Patent US3783232A successfully refreshed from Google Patents.
US3783232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the manufacture of hollow rod elements
Assignee: Mero AG
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Filing: 1972-08-09
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Granted: 1974-01-01
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Expires: 1992-08-09
Abstract
Abstract Apparatus for manufacturing hollow rod elements with a pair of end sections connected thereto, including guide bar means having two pairs of adjustable supports individually slidable thereon, the outermost supports carrying rotatable holding and clamping devices supporting the end sections above the guide bar means, with at least one of the outer supports having a motor connected thereto to rotate the clamping and holding devices and hollow rod element held therebetween, and the inner pair of supports carrying arc welding devices and stop members for axially centering the tube on the end sections.
Inventors
- 👤 M Mengeringhausen
- 👤 W Spanheimer
- 👤 H Quenzel
- 👤 R Gehrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:01
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
207 words
Apparatus for producing hollow rod elements having accurate dimensions in length from a hollow tube member aNd a pair of overlapping end caps comprising, a rigidly supported guide bed, a pair of supports mounted in opposed relation on each end of said guide bed, each of said supports connected for individual adjustable movement along said guide bed, a rotatable holding and clamping device connected to the outer support of each pair adapted to respectively securely grip one of the end caps, an electric arc welding device individual to each of the inner supports of each pair and adapted to be positioned by said inner supports adjacent the overlap of the end caps and the ends of the hollow tube extending between the end caps, stop means operatively connected to said guide bed and adjustable relative to said holding and clamping devices for axially centering the hollow tube on the end caps a drive motor connected to rotate at least one of said rotatable holding and clamping devices, welding circuit means for energizing said electric arc welding devices, and circuit means connected to said drive motor and said welding circuit means to synchronize the operation of the drive motor with the operation of the electric arc welding devices.
Claim 2
Dependent Claim
207 words
Apparatus for producing hollow rod elements having accurate dimensions in length from a hollow tube member aNd a pair of overlapping end caps comprising, a rigidly supported guide bed, a pair of supports mounted in opposed relation on each end of said guide bed, each of said supports connected for individual adjustable movement along said guide bed, a rotatable holding and clamping device connected to the outer support of each pair adapted to respectively securely grip one of the end caps, an electric arc welding device individual to each of the inner supports of each pair and adapted to be positioned by said inner supports adjacent the overlap of the end caps and the ends of the hollow tube extending between the end caps, stop means operatively connected to said guide bed and adjustable relative to said holding and clamping devices for axially centering the hollow tube on the end caps a drive motor connected to rotate at least one of said rotatable holding and clamping devices, welding circuit means for energizing said electric arc welding devices, and circuit means connected to said drive motor and said welding circuit means to synchronize the operation of the drive motor with the operation of the electric arc welding devices.
Claim 3
Dependent Claim
62 words
Apparatus as set forth in claim 1 wherein the stop means comprises, at least one stop element slidably attached to the guide bed and extending above the bed in the area of the overlap of the hollow tube member and end caps, and said stop element longitudinally movable to engage and axially center the hollow rod member between the two end caps.
Claim 4
Dependent Claim
34 words
Apparatus as set forth in claim 2 wherein the stop element comprises a reciprocatory plunger mounted on the end of an arm, the opposite end of the arm being secured to the inner support.
Claim 5
Dependent Claim
21 words
Apparatus as set forth in claim 3 wherein an electromagnet is connected to the plunger to impart the reciprocatory movement thereto.
Claim 6
Dependent Claim
33 words
Apparatus as set forth in claim 1, including a speed governor connected to the drive motor, whereby the speed of rotation of the hollow rod element can be adjusted according to its circumference.
Claim 7
Dependent Claim
22 words
Apparatus set set forth in claim 5, including individual synchronized drive motors connected to each of the rotatable holding and clamping devices.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |