Patent US3696668A successfully refreshed from Google Patents.
US3696668A
Expired / Lapsed
US
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Combined air pressure and thread depth gauge for pneumatic tires
Assignee: Individual
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Filing: 1971-07-06
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Granted: 1972-10-10
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Expires: 1991-07-06
Abstract
Abstract The conventional pneumatic pressure gauge and the conventional tire depth gauge are combined into a single implement, the single indicator slide being A. ADAPTED TO BE PULLED OUT MANUALLY AND THEN THRUST INWARD TO A POINT DETERMINED BY THE DEPTH OF TREAD BY ENGAGEMENT WITH THE TIRE; B. ADAPTED TO BE THRUST OUTWARD BY PNEUMATIC PRESSURE WHEN APPLIED TO A TIRE VALVE AND AFTERWARD RETURNED MANUALLY TO NORMAL POSITION WITHIN THE IMPLEMENT BODY; AND C. GRADUATED IN TERMS OF PNEUMATIC PRESSURE ON ONE FACE AND IN TERMS OF TREAD DEPTH ON THE OPPOSITE FACE.
Inventors
- 👤 John L Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:02
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/18; G01L; G01L17/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A combined pneumatic pressure and tread depth gauge comprising, in combination, a. a gauge body having abutment surfaces engageable with spaced tread or road engaging areas of the tire; b. an indicator slide normally enclosed within the gauge body, and manually operable in and out of the body; c. pneumatic pressure responsive means within the gauge body constructed and arranged to thrust the indicator slide outward to an extent proportional to the pneumatic pressure applied to it by the air within a tire, and to leave the indicator so projected when the pressure is relieved; and d. means adapting the indicator slide to be pulled out manually preparatory to the taking of a tread depth reading; the indicator slide being graduated separately, in terms of pounds pressure per square inch and in terms of tread depth.
Claim 2
Dependent Claim
136 words
A combined pneumatic pressure and tread depth gauge comprising, in combination, a. a gauge body having abutment surfaces engageable with spaced tread or road engaging areas of the tire; b. an indicator slide normally enclosed within the gauge body, and manually operable in and out of the body; c. pneumatic pressure responsive means within the gauge body constructed and arranged to thrust the indicator slide outward to an extent proportional to the pneumatic pressure applied to it by the air within a tire, and to leave the indicator so projected when the pressure is relieved; and d. means adapting the indicator slide to be pulled out manually preparatory to the taking of a tread depth reading; the indicator slide being graduated separately, in terms of pounds pressure per square inch and in terms of tread depth.
Claim 3
Dependent Claim
58 words
A combined pneumatic pressure and tread depth gauge as set forth in claim 1 in which the gauge body includes broad shoulders located in a common datum plane, in which plane the indicator slide is readable for both pressure and tread depth purposes, said shoulders being adapted to span the gap between tread surface portions of a tire.
Claim 4
Dependent Claim
66 words
A combined pneumatic pressure and tread depth gauge as set forth in claim 2 in which the indicator slide is a comparatively broad thin member whose transverse dimension extends at right angles to the direction in which the shoulders extend, the pneumatic pressure graduations being provided on one side of the slide and the tread depth graduations being provided on the opposite side of the slide.
Claim 5
Dependent Claim
42 words
A combined pneumatic pressure and tread depth gauge as set forth in claim 3 in which the slide is marginally notched for fingernail withdrawal from the body and the body is correspondingly notched to give access to the notch in the slide.
Claim 6
Dependent Claim
31 words
A combined pneumatic pressure and tread depth gauge as set forth in claim 1 which further includes a spring clip for retaining the combined gauge to a garment of the user.
References Cited (Backward Citations)
US1866140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |