US3650150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire pressure indication
Assignee: Individual
•
Filing: 1970-01-28
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Granted: 1972-03-21
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Expires: 1990-01-28
Abstract
Abstract A tire pressure indicator is disclosed in the form of an improved valve stem. A cap is mounted on the valve stem and an elastically extensible member responsive to the pressure within the tire is provided between the rigid portion of the stem and the portion on which the cap is mounted so that the cap moves relative to the rigid portion of the stem in response to tire pressure. A measuring indication or plurality of indications are provided on the stem adjacent the end of the skirt of the cap for indicating proper tire pressure. In one embodiment and the measuring indicator is on a sleeve threaded on the stem and having a detent for locking the sleeve in a selected position indicative of tire pressure. In another embodiment a detent in the cap permits adjustment to a selected pressure as measured in fixed indicia on the valve stem. A rubber or plastic bellows either alone or supplemented by a metal spring is preferably employed as the elastically extensible member.
Inventors
- 👤 Willet Lawrence Eccles Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:52
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0496
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
121 words
A tire pressure indicator comprising: a stem having a free end; a removable cap covering the free end of the stem; means for providing a measuring indication adjacent an end skirt of the cap; an elastically extensible rubber bellows responsive to tire pressure integral with a rigid portion of the stem at the free end and extending outwardly therefrom and connectable to the cap at the other end of the bellows for effecting relative movement of the cap and stem, said cap covering the bellows when connected thereto; means for selectively adjusting the relative positions of the cap and measuring indication for indicating a preselected tire inflation pressure; and means for resisting relative movement of the cap and the measuring indication.
Claim 2
Dependent Claim
121 words
A tire pressure indicator comprising: a stem having a free end; a removable cap covering the free end of the stem; means for providing a measuring indication adjacent an end skirt of the cap; an elastically extensible rubber bellows responsive to tire pressure integral with a rigid portion of the stem at the free end and extending outwardly therefrom and connectable to the cap at the other end of the bellows for effecting relative movement of the cap and stem, said cap covering the bellows when connected thereto; means for selectively adjusting the relative positions of the cap and measuring indication for indicating a preselected tire inflation pressure; and means for resisting relative movement of the cap and the measuring indication.
Claim 3
Dependent Claim
44 words
A tire pressure indicator as defined in claim 1, wherein the means for adjusting comprises: a ring mounted on the stem, said ring including the measuring indication; and detent means on the ring for resiliently resisting relative movement of the ring and the stem.
Claim 4
Dependent Claim
117 words
A tire pressure indicator comprising: a substantially rigid tube in fluid communication with the pressure containing portion of a tire having one end substantially rigidly mounted and the other end free; an elastically extensible flexible bellow integral with the free end of the tube and extending away from the rigidly mounted end; a mounting member integral with the elastically extensible bellows at its other end for receiving a valve core; a measuring indication on the tube; and a removable cup-shaped cap over the end of the mounting member and extending over the extensible bellows, the open end of the cap being adjacent the measuring indication on the tube when the tire is inflated to a preselected pressure.
Claim 5
Dependent Claim
117 words
A tire pressure indicator comprising: a substantially rigid tube in fluid communication with the pressure containing portion of a tire having one end substantially rigidly mounted and the other end free; an elastically extensible flexible bellow integral with the free end of the tube and extending away from the rigidly mounted end; a mounting member integral with the elastically extensible bellows at its other end for receiving a valve core; a measuring indication on the tube; and a removable cup-shaped cap over the end of the mounting member and extending over the extensible bellows, the open end of the cap being adjacent the measuring indication on the tube when the tire is inflated to a preselected pressure.
Claim 6
Dependent Claim
44 words
A tire pressure indicator as defined in Claim 3 wherein the measuring indication is fixed on the tube; and further comprising means for selectively positioning the end skirt of the cap adjacent the measuring indication when the tire is inflated to a preselected pressure.
Claim 7
Dependent Claim
39 words
A tire pressure indicator as defined in claim 4 wherein means for adjusting comprises a cap having a preselected internal length so that the edge skirt of the cap is adjacent the indication when the cap is tightly installed.
Claim 8
Dependent Claim
29 words
A tire pressure indicator as defined in claim 3, wherein the elastically extensible member further comprises a resilient spring cooperating with the bellows for responding to tire inflation pressure.
Claim 9
Dependent Claim
40 words
A tire pressure indicator as defined in claim 3, wherein the tube further comprises: an adjustable ring, and wherein the measuring indication is on the ring; and detent means for resiliently resisting relative movement of the ring and the tube.
Claim 10
Dependent Claim
52 words
A tire pressure indicator as defined in claim 3, wherein the measuring indication is fixed on the tube and further comprising means for indicating a preselected tire inflation pressure by selectively positioning an edge skirt of the cap adjacent the measuring indication only when the tire is inflated to the preselected pressure.
Claim 11
Dependent Claim
121 words
A tire pressure indicator comprising: a stem; a cap mounted on the stem; a measuring indication on the stem adjacent an end skirt of the cap; an elastically extensible rubber bellows integral with a rigid portion of the stem at one end and connectable to the cap at the other end for effecting relative movement of the cap and stem; and means for selectively adjusting the relative positions of the cap and measuring indication for indicating a preselected tire inflation pressure comprising means for selectively positioning the edge skirt of the cap adjacent an indication when the tire is inflated to a preselected pressure; and a detent for resiliently resisting relative movement of the cap and an end of the bellows.
Claim 12
Dependent Claim
121 words
A tire pressure indicator comprising: a stem; a cap mounted on the stem; a measuring indication on the stem adjacent an end skirt of the cap; an elastically extensible rubber bellows integral with a rigid portion of the stem at one end and connectable to the cap at the other end for effecting relative movement of the cap and stem; and means for selectively adjusting the relative positions of the cap and measuring indication for indicating a preselected tire inflation pressure comprising means for selectively positioning the edge skirt of the cap adjacent an indication when the tire is inflated to a preselected pressure; and a detent for resiliently resisting relative movement of the cap and an end of the bellows.
Claim 13
Dependent Claim
26 words
A tire pressure indicator as defined in claim 9, wherein the cap extends over the elastically extensible member, thereby shielding the extensible member from external influences.
Claim 14
Dependent Claim
117 words
A tire pressure indicator comprising: a substantially rigid tube in fluid communication with the pressure containing portion of a tire; an elastically extensible member connected to the end of the tube; a mounting member connected to the elastically extensible member for receiving a valve core; a measuring indication on the tube; a cup-shaped cap mounted on the mounting member and extending over the extensible member; and means for indicating a preselected tire inflation pressure comprising means for selectively positioning an edge skirt of the cap relative to the measuring indication on the mounting member when the tire is inflated to a preselected pressure; and detent means for resiliently resisting relative movement between the cap and mounting member.
Claim 15
Dependent Claim
117 words
A tire pressure indicator comprising: a substantially rigid tube in fluid communication with the pressure containing portion of a tire; an elastically extensible member connected to the end of the tube; a mounting member connected to the elastically extensible member for receiving a valve core; a measuring indication on the tube; a cup-shaped cap mounted on the mounting member and extending over the extensible member; and means for indicating a preselected tire inflation pressure comprising means for selectively positioning an edge skirt of the cap relative to the measuring indication on the mounting member when the tire is inflated to a preselected pressure; and detent means for resiliently resisting relative movement between the cap and mounting member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |