US4219937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gauge for measuring internal diameters
Assignee: Individual
•
Filing: 1979-08-31
•
Granted: 1980-09-02
•
Expires: 1999-08-31
Abstract
Abstract This invention relates to a gauge for measuring the internal diameter of a passage. The gauge comprises a tapered calibrated cone with an extendable rod member. The tapered cone is inserted within the passage and the rod is extended to contact the edge of interior surface of the passage adjacent the diameter to be determined.
Inventors
- 👤 Robert A. Lorenzini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:37
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/08; G01B5/12; G01B3/00; G01B3/46; G01B5/18
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
A gauge for measuring internal diameters comprising: a tapered cylindrical body portion for inserting within a passageway for contacting a wall portion of said passageway; a rod member moveably mounted on a surface of the cylindrical body for extending along said body and contacting a portion of said passage wall; a groove extending along said body for guiding said rod member; a raised portion on one end of said body to provide holding facility to said body; and a passageway extending through said raised portion for providing further guide means to said rod.
Claim 2
Dependent Claim
93 words
A gauge for measuring internal diameters comprising: a tapered cylindrical body portion for inserting within a passageway for contacting a wall portion of said passageway; a rod member moveably mounted on a surface of the cylindrical body for extending along said body and contacting a portion of said passage wall; a groove extending along said body for guiding said rod member; a raised portion on one end of said body to provide holding facility to said body; and a passageway extending through said raised portion for providing further guide means to said rod.
Claim 3
Dependent Claim
28 words
The gauge of claim 1 further including a plurality of gradations on the surface of said cylindrical body wherein each gradation corresponds to a diameter of said body.
Claim 4
Dependent Claim
19 words
The gauge of claim 2 wherein said gradations are separated from each other by a plurality of distance increments.
Claim 5
Dependent Claim
33 words
The gauge of claim 1 wherein said body portion has a first diameter at one end and a second diameter at an opposite end, said second diameter being larger than said first diameter.
Claim 6
Dependent Claim
19 words
The gauge of claim 4 wherein the first diameter is one-half inch and the second diameter is one inch.
Claim 7
Dependent Claim
15 words
The gauge of claim 1 wherein said rod further includes holding means at one end.
Claim 8
Dependent Claim
17 words
The gauge of claim 1 wherein the rod includes a plurality of dimensional gradations at one end.
Claim 9
Dependent Claim
13 words
The gauge of claim 1 wherein the body is made from a metal.
Claim 10
Dependent Claim
13 words
The gauge of claim 1 wherein the body portion is made from plastic.
Claim 11
Dependent Claim
14 words
The gauge of claim 1 wherein the rod member is made from a metal.
Claim 12
Dependent Claim
13 words
The gauge of claim 1 wherein the rod member is made from plastic.
Claim 13
Dependent Claim
13 words
The gauge of claim 1 wherein the body portion is made from wood.
Claim 14
Dependent Claim
13 words
The gauge of claim 1 wherein the rod member is made from wood.
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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |