US3879256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for vibration welding of sheet materials
Assignee: Crompton and Knowles Corp
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Filing: 1972-12-21
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Granted: 1975-04-22
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Expires: 1992-12-21
Abstract
Abstract Apparatus for welding thermoplastic sheet-like elements wherein two rows of staggered vibration transmitting members engage one side of the sheet-like elements against anvils located on the other side of said sheet-like elements to produce welds therebetween. Means are provided to advance the sheet-like elements between the anvils and vibration transmitting members, and compression members are located in the spaces between members in the first row of vibration transmitting members with which said sheet-like elements come into contact for maintaining the sheet-like elements uniformly flat across the width thereof.
Inventors
- 👤 Jr Edgar C Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:21
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B32; B32B; B32B7/00; B32B7/04; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/345; B29C66/3452; B29C66/40; B29C66/41; B29C66/45; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/8145; B29C66/81463; B29C66/81467; B29C66/81469; B29C66/82; B29C66/822; B29C66/8221; B29C66/824; B29C66/8248; B29C66/83; B29C66/834; B29C66/8351; B29C66/83511; B29C66/72; B29C66/729; B29C66/8341; B29C66/83411; B29C66/83415; B32B2310/00; B32B2310/028
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
205 words
Apparatus for joining two or more sheet-like elements, at least one of which contains a thermoplastic material comprising: a. a frame; b. means to advance the sheet-like elements to be joined from a source of supply; c. a plurality of spaced ultrasonic vibration transmitting members mounted within said frame, each having a working surface in contact with one side of said sheet-like elements, each member being offset from adjacent members in the longitudinal direction of said sheet-like elements to form at least first and second parallel rows of vibration transmitting members, said rows extending along axes which are transverse to the longitudinal axis of said sheet-like elements; d. anvil means mounted within said frame and located on the other side of said sheet-like elements for cooperating with said working surfaces; and e. Compression members spaced from, and located between, the transmitting members of the first row of said vibration transmitting members, which row is the first vibration transmitting members to come in contact with said sheet-like elements during the operation of said advancing means, said members being in compressive engagement with said sheet-like elements along the longitudinal axis of said first row for maintaining said sheet-like elements substantially uniformly flat across the entire width thereof.
Claim 2
Dependent Claim
205 words
Apparatus for joining two or more sheet-like elements, at least one of which contains a thermoplastic material comprising: a. a frame; b. means to advance the sheet-like elements to be joined from a source of supply; c. a plurality of spaced ultrasonic vibration transmitting members mounted within said frame, each having a working surface in contact with one side of said sheet-like elements, each member being offset from adjacent members in the longitudinal direction of said sheet-like elements to form at least first and second parallel rows of vibration transmitting members, said rows extending along axes which are transverse to the longitudinal axis of said sheet-like elements; d. anvil means mounted within said frame and located on the other side of said sheet-like elements for cooperating with said working surfaces; and e. Compression members spaced from, and located between, the transmitting members of the first row of said vibration transmitting members, which row is the first vibration transmitting members to come in contact with said sheet-like elements during the operation of said advancing means, said members being in compressive engagement with said sheet-like elements along the longitudinal axis of said first row for maintaining said sheet-like elements substantially uniformly flat across the entire width thereof.
Claim 3
Dependent Claim
204 words
APPARATUS FOR JOINING TWO OR MORE SHEET-LIKE ELEMENTS, AT LEAST ONE OF WHICH CONTAINS A THERMOPLASTIC MATERIAL COMPRISING: A. A FRAME; B. MEANS TO ADVANCE THE SHEET-LIKE ELEMENTS TO BE JOINED FROM A SOURCE OF SUPPLY; C. A PLURALITY OF SPACED ULTRASONIC VIBRATION TRANSMITTING MEMBERS MOUNTED WITHIN SAID FRAME, EACH HAVING A WORKING SURFACE IN CONTACT WITH ONE SIDE OF SAID SHEET-LIKE ELEMENTS EACH MEMBER BEING OFFSET FROM ADJACENT MEMBERS IN THE LONGITUDINAL DIRECTION OF SAID SHEET-LIKE ELEMENTS TO FORM AT LEAST FIRST AND SECOND PARALLEL ROWS OF VIBRATION TRANSMITTING MEMBERS, SAID ROW EXTENDING ALONG AXES WHICH ARE TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID SHEET-LIKE ELEMENTS; A. ANVIL MEANS MOUNTED WITHIN SAID FRAME AND LOCATED ON THE OTHER SIDE OF SAID SHEET-LIKE ELEMENTS FOR COOPERATING WITH SAID WORKING SURFACES; AND E. COMPRESSION MEMBERS SPACED FROM, AND LOCATED BETWEEN, THE TRANSMITTING MEMBERS OF THE ROW OF SAID VIBRATIONS TRANSMITTING MEMBERS, WHICH ROW IS THE FIRST VIBRATION TRANSMITTING MEMBERS TO COME IN CONTACT WITH SAID SHEET-LIKE ELEMENTS DURING THE OPERATION OF SAID ADVANCING MEANS, SAID MEMBERS BEING IN COMPRESSIVE ENGAGEMENT WITH SAID SHEET-LIKE ELEMENTS ALONG THE LONGITUDINAL AXIS OF SAID FIRST ROW FOR MAINTAINING SAID SHEETLIKE ELEMENTS SUBSTANTIALLY UNIFORMLY FLAT ACROSS THE ENTIRE WIDTH THEREOF.
Claim 4
Dependent Claim
204 words
APPARATUS FOR JOINING TWO OR MORE SHEET-LIKE ELEMENTS, AT LEAST ONE OF WHICH CONTAINS A THERMOPLASTIC MATERIAL COMPRISING: A. A FRAME; B. MEANS TO ADVANCE THE SHEET-LIKE ELEMENTS TO BE JOINED FROM A SOURCE OF SUPPLY; C. A PLURALITY OF SPACED ULTRASONIC VIBRATION TRANSMITTING MEMBERS MOUNTED WITHIN SAID FRAME, EACH HAVING A WORKING SURFACE IN CONTACT WITH ONE SIDE OF SAID SHEET-LIKE ELEMENTS EACH MEMBER BEING OFFSET FROM ADJACENT MEMBERS IN THE LONGITUDINAL DIRECTION OF SAID SHEET-LIKE ELEMENTS TO FORM AT LEAST FIRST AND SECOND PARALLEL ROWS OF VIBRATION TRANSMITTING MEMBERS, SAID ROW EXTENDING ALONG AXES WHICH ARE TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID SHEET-LIKE ELEMENTS; A. ANVIL MEANS MOUNTED WITHIN SAID FRAME AND LOCATED ON THE OTHER SIDE OF SAID SHEET-LIKE ELEMENTS FOR COOPERATING WITH SAID WORKING SURFACES; AND E. COMPRESSION MEMBERS SPACED FROM, AND LOCATED BETWEEN, THE TRANSMITTING MEMBERS OF THE ROW OF SAID VIBRATIONS TRANSMITTING MEMBERS, WHICH ROW IS THE FIRST VIBRATION TRANSMITTING MEMBERS TO COME IN CONTACT WITH SAID SHEET-LIKE ELEMENTS DURING THE OPERATION OF SAID ADVANCING MEANS, SAID MEMBERS BEING IN COMPRESSIVE ENGAGEMENT WITH SAID SHEET-LIKE ELEMENTS ALONG THE LONGITUDINAL AXIS OF SAID FIRST ROW FOR MAINTAINING SAID SHEETLIKE ELEMENTS SUBSTANTIALLY UNIFORMLY FLAT ACROSS THE ENTIRE WIDTH THEREOF.
Claim 5
Dependent Claim
24 words
The apparatus as described in claim 1 wherein said compression members are mounted for movement into and out of contact with said sheet-like elements.
Claim 6
Dependent Claim
21 words
The apparatus as described in claim 2 comprising means for varying the pressure of said compression members against the sheet-like elements.
Claim 7
Dependent Claim
64 words
The apparatus as described in claim 3 wherein the means for varying the pressure of said compression members comprises an arm and a weight slidably mounted on said arm, said arm being operatively connected to said compression members so that the pressure exerted by said compression members against said sheet-like elements will vary in accordance with the position of the weight on said arm.
Claim 8
Dependent Claim
29 words
The apparatus as described in claim 2 wherein said compression members are swingably mounted from a stationary pivot for movement into and out of contact with said sheet-like elements.
Claim 9
Dependent Claim
71 words
The apparatus as described in claim 2 wherein the mounting means for said compression members comprises: a. a pair of levers pivotally mounted to said frame at opposite ends of said rows of vibration transmitting members; b. a connector extending between said levers and connected to said levers at points spaced from the pivot points of said levers; and c. supporting brackets for rigidly connecting said compression members to said connector.
Claim 10
Dependent Claim
60 words
The apparatus as described in claim 6 comprising: a. an arm fixed to said connector and extending therefrom in the same direction as said compression members; and b. a weight slidably mounted on said arm for varying the amount of pressure of said compression members on said sheet-like elements in accordance with the position of said weight on said arm.
Claim 11
Dependent Claim
17 words
The apparatus as described in claim 1 wherein said compression members are of a nonmetallic fire-resistant material.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |