Patent US4536964A successfully refreshed from Google Patents.
US4536964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe thread gauge
Assignee: Individual
•
Filing: 1983-09-23
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Granted: 1985-08-27
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Expires: 2003-09-23
Abstract
Abstract A pipe thread gauge for measuring the pitch diameter of threaded pipe and determining the taper on the inner and outer sides of the threaded ends of the pipe comprising: an elongated rail, a fixed blade block assembly mounted on the rail, a second blade block assembly slidably mounted on the rail and movable relative to the fixed blade block assembly, thread-engaging blades mounted on both the fixed and sliding blade block assemblies, set screws mounted in the second blade block assembly for engaging apertures provided in the rail at selected locations therealong for locking the slidable blade box assembly at such locations, and a digital read-out to visually display measurements of pitch diameter and/or taper.
Inventors
- 👤 Richard J. Lazes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:32
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/20; G01B3/38; G01B3/40
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
154 words
A pipe thread gauge comprising: a. an elongated rail; b. first blade block assembly fixedly mounted on said rail and having a first thread-engaging blade fixedly connected thereto, said blade extending substantially normal to said rail; c. second blade block assembly slidably mounted on said rail for longitudinal sliding movement therealong; d. means for locking said second blade block assembly at selected locations along said rail; e. second thread-engaging blade fixedly connected to said second blade block assembly and set at a selected angle to said first thread-engaging blade thereby defining an open throat capable of receiving the threaded end of said pipe; and f. means slidable along said first blade block assembly for engaging said end of the threaded end portion of said pipe for visually indicating the length occupied by the threads on said threaded end portion of said pipe, wherein said visual indicating means provides a digital read-out of said length.
Claim 2
Dependent Claim
154 words
A pipe thread gauge comprising: a. an elongated rail; b. first blade block assembly fixedly mounted on said rail and having a first thread-engaging blade fixedly connected thereto, said blade extending substantially normal to said rail; c. second blade block assembly slidably mounted on said rail for longitudinal sliding movement therealong; d. means for locking said second blade block assembly at selected locations along said rail; e. second thread-engaging blade fixedly connected to said second blade block assembly and set at a selected angle to said first thread-engaging blade thereby defining an open throat capable of receiving the threaded end of said pipe; and f. means slidable along said first blade block assembly for engaging said end of the threaded end portion of said pipe for visually indicating the length occupied by the threads on said threaded end portion of said pipe, wherein said visual indicating means provides a digital read-out of said length.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1 wherein said first and second thread engaging blades further comprise: a. relatively blunt edges interior of said open throat; and b. relatively sharp edges exterior of said open throat.
Claim 4
Dependent Claim
47 words
The apparatus of claim 1 wherein said means for locking said second blade block assembly at selected locations along said rail comprises: a. apertures provided in said rail at selected locations therealong; and b. means threadably mounted in said second blade block assembly for engaging said apertures.
Claim 5
Dependent Claim
19 words
The apparatus of claim 3 wherein said means for engaging said apparatus are set screws extending through said rail.
Claim 6
Dependent Claim
51 words
A pipe thread gauge comprising: a. an elongated rail; b. first blade block assembly fixedly mounted on said rail and having a first thread-engaging blade fixedly connected thereto, said blade extending substantially normal to said rail; c. second blade block assembly slidably mounted on said rail for longitudinal sliding movement therealong;
Claim 7
Dependent Claim
51 words
A pipe thread gauge comprising: a. an elongated rail; b. first blade block assembly fixedly mounted on said rail and having a first thread-engaging blade fixedly connected thereto, said blade extending substantially normal to said rail; c. second blade block assembly slidably mounted on said rail for longitudinal sliding movement therealong;
Claim 8
Dependent Claim
121 words
d. means for locking said second blade block assembly at selected locations along said rail; e. second thread-engaging blade fixedly connected to said second blade block assembly and set at a pre-selected angle to said first thread engaging blade, thereby defining an open throat capable of receiving the threaded end portion of a pipe; and f. means slidable along said first blade block assembly for engaging said end of the threaded end portion of said pipe for visually indicating the length occupied by the threads on said threaded end portion of said pipe, wherein said visual indicating means provides a digital read-out of said length; g. said first and second thread-engaging blades further comprise relatively sharp edges exterior of said throat.
Claim 9
Dependent Claim
121 words
d. means for locking said second blade block assembly at selected locations along said rail; e. second thread-engaging blade fixedly connected to said second blade block assembly and set at a pre-selected angle to said first thread engaging blade, thereby defining an open throat capable of receiving the threaded end portion of a pipe; and f. means slidable along said first blade block assembly for engaging said end of the threaded end portion of said pipe for visually indicating the length occupied by the threads on said threaded end portion of said pipe, wherein said visual indicating means provides a digital read-out of said length; g. said first and second thread-engaging blades further comprise relatively sharp edges exterior of said throat.
Claim 10
Dependent Claim
29 words
The apparatus of claim 5 wherein said visual indicating means provides a digital read-out of said length occupied by the threads of said threaded end portion of said pipe.
Claim 11
Dependent Claim
21 words
The apparatus of claim 5 wherein said first and second thread-engaging blades further comprise relatively blunt edges interior of said throat.
Claim 12
Dependent Claim
22 words
The apparatus of claim 5 wherein said said first and second thread-engaging blades further comprise relatively blunt edges interior of said throat.
Claim 13
Dependent Claim
47 words
The apparatus of claim 5 wherein said means for locking said second blade block assembly at selected locations along said rail comprises: a. apertures provided in said rail at selected locations therealong; and b. means threadably mounted in said second blade block assembly for engaging said apertures.
Claim 14
Dependent Claim
19 words
The apparatus of claim 9 wherein said means for engaging said apertures are set screws extending through said rail.
Claim 15
Dependent Claim
163 words
A pipe thread gauge comprising: a. an elongated rail; b. first blade block assembly fixedly mounted on said rail and having a first thread-engaging blade fixedly connected thereto, said blade extending substantially normal to said rail; c. second blade block assembly slidably mounted on said rail for longitudinal sliding movement therealong; d. means for locking said second blade block assembly at selected locations along said rail including apertures provided in said rail at selected locations therealong and means threadably mounted in said second blade block assembly for engaging said apertures; e. second thread-engaging blade fixedly connected to said second blade block assembly and set at selected angles to said first thread-engaging blade thereby defining an open throat capable of receiving said threaded pipe end; and f. means slidable along said first blade block assembly for engaging said end of the threaded end portion of said pipe for visually indicating the length occupied by the threads on said threaded end portion of said pipe.
Claim 16
Dependent Claim
163 words
A pipe thread gauge comprising: a. an elongated rail; b. first blade block assembly fixedly mounted on said rail and having a first thread-engaging blade fixedly connected thereto, said blade extending substantially normal to said rail; c. second blade block assembly slidably mounted on said rail for longitudinal sliding movement therealong; d. means for locking said second blade block assembly at selected locations along said rail including apertures provided in said rail at selected locations therealong and means threadably mounted in said second blade block assembly for engaging said apertures; e. second thread-engaging blade fixedly connected to said second blade block assembly and set at selected angles to said first thread-engaging blade thereby defining an open throat capable of receiving said threaded pipe end; and f. means slidable along said first blade block assembly for engaging said end of the threaded end portion of said pipe for visually indicating the length occupied by the threads on said threaded end portion of said pipe.
Claim 17
Dependent Claim
29 words
The apparatus of claim 11 wherein said visual indicating means provides a digital readout of the length occupied by the threads on said threaded end portion of said pipe.
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) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |