US3772944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flange facing machine
Assignee: DND CORP
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Filing: 1972-01-03
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Granted: 1973-11-20
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Expires: 1992-01-03
Abstract
Abstract A portable compact machine for resurfacing the faces of flanges on pipes and/or valves, wherein a base is releasably mounted in the bore of the pipe or valve in alignment therewith for accurate cutting of the flange face with a lathe tool, and wherein the tool is automatically fed radially as it is rotated by a power means mounted on a support column removably positioned on the base.
Inventors
- 👤 A Becker
- 👤 W Crook
- 👤 C Sherer
- 👤 M Lilly
- 👤 R Kinzbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:37
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/22; B23B3/26; B23B3/06; Y; Y10; Y10T; Y10T82/00; Y10T82/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A flange facing machine for facing a flange on a tubular member, comprising: a tubular support column having a base therewith adapted to fit within the bore of a tubular member having a flange thereon which is to be faced; attachment means for releasably securing said base to the inner walls of the tubular member; a rotatable tubular frame mounted on and surrounding said support column for rotation relative thereto and extending for substantially the full length of said support column; a facing tool secured to said rotatable frame for rotational movement therewith; power means for rotating said rotatable frame; means operable in response to the rotation of said rotatable frame for automatically and continuously feeding said facing tool substantially radially with respect to the bore of the tubular member as said tool is rotated; a power means support cap disposed at the upper end of said support column; and a single bolt vertically disposed and extending into the bore of said support column and releasably secured thereto to attach said support cap and power means to said support column, said bolt having an external diameter approximately the same size as the internal diameter of said bore of said support column.
Claim 2
Dependent Claim
201 words
A flange facing machine for facing a flange on a tubular member, comprising: a tubular support column having a base therewith adapted to fit within the bore of a tubular member having a flange thereon which is to be faced; attachment means for releasably securing said base to the inner walls of the tubular member; a rotatable tubular frame mounted on and surrounding said support column for rotation relative thereto and extending for substantially the full length of said support column; a facing tool secured to said rotatable frame for rotational movement therewith; power means for rotating said rotatable frame; means operable in response to the rotation of said rotatable frame for automatically and continuously feeding said facing tool substantially radially with respect to the bore of the tubular member as said tool is rotated; a power means support cap disposed at the upper end of said support column; and a single bolt vertically disposed and extending into the bore of said support column and releasably secured thereto to attach said support cap and power means to said support column, said bolt having an external diameter approximately the same size as the internal diameter of said bore of said support column.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |