneumatic pressure from the tire is conducted through passage 24 and openings 28 so that it urges member 30 upwardly, as depicted in Fig. 1.
  • a compression coil spring 38 of predetermined spring rate is disposed within chamber 14 on that side of indicating member 30 opposite the side exposed to tire pressure. Indicating member 30 moves within chamber 14 responsive to differential in force between spring force of spring 38 and pneumatic pressure conducted from the tire to chamber 14. As indicating member 30 moves responsively to the two forces, an appropriate colored area 32, 34, or 36 aligns with window 16, and is visible from the outside.
  • the spring rate is selected such that colored area 32 aligns with and is visible through window 16 when tire pressure is within the acceptable range, area 34 aligns with window 16 when tire pressure is excessive, and area 36 aligns with window 16 when tire pressure is too low.
  • Fig. 2 illustrates a second embodiment of the invention which provides the features of the embodiment of Fig. 1, and adds a feature enabling the tire to be charged with compressed gas without removing the novel tire pressure indicator from the tire.
  • tire pressure indicator 110 includes a housing 112 and a connector 118 both functioning in a manner similar to their counterparts of the embodiment of Fig. 1.
  • An indicating member 130 bearing three colored areas 132, 134, 136 is slidably disposed within chamber 114 such that the colored areas 132, 134, 136 become visible through window 116 formed in housing 112.
  • a spring 138 opposes force applied by pneumatic pressure conducted from a tire (not shown) through connector 118 into chamber 114.
  • Indicator 110 has a bypass conduit 140 disposed in pneumatic communication with air passage 124 of connector
  • Bypass conduit 140 has a passageway 142 which contains a check valve 144.
  • Check valve 144 closes passageway 142 at a valve seat 146.
  • a spring 148 urges check valve 144 against seat 146. Force of spring 148 is readily overcome when an air chuck (not shown) or other apparatus for charging the tire with compressed gas is placed over the upper end 150 of bypass conduit 140.
  • upper end 150 is configured similarly to corresponding parts of a conventional filling valve assembly, so that bypass conduit 140 may be connected to conventional air replenishing apparatus (not shown).
  • check valve 144 has a projection 152 enabling depression of check valve 144 when an air chuck is fitted to bypass conduit 140.
  • Threads 154 enable a threaded cap (not shown) to be attached to upper end 150 to protect check valve 144 and its seat 146 from contamination.
  • Passageway 142 opens to air passage 124 so that freshly introduced pressurized gas both fills the tire and also acts on indicating member 130.
  • novel indicator 210 is configured to supersede the conventional filling valve entirely, being fitted to a metallic wheel in place of the conventional filling valve assembly.
  • Indicator 210 includes the functional components of, selectively, indicator 10 and 110, and further includes a resilient bulb 260 bearing a groove 262.
  • Bulb 260 is dimensioned and configured to seat within an opening (not shown) formed in conventional wheels for receiving conventional filling valve assemblies.
  • Bulb 260 and groove 262 collectively provide structure connecting housing 212 directly to the wheel (not shown) on which the tire is mounted.
  • the connecting structure cooperates with the wheel both to mount indicator 210 securely to the wheel and also to establish an air passage establishing pneumatic communication between said inner chamber and air generating pressure within the tire.
  • the present invention is susceptible to modifications and variations which may be introduced without departing from the inventive concept.
  • threads 20 or 120 securing indicator 10 or 110 to the filling valve assembly may be modified to enable manual connection to the wheel in another manner, so long as manual connection and removal is enabled.
  • the invention may be modified to attach directly to the tire or to an inner tube (not shown) associated with the tire.
  • the invention may be fabricated integrally with tires and inner tubes, if desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

L'invention se rapporte à un indicateur de pression de pneu (110) transporté sur un pneu dont la pression de gonflage est surveillée. Cet indicateur (110) comporte un logement (112) renfermant un élément indicateur (130) portant un codage couleur (132) correspondant à un gonflage correct. De préférence, un codage couleur supplémentaire (134, 136) est utilisé pour indiquer une pression excessive du pneu ou une pression faible ou inadaptée. L'élément indicateur (130) occupe une chambre (114) dans laquelle un ressort hélicoïdal agit sur l'élément indicateur (130) dans un sens, et la pression d'air du pneu agit sur ledit élément indicateur dans l'autre sens. Le différentiel de forces agissant sur l'élément indicateur (130) provoque le déplacement de l'élément indicateur (130) de sorte que le codage couleur approprié (132, 134, 136) apparaisse à travers une fenêtre (116) formée dans le logement. L'indicateur de pression (110) peut éventuellement comporter un conduit (140) permettant de gonfler le pneu sans qu'il soit nécessaire de retirer l'indicateur (110). Dans des réalisations différentes, l'indicateur (110), objet de cette invention, s'adapte par filetage sur une valve de remplissage traditionnelle et remplace ladite valve.
PCT/US1999/024009 1999-11-09 1999-11-09 Indicateur de pression de pneu transporte a bord d'une roue WO2001034414A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US1999/024009 WO2001034414A1 (fr) 1999-11-09 1999-11-09 Indicateur de pression de pneu transporte a bord d'une roue
AU17061/00A AU1706100A (en) 1999-11-09 1999-11-09 Tire pressure indicator carried aboard a wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1999/024009 WO2001034414A1 (fr) 1999-11-09 1999-11-09 Indicateur de pression de pneu transporte a bord d'une roue

Publications (1)

Publication Number Publication Date
WO2001034414A1 true WO2001034414A1 (fr) 2001-05-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/024009 WO2001034414A1 (fr) 1999-11-09 1999-11-09 Indicateur de pression de pneu transporte a bord d'une roue

Country Status (2)

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AU (1) AU1706100A (fr)
WO (1) WO2001034414A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112351827A (zh) * 2018-07-02 2021-02-09 康明斯滤清系统知识产权公司 用于过滤器组件的限制指示器装置
US11772024B2 (en) 2017-01-04 2023-10-03 Cummins Filtration Ip, Inc. Filter assembly with a diffuser

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539928A (en) * 1983-08-01 1985-09-10 Scovill Inc. Tire equalizer and indicator
US5103670A (en) * 1990-07-13 1992-04-14 Wu Min Yu Tire valve and pressure gauge
US5503012A (en) * 1995-05-16 1996-04-02 Rabizadeh; Masoud Tire pressure monitoring device
US5606123A (en) * 1995-05-16 1997-02-25 Rabizadeh; Masoud Tire pressure monitoring device capable of being folded
US5641902A (en) * 1996-05-15 1997-06-24 Hong; Jong Un Tire valve cap pressure gauge
US5687672A (en) * 1996-01-16 1997-11-18 Gabriel; Earl W. Pressure indicator for tires

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539928A (en) * 1983-08-01 1985-09-10 Scovill Inc. Tire equalizer and indicator
US5103670A (en) * 1990-07-13 1992-04-14 Wu Min Yu Tire valve and pressure gauge
US5503012A (en) * 1995-05-16 1996-04-02 Rabizadeh; Masoud Tire pressure monitoring device
US5606123A (en) * 1995-05-16 1997-02-25 Rabizadeh; Masoud Tire pressure monitoring device capable of being folded
US5687672A (en) * 1996-01-16 1997-11-18 Gabriel; Earl W. Pressure indicator for tires
US5641902A (en) * 1996-05-15 1997-06-24 Hong; Jong Un Tire valve cap pressure gauge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11772024B2 (en) 2017-01-04 2023-10-03 Cummins Filtration Ip, Inc. Filter assembly with a diffuser
CN112351827A (zh) * 2018-07-02 2021-02-09 康明斯滤清系统知识产权公司 用于过滤器组件的限制指示器装置
US11596890B2 (en) 2018-07-02 2023-03-07 Cummins Filtration Ip, Inc. Restriction indicator device for filter assembly

Also Published As

Publication number Publication date
AU1706100A (en) 2001-06-06

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