Patent US4212334A successfully refreshed from Google Patents.
US4212334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire inflating unit
Assignee: Individual
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Filing: 1978-11-16
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Granted: 1980-07-15
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Expires: 1998-11-16
Abstract
Abstract A unit for inflating a vehicle tire is provided which functions to transmit air only if the tire contains at least a predetermined pressure. A signal is also provided which will function either to notify the user that air is being transmitted, or in the alternative, that air is not transmitted because a predetermined pressure was not present in the tire.
Inventors
- 👤 Walter H. Dudar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
B; B60; B60S; B60S5/00; B60S5/04; B60S5/043; B60S5/046; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/36; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
242 words
A device for inflating a vehicle tire comprising a valve adapted for movement from a normally closed position to an open position and having a valve inlet for connection to a source of compressed air and a valve outlet; control means adapted to block movement of said valve to the open condition unless the pressure in the tire exceeds a preset level, said control means including a control inlet for connection to the tire to be inflated, movable contact means responsive to pressure admitted by said control inlet and movable from a normal position to a preset limit position, adjustable biasing means adapted for biasing said movable contact means toward its normal position, and circuit means opened and closed by said movable contact means, said circuit means adapted for controlling movement of said valve to its open position when said circuit means is closed, and for moving said valve to its closed condition when said circuit means is open; and, air conduit means connecting said valve outlet to the tire to be inflated, whereby when the control inlet is connected to a vehicle tire to be inflated, if the pressure in the tire is above said preset level said contact means will move against said adjustable bias means to its preset limit position to close said circuit means thereby moving said valve to the open position permitting the passage of air from said source through said air conduit means into the tire
Claim 2
Independent Claim
242 words
A device for inflating a vehicle tire comprising a valve adapted for movement from a normally closed position to an open position and having a valve inlet for connection to a source of compressed air and a valve outlet; control means adapted to block movement of said valve to the open condition unless the pressure in the tire exceeds a preset level, said control means including a control inlet for connection to the tire to be inflated, movable contact means responsive to pressure admitted by said control inlet and movable from a normal position to a preset limit position, adjustable biasing means adapted for biasing said movable contact means toward its normal position, and circuit means opened and closed by said movable contact means, said circuit means adapted for controlling movement of said valve to its open position when said circuit means is closed, and for moving said valve to its closed condition when said circuit means is open; and, air conduit means connecting said valve outlet to the tire to be inflated, whereby when the control inlet is connected to a vehicle tire to be inflated, if the pressure in the tire is above said preset level said contact means will move against said adjustable bias means to its preset limit position to close said circuit means thereby moving said valve to the open position permitting the passage of air from said source through said air conduit means into the tire
Claim 3
Dependent Claim
18 words
A device according to claim 1 in which the pressure responsive movable contact means includes biasing spring means.
Claim 4
Dependent Claim
13 words
A device according to claim 2 in which the valve is a solenoid.
Claim 5
Dependent Claim
27 words
A device according to claim 3 in which the control means operates the solenoid in response to one limit position of the pressure responsive movable contact means.
Claim 6
Dependent Claim
16 words
A device according to claim 1 in which the valve control means is electrical control means.
References Cited (Backward Citations)
US1655003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |