US3895789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable quick-acting axial pressure absorbing chuck for a circular welding machine
Assignee: Mero AG
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Filing: 1973-08-06
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Granted: 1975-07-22
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Expires: 1993-08-06
Abstract
Abstract A clamping stud has a central cylindrical bearing section connected for axial movement in the central bore of a bushing that is maintained in a bearing block. A reduced diameter stud portion on one end of the clamping stud has a radially extensible and retractable clamp mechanism thereon and extends through the central aperture of a screw cap threaded on one end of the bushing, the screw cap having an external transverse-axial contact face. The opposite end of the clamping stud has an eccentric apparatus connected thereto for moving the clamping stud axially relative to the bushing and screw cap, whereby the reduced diameter stud portion can extend through the central bore of an end member of a rod element or the like and after the clamp mechanism is radially extended to engage the interior of the end member the eccentric apparatus urges the clamping stud inwardly of the bushing to firmly retain the end member against the transverse-axial contact face of the screw cap.
Inventors
- 👤 Max Mengeringhausen
- 👤 Hermann Quenzel
- 👤 Reinhold Gehrig
- 👤 Willi Spanheimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:05
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K37/00; B23K37/04; B23K37/053; B23K37/0538; Y; Y10; Y10S; Y10S279/00; Y10S279/904; Y10S279/905; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1045; Y10T279/1083; Y10T279/1091
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
331 words
A rotatable axial pressure absorbing quick-acting chuck for a circumferential welding machine for producing rod elements having an end member with a central bore comprising a bearing block, a clamping bush with a central bore mounted for rotation in said bearing block and fixed against axial movement relative thereto, a clamping stud having a cylindrical bearing section connected for axial movement in the central bore of said clamping bush, a screw cap having a central aperture threadably connected to one end of said clamping bush, said screw cap having an external end face forming a transverse-axial contact surface for an end member, a reduced diameter stud portion on one of said clamping stud extending through the central aperture of said screw cap and adapted to extend through the central bore of an end member, radially extensible and retractable clamp means connected on said reduced diameter stud portion and adapted to engage the interior of an end member when extended, and eccentric displacement means connected to the opposite end of said clamping stud to move said clamping stud axially and adapted to retain an end member placed on said reduced diameter stud against said transverse-axial contact surface when said clamp means is radially extended, removable bolt means connecting said eccentric displacement means to said clamping stud for releasably connecting said eccentric displacement means to said clamping stud; the central bore of said clamping bush selectively receiving one of a plurality of interchangeable clamping studs, each stud having a cylindrical bearing section of the same diameter for connection in the central bore of said clamping bush, and each clamping stud having a reduced diameter stud portion of a different size for extending through and engaging a respectivE end member from a plurality of end members of varying sizes having central bores of different sizes, whereby chucks of different sizes corresponding to the sizes of the respective end members to be welded to the rod element may be rapidly interchanged on said welding machine.
Claim 2
Dependent Claim
331 words
A rotatable axial pressure absorbing quick-acting chuck for a circumferential welding machine for producing rod elements having an end member with a central bore comprising a bearing block, a clamping bush with a central bore mounted for rotation in said bearing block and fixed against axial movement relative thereto, a clamping stud having a cylindrical bearing section connected for axial movement in the central bore of said clamping bush, a screw cap having a central aperture threadably connected to one end of said clamping bush, said screw cap having an external end face forming a transverse-axial contact surface for an end member, a reduced diameter stud portion on one of said clamping stud extending through the central aperture of said screw cap and adapted to extend through the central bore of an end member, radially extensible and retractable clamp means connected on said reduced diameter stud portion and adapted to engage the interior of an end member when extended, and eccentric displacement means connected to the opposite end of said clamping stud to move said clamping stud axially and adapted to retain an end member placed on said reduced diameter stud against said transverse-axial contact surface when said clamp means is radially extended, removable bolt means connecting said eccentric displacement means to said clamping stud for releasably connecting said eccentric displacement means to said clamping stud; the central bore of said clamping bush selectively receiving one of a plurality of interchangeable clamping studs, each stud having a cylindrical bearing section of the same diameter for connection in the central bore of said clamping bush, and each clamping stud having a reduced diameter stud portion of a different size for extending through and engaging a respectivE end member from a plurality of end members of varying sizes having central bores of different sizes, whereby chucks of different sizes corresponding to the sizes of the respective end members to be welded to the rod element may be rapidly interchanged on said welding machine.
Claim 3
Dependent Claim
37 words
A quick-acting chuck as set forth in claim 1 including a rotary drive means, said bearing block comprising a U-shaped bracket connecting said clamping bush and said clamping stud to said rotary drive means for rotation thereby.
Claim 4
Dependent Claim
317 words
A rotatable axial pressure absorbing quick-acting chuck for a circumferential welding machine for producing rod elements having an end member with a central bore, comprising a bearing block, a clamping bush with a central bore mounted for rotation in said bearing block and fixed against axial movement relative thereto, clamping stud means having a cylindrical bearing section connected for axial movement in the central bore of said clamping bush, a screw cap having a central aperture threadably connected to one end of said clamping bush, said screw cap having an external end face forming a transverse-axial contact surface for an end member, a reduced diameter stud portion on one end of said clamping stud means extending through the central aperture of said screw cap and adapted to extend through the central bore of an end member, radially extensible and retractable clamp means connected on said reduced diameter stud portion and adapted to engage the interior of an end member when extended, and eccentric displacement means releasably connected to the opposite end of said clamping stud means to move said clamping stud axially and adapted to retain an end member placed on said reduced diameter stud against said transverse-axial contact surface when said clamp means is radially extended; said eccentric displacement means comprising a bearing sleeve having an outer end face axially displaceably connected to said cylindrical bearing section of said clamping stud means, a pair of mutually opposed arms having guide apertures therein connected to said bearing sleeve and disposed on laterally opposite sides of said clamping stud means, a pair of eccentric discs having edges positioned to engage the outer end face of said bearing sleeve, and a pair of bearing pins connected to said opposite end of said clamping stud means and each oppositely extending through one of said eccentric discs and into guiding engagement with the guide aperture in one of said opposed arms.
Claim 5
Dependent Claim
317 words
A rotatable axial pressure absorbing quick-acting chuck for a circumferential welding machine for producing rod elements having an end member with a central bore, comprising a bearing block, a clamping bush with a central bore mounted for rotation in said bearing block and fixed against axial movement relative thereto, clamping stud means having a cylindrical bearing section connected for axial movement in the central bore of said clamping bush, a screw cap having a central aperture threadably connected to one end of said clamping bush, said screw cap having an external end face forming a transverse-axial contact surface for an end member, a reduced diameter stud portion on one end of said clamping stud means extending through the central aperture of said screw cap and adapted to extend through the central bore of an end member, radially extensible and retractable clamp means connected on said reduced diameter stud portion and adapted to engage the interior of an end member when extended, and eccentric displacement means releasably connected to the opposite end of said clamping stud means to move said clamping stud axially and adapted to retain an end member placed on said reduced diameter stud against said transverse-axial contact surface when said clamp means is radially extended; said eccentric displacement means comprising a bearing sleeve having an outer end face axially displaceably connected to said cylindrical bearing section of said clamping stud means, a pair of mutually opposed arms having guide apertures therein connected to said bearing sleeve and disposed on laterally opposite sides of said clamping stud means, a pair of eccentric discs having edges positioned to engage the outer end face of said bearing sleeve, and a pair of bearing pins connected to said opposite end of said clamping stud means and each oppositely extending through one of said eccentric discs and into guiding engagement with the guide aperture in one of said opposed arms.
Claim 6
Dependent Claim
303 words
A rotatable axial pressure absorbing quick-acting chuck for a circumferential welding machine for producing rod elements having an end member with a central bore, comprising a bearing block, a clamping bush having an outer end face and a central bore mounted for rotation in said bearing block and fixed against axial movement relative thereto, a clamping stud means having a cylindrical bearing section connected for axial movement in the central bore of said clamping bush, a screw cap having a central aperture threadably connected to one end of said clamping bush, said screw cap having an external end face forming a transverse-axial contact surface for an end member, a reduced diameter stud portion on one end of said clamping stud means extending through the central aperture of said screw cap and adapted to extend through the central bore of an end member, radially extensible and retractable clamp means connected on said reduced diameter stud portion and adapted to engage the interior of an end member when extended, and eccentric displacement means releasably connected to the opposite end of said clamping stud means to move said clamping stud means axially and adapted to retain an end member placed on said reduced diameter stud against said transverse-axial contact surface when said clamp means is radially extended; said eccentric displacement means comprising a pair of mutually opposed arms having guide apertures therein connected to said bearing block and disposed on laterally opposite sides of said clamping stud means, a pair of eccentric discs having edges positioned to engage the outer end face of said clamping bush, and a pair of bearing pins connected to said opposite end of said clamping stud means and each oppositely extending through one of said eccentric discs and into guiding engagement with the guide aperture in one of said opposed arms.
Claim 7
Dependent Claim
303 words
A rotatable axial pressure absorbing quick-acting chuck for a circumferential welding machine for producing rod elements having an end member with a central bore, comprising a bearing block, a clamping bush having an outer end face and a central bore mounted for rotation in said bearing block and fixed against axial movement relative thereto, a clamping stud means having a cylindrical bearing section connected for axial movement in the central bore of said clamping bush, a screw cap having a central aperture threadably connected to one end of said clamping bush, said screw cap having an external end face forming a transverse-axial contact surface for an end member, a reduced diameter stud portion on one end of said clamping stud means extending through the central aperture of said screw cap and adapted to extend through the central bore of an end member, radially extensible and retractable clamp means connected on said reduced diameter stud portion and adapted to engage the interior of an end member when extended, and eccentric displacement means releasably connected to the opposite end of said clamping stud means to move said clamping stud means axially and adapted to retain an end member placed on said reduced diameter stud against said transverse-axial contact surface when said clamp means is radially extended; said eccentric displacement means comprising a pair of mutually opposed arms having guide apertures therein connected to said bearing block and disposed on laterally opposite sides of said clamping stud means, a pair of eccentric discs having edges positioned to engage the outer end face of said clamping bush, and a pair of bearing pins connected to said opposite end of said clamping stud means and each oppositely extending through one of said eccentric discs and into guiding engagement with the guide aperture in one of said opposed arms.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |