Patent US1951531A successfully refreshed from Google Patents.
Patent US3917146A successfully refreshed from Google Patents.
US3917146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable vibratory welding apparatus
Assignee: Branson Ultrasonics Corp
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Filing: 1975-04-04
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Granted: 1975-11-04
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Expires: 1995-04-04
Abstract
Abstract The invention concerns a portable vibratory welding apparatus for welding together metal workpieces which generally are inaccessible for being disposed upon an anvil of a conventional, stationary vibratory welding apparatus. The anvil of the present apparatus is movable and coupled to a support by a leaf spring which provides a bias for causing a gap between the jaw surface of the anvil and a welding tip. Responsive to fluid pressure the anvil is caused to pivot upon a rounded surface disposed between the support and a spacer block of the spring. The pivotal motion of the anvil relative to the support closes the gap between the jaw surface and the welding tip while bowing the leaf spring. After welding is completed and the fluid pressure is released, the force of the leaf spring restores the jaw to its open position.
Inventors
- 👤 Donald R Culp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:49
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/10; B23K20/106
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
A vibratory welding apparatus comprising: a support; an electroacoustic converter supported by said support, said converter being constructed to be resonant along its longitudinal axis when energized with electrical energy of predetermined frequency for providing vibrations; a horn having a workpiece engaging surface coupled to said converter for transmitting vibrations from said converter to a workpiece in contact therewith; anvil means having a jaw; mounting means which include a leaf spring mounting said anvil means to said support for limited pivotal motion of said anvil means relative to said support, said leaf spring maintaining said anvil means in substantially play-free alignment relative to said support along said axis and providing a bias force for opposing the pivotal motion of said anvil means relative to said support, and motive means coupled between said support and said anvil means for causing when actuated said anvil means to undergo pivotal motion for moving said jaw toward said workpiece engaging surface and for providing a static clamping force upon a workpiece disposed between said anvil means and said workpiece engaging surface, said clamping force being substantially perpendicular to said axis.
Claim 2
Dependent Claim
186 words
A vibratory welding apparatus comprising: a support; an electroacoustic converter supported by said support, said converter being constructed to be resonant along its longitudinal axis when energized with electrical energy of predetermined frequency for providing vibrations; a horn having a workpiece engaging surface coupled to said converter for transmitting vibrations from said converter to a workpiece in contact therewith; anvil means having a jaw; mounting means which include a leaf spring mounting said anvil means to said support for limited pivotal motion of said anvil means relative to said support, said leaf spring maintaining said anvil means in substantially play-free alignment relative to said support along said axis and providing a bias force for opposing the pivotal motion of said anvil means relative to said support, and motive means coupled between said support and said anvil means for causing when actuated said anvil means to undergo pivotal motion for moving said jaw toward said workpiece engaging surface and for providing a static clamping force upon a workpiece disposed between said anvil means and said workpiece engaging surface, said clamping force being substantially perpendicular to said axis.
Claim 3
Dependent Claim
26 words
A vibratory welding apparatus as set forth in claim 1, and means disposed for limiting the motion of said jaw away from said workpiece engaging surface.
Claim 4
Dependent Claim
37 words
A vibratory welding apparatus as set forth in claim 1, said mounting means including at least one curvEd bearing surface disposed between said support and said anvil means for providing a pivot surface for said pivotal motion.
Claim 5
Dependent Claim
19 words
A vibratory welding apparatus as set forth in claim 3, said curved bearing surface comprising a round head screw.
Claim 6
Dependent Claim
26 words
A vibratory welding apparatus as set forth in claim 1, said motive means comprising a fluid actuated cylinder and a piston having a roller attached thereto.
Claim 7
Dependent Claim
52 words
A vibratory welding apparatus as set forth in claim 1, a roller and a ramp surface disposed between said anvil means and said support, and said motive means upon being energized causing said roller to move relative to said ramp surface whereby to cause said anvil means to undergo said pivotal motion.
Claim 8
Dependent Claim
32 words
A vibratory welding apparatus as set forth in claim 1, and adjusting means disposed between said jaw and anvil means for adjusting the opening between said jaw and said workpiece engaging surface.
Claim 9
Dependent Claim
50 words
A vibratory welding apparatus as set forth in claim 1, and additional leaf springs coupling said electroacoustic converter to said support at antinodal regions of longitudinal motion said additional leaf springs being yielding along the longitudinal axis of the vibratory motion but substantially rigid in a direction substantially perpendicular thereto.
Claim 10
Dependent Claim
30 words
A vibratory welding apparatus as set forth in claim 1, said leaf spring being secured with one end to said support and with the other end to said anvil means.
Claim 11
Dependent Claim
34 words
A vibratory welding apparatus as set forth in claim 9, said respective ends of said leaf spring being secured to said support and said anvil means by means of clamp plates and screw means.
Claim 12
Dependent Claim
38 words
A vibratory welding apparatus as set forth in claim 1, said leaf spring being bowed when said jaw has moved toward said workpiece engaging surface and is substantially planar when said jaw is in its normally non-pivoted position.
References Cited (Backward Citations)
US3752380A
Cited
US3813006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |