US3618630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure valve indicator
Assignee: Individual
•
Filing: 1969-07-09
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Granted: 1971-11-09
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Expires: 1989-07-09
Abstract
Abstract The pressure valve indicator disclosed herein includes a hollow housing for slidably mounting a plunger having two positions, one position being substantially within the housing and the other position being substantially extended out of a selected end of the housing. Resilient biasing means within the housing normally urge the plunger into the housing to its substantially enclosed position while the biasing means is yieldable to applied pneumatic pressure above a predetermined amount to permit the plunger to axially move within the housing to its extended position. Stop means are provided for limiting the axial movement of the plunger to determine the two positions. Coupling means are carried on one end of the housing for detachably connecting with a conventional tire valve stem and a check valve or core is included in the plunger permitting introduction of air into the tire via an air passageway in the plunger, housing and valve stem.
Inventors
- 👤 Anthony E Marcaccio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:42
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0496; B60C29/00; B60C29/06; B60C29/064; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/3662; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
352 words
A pneumatic pressure valve and indicator device adapted to be detachably carried on an inflation valve stem of a tire or tube having a predetermined pneumatic pressure rating comprising: a cylindrical housing having a central bore extending therethrough and opening at its opposite ends; a plunger slidably carried in said housing bore and having a portion extending exteriorly of said housing, said plunger having a first position wherein said extended portion is substantially extended from a selected end of said housing and a second position wherein said extended portion is substantially enclosed by said housing; resilient means carried in said housing bore operable to normally bias said plunger to its second pOsition and being yieldable in response to pneumatic pressure in excess of said predetermined rating to advance said plunger to its first position; stop means carried on said plunger and cooperating with an inwardly disposed circular flange on said housing selected end to arrest and limit movement of said plunger at said first and said second positions; said stop means including a first enlarged portion carried on said plunger exteriorly of said housing and a second enlarged portion carried on the opposite end of said plunger from said first enlarged portion and said plunger having a reduced diameter portion between said first and said second enlarged portions so as to define a pair of spaced-apart and opposing faces for abutting with said circular flange carried by said selected end of said housing to restrict movement of said plunger; said plunger including an open-ended central passageway and a check valve removably mounted in said plunger central passageway permitting the flow of air into said tire or tube for inflation; sealing means disposed between said valve stem and said housing; and said last-mentioned sealing means including a stationary, nonmovable plug having a central opening threadably secured to said housing within said housing bore in spaced relationship to the end of said housing carried on said valve stem and a pair of O-rings disposed between said valve stem and said plug and between said plug and a circular shoulder formed in said housing bore.
Claim 2
Dependent Claim
352 words
A pneumatic pressure valve and indicator device adapted to be detachably carried on an inflation valve stem of a tire or tube having a predetermined pneumatic pressure rating comprising: a cylindrical housing having a central bore extending therethrough and opening at its opposite ends; a plunger slidably carried in said housing bore and having a portion extending exteriorly of said housing, said plunger having a first position wherein said extended portion is substantially extended from a selected end of said housing and a second position wherein said extended portion is substantially enclosed by said housing; resilient means carried in said housing bore operable to normally bias said plunger to its second pOsition and being yieldable in response to pneumatic pressure in excess of said predetermined rating to advance said plunger to its first position; stop means carried on said plunger and cooperating with an inwardly disposed circular flange on said housing selected end to arrest and limit movement of said plunger at said first and said second positions; said stop means including a first enlarged portion carried on said plunger exteriorly of said housing and a second enlarged portion carried on the opposite end of said plunger from said first enlarged portion and said plunger having a reduced diameter portion between said first and said second enlarged portions so as to define a pair of spaced-apart and opposing faces for abutting with said circular flange carried by said selected end of said housing to restrict movement of said plunger; said plunger including an open-ended central passageway and a check valve removably mounted in said plunger central passageway permitting the flow of air into said tire or tube for inflation; sealing means disposed between said valve stem and said housing; and said last-mentioned sealing means including a stationary, nonmovable plug having a central opening threadably secured to said housing within said housing bore in spaced relationship to the end of said housing carried on said valve stem and a pair of O-rings disposed between said valve stem and said plug and between said plug and a circular shoulder formed in said housing bore.
Claim 3
Dependent Claim
28 words
The invention as defined in claim 1 wherein said resilient means comprises a helical expansion spring disposed about said plunger between said flanges and said housing selected end.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |