Patent US3217524A successfully refreshed from Google Patents.
US3217524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube bender
Assignee: Parker Hannifin Corp
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Filing: 1962-07-16
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Granted: 1965-11-16
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Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 John H Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:20
CPC Classifications
B; B21; B21D; B21D9/00; B21D9/05; B21D9/07; B21D9/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A TUBE BENDING APPARATUS, SUPPORTING MEANS, A RADIUS BLOCK TURNABLE ABOUT AN AXIS ON THE SUPPORTING MEANS AND HAVING AN ARCUATE GROOVED SURFACE IN WHICH TO RECEIVE A TUBE TO BE BENT AND DETERMINE THE RADIUS OF THE BEND, MEANS TO CLAMP A TUBE TO TURN WITH THE RADIUS BLOCK, GROOVED SLIDE BLOCK MEANS TO COOPERATE WITH THE GROOVED RADIUS BLOCK IN ENCLOSING A TUBE AT THE BENDING POINT, MEANS SLIDABLY SUPPORTING THE SLIDE BLOCK MEANS FOR MOVEMENT WITH THE TUBE PORTION ENGAGED THEREBY DURING A BENDING PROCESS, MANDREL MEANS FOR INTERNALLY SUPPORTING THE TUBE DURING THE BENDING PROCESS, AND MEANS INCLUDING A BAND OPERATED HYDRAULIC ACTUATER FOR IMPARTING THE DESIRED TURNING MOVEMENT TO THE RADIUS BLOCK.
Claim 2
Dependent Claim
118 words
IN A TUBE BENDING APPARATUS, SUPPORTING MEANS, A RADIUS BLOCK TURNABLE ABOUT AN AXIS ON THE SUPPORTING MEANS AND HAVING AN ARCUATE GROOVED SURFACE IN WHICH TO RECEIVE A TUBE TO BE BENT AND DETERMINE THE RADIUS OF THE BEND, MEANS TO CLAMP A TUBE TO TURN WITH THE RADIUS BLOCK, GROOVED SLIDE BLOCK MEANS TO COOPERATE WITH THE GROOVED RADIUS BLOCK IN ENCLOSING A TUBE AT THE BENDING POINT, MEANS SLIDABLY SUPPORTING THE SLIDE BLOCK MEANS FOR MOVEMENT WITH THE TUBE PORTION ENGAGED THEREBY DURING A BENDING PROCESS, MANDREL MEANS FOR INTERNALLY SUPPORTING THE TUBE DURING THE BENDING PROCESS, AND MEANS INCLUDING A BAND OPERATED HYDRAULIC ACTUATER FOR IMPARTING THE DESIRED TURNING MOVEMENT TO THE RADIUS BLOCK.
References Cited (Backward Citations)
US2375310A
Cited
US2754880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |