Patent US4623902A successfully refreshed from Google Patents.
US4635471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardness testing device for pipes
Assignee: Energy Development Corp USA
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Filing: 1986-01-16
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Granted: 1987-01-13
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Expires: 2006-01-16
Abstract
Abstract A hardness tester for pipes comprising a positioning mechanism that presents the pipe to a multiple purpose testing head having a pre-programmed proportional control configuration that independently engages the pipe and determines the pipes relative position to that of the program controlled testing head which contains independent pre-programmed testing heads. The pipe is prepared for testing by cleaning a small test portion of the pipe, engagement of a load cell assembly to the clean pipe portion determining material hardness.
Inventors
- 👤 D. Brett Rogers
- 👤 Kevin T. Penner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:56
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42; G01N2203/00; G01N2203/0098; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/303864
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
A hardness testing device comprises in combination a testing and milling head assembly, means for positioning said testing and milling head assembly in position above a work piece, means for engaging, positioning and supporting a work piece, said testing and milling head assembly comprising a milling head having a drive means, a testing head positioned adjacent said milling head, load cells with in said testing head and means for control of said testing head position, duration, and relative spacing of both the milling head and testing head with said work piece, communication means in said testing head to said control means, clamping load cells on said testing head in communication with said control means of position.
Claim 2
Dependent Claim
116 words
A hardness testing device comprises in combination a testing and milling head assembly, means for positioning said testing and milling head assembly in position above a work piece, means for engaging, positioning and supporting a work piece, said testing and milling head assembly comprising a milling head having a drive means, a testing head positioned adjacent said milling head, load cells with in said testing head and means for control of said testing head position, duration, and relative spacing of both the milling head and testing head with said work piece, communication means in said testing head to said control means, clamping load cells on said testing head in communication with said control means of position.
Claim 3
Dependent Claim
36 words
The hardness testing device of claim 1 wherein said means for positioning said testing and milling head assembly comprises a support frame configuration having miltiple guide tracks and support work structures and clamping load cell means.
Claim 4
Dependent Claim
29 words
The hardness testing device of claim 1 wherein said means for engaging, positioning and supporting a work piece comprises a work piece fixture secured to a movable support stand.
Claim 5
Dependent Claim
19 words
The hardness testing device of claim 1 wherein said drive means for said milling head is a drive motor.
Claim 6
Dependent Claim
54 words
The hardness testing device of claim 1 wherein said means for controlling said positioning duration and relative spacing of both the milling head and testing head comprises an integrated multiple control system having a programmable controller, an axis positioning module and a servomotor drive system, means for programming said controller and a power source.
Claim 7
Dependent Claim
59 words
The hardness testing device of claim 5 wherein said programable controller receives and assimulates a variety of data input via feed back position comparison techniques, processing the same and comparing relative position of controlled axis parameters of head assemblies to pre-programmed positions and activation of said access position and servomotor drive system to achieve program objective in test sequence.
Claim 8
Dependent Claim
31 words
The hardness testing device of claim 1 wherein said testing head assembly comprises an internal load cell stabilizer positioning mechanism for advancing the load cell into registration with said work piece.
Claim 9
Independent Claim
82 words
The method of testing a work piece for material hardness comprising the steps of positioning the work piece to be tested, advancing a milling head to engage and clean a portion of the work piece, positioning a hardness tester head for engagement with the work piece, said hardness tester head comprising a clamping and testing load cell configuration on the work piece, computing relative values of hardness to a pre-determined standard and controlling said steps by a pre-programable controller and servodrive mechanism.
Claim 10
Independent Claim
82 words
The method of testing a work piece for material hardness comprising the steps of positioning the work piece to be tested, advancing a milling head to engage and clean a portion of the work piece, positioning a hardness tester head for engagement with the work piece, said hardness tester head comprising a clamping and testing load cell configuration on the work piece, computing relative values of hardness to a pre-determined standard and controlling said steps by a pre-programable controller and servodrive mechanism.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-12 | 1990-07-14 | 1991-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-12 | 1994-07-14 | 1995-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-12 | 1998-07-14 | 1999-01-13 | $7700.00 | Window Closed / Lapsed |