US3601080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire-pressure-warning device
Assignee: Individual
•
Filing: 1970-04-15
•
Granted: 1971-08-24
•
Expires: 1990-04-15
Abstract
Abstract A cylinder for attachment to an outboard dual wheel, a free member slidably mounted in said cylinder and dividing the cylinder into sealed compartments, a plate sealing off each end of the cylinder, springs urging the free member centrally of the cylinder, air-actuated signal means mounted on the cylinder, the cylinder having an air escape hole centrally thereof and normally covered by said free member and communicating with the signal means when the free member is moved not to cover the air hole, first inlet means communicating with one of said compartments, and second inlet means communicating with the other of said compartments.
Inventors
- 👤 William O Nygard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:52
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/3662
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
216 words
A device for signaling imbalance of air pressure in dualmounted pneumatic vehicle tires comprising a. a cylinder for attachment to an outboard dual wheel, b. a free member slidably mounted in said cylinder and dividing said cylinder into two sealed compartments, c. means sealing off each end of said cylinder, d. means urging said free member normally centrally of the cylinder, e. air-actuated signal means mounted on said cylinder, f. said cylinder having an air escape hole centrally thereof and normally covered by said free member and communicating with said signal means when the free member is moved to not cover the air hole whereby the signal means is responsive to air pressure in the cylinder, g. first inlet means communicating with one of said compartments and adapted for connection with one of a pair of dual tires, h. second inlet means communicating with the other of said compartments and adapted for connection with the other of a pair of dual tires, a reduction of air pressure in one compartment due to a loss of pressure in a tire connected thereto causing said free member to move toward the reduced pressure area and expose said air escape hole of said cylinder and allow the greater air pressure of the other compartment to actuate the signal means.
Claim 2
Independent Claim
216 words
A device for signaling imbalance of air pressure in dualmounted pneumatic vehicle tires comprising a. a cylinder for attachment to an outboard dual wheel, b. a free member slidably mounted in said cylinder and dividing said cylinder into two sealed compartments, c. means sealing off each end of said cylinder, d. means urging said free member normally centrally of the cylinder, e. air-actuated signal means mounted on said cylinder, f. said cylinder having an air escape hole centrally thereof and normally covered by said free member and communicating with said signal means when the free member is moved to not cover the air hole whereby the signal means is responsive to air pressure in the cylinder, g. first inlet means communicating with one of said compartments and adapted for connection with one of a pair of dual tires, h. second inlet means communicating with the other of said compartments and adapted for connection with the other of a pair of dual tires, a reduction of air pressure in one compartment due to a loss of pressure in a tire connected thereto causing said free member to move toward the reduced pressure area and expose said air escape hole of said cylinder and allow the greater air pressure of the other compartment to actuate the signal means.
Claim 3
Dependent Claim
31 words
The device of claim 1 in which a. said free member is a disk having b. sealing means on the periphery thereof for engagement with the inner surface of the cylinder.
Claim 4
Dependent Claim
20 words
The device of claim 2 in which said means for sealing off each end of the cylinder is a plate.
Claim 5
Dependent Claim
25 words
The device of claim 3 in which said urging means includes a. a spring positioned between said free member and each end of the cylinder.
Claim 6
Dependent Claim
57 words
The device of claim 4 in which said signal means includes a. a second cylinder connected to said cylinder and communicating with said air escape hole, b. a piston in said second cylinder having c. a shaft connected thereto and extending from said second cylinder d. said shaft having a signal member on the outer end thereof.
Claim 7
Dependent Claim
40 words
The device of claim 5 in which said first communicating inlet means includes a. a hose and b. an air valve carried thereby, and c. said second communicating inlet means includes a hose and d. an air valve carried thereby.
Claim 8
Dependent Claim
25 words
The device of claim 1 in which said urging means includes a. a spring positioned between said free member and each end of the cylinder.
Claim 9
Dependent Claim
56 words
The device of claim 1 in which said signal means includes a. a second cylinder connected to said cylinder and communicating with said air escape hole, b. a piston in said second cylinder having c. a shaft connected thereto and extending from said cylinder, d. said shaft having a signal member on the outer end thereof.
Claim 10
Dependent Claim
64 words
The device of claim 1 in which said air-actuated signal means includes a. a second cylinder, b. a piston in said second cylinder having c. a shaft connected thereto and extending from said second cylinder, d. said shaft having a signal member on the outer end thereof, e. said second cylinder having a hose connected thereto and said air escape hole of said cylinder.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |