US3405019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum bonding process
Assignee: McDonnell Douglas Corp
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Filing: 1965-07-30
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Granted: 1968-10-08
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Christian A Seil
- 👤 Guy W Lively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/82; B29C66/826; B29C66/8266; B29C66/82661; B29C65/00; B29C65/48; B29C66/001; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/342; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/81; B29C66/814; B29C66/8145; B29C66/81455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
METHOD OF ADHESIVELY BONDING OR LAMINATING ELEMENTS TO ELIMINATE ENTRAPPED AIR THEREBETWEEN AND COMPRISING THE STEPS OF: APPLYING A LAYER OF ADHESIVE RESIN ON AN ELEMENT TO BE BONDED; FLEXIBLY CONFINING SAID ELEMENTS ESTABLISHING A FIRST ENCLOSED AREA; RIGIDLY CONFINING SAID FLEXIBLY CONFINED ELEMENTS ESTABLISHING A SECOND ENCLOSED AREA ENCOMPASSING SAID FIRST ENCLOSED AREA; SIMULTANEOUSLY EVACUATING GASES FROM THE FIRST ENCLOSED AREA AND THE SECOND ENCLOSED AREA WHEREBY THE ABSOLUTE GAS PRESSURE IN SAID FIRST AND SECOND AREAS IS APPROXIMATELY EQUAL AND AT A MINIMUM VALUE; AND VENTING SAID SECOND ENCLOSED AREA TO ATMOSPHERE WHILE MAINTAINING SAID FIRST ENCLOSED AREA AT THE MINIMUM VALUE THEREBY ALLOWING THE ATMOSPHERIC GAS PRESSURE TO FIRMLY FORCE SAID ELEMENTS TOGETHER, SANDWICHING SAID ADHESIVE RESIN AND CREATING A SUBSTANTIALLY VOID-FREE BONDED UNIT.
Claim 2
Dependent Claim
127 words
METHOD OF ADHESIVELY BONDING OR LAMINATING ELEMENTS TO ELIMINATE ENTRAPPED AIR THEREBETWEEN AND COMPRISING THE STEPS OF: APPLYING A LAYER OF ADHESIVE RESIN ON AN ELEMENT TO BE BONDED; FLEXIBLY CONFINING SAID ELEMENTS ESTABLISHING A FIRST ENCLOSED AREA; RIGIDLY CONFINING SAID FLEXIBLY CONFINED ELEMENTS ESTABLISHING A SECOND ENCLOSED AREA ENCOMPASSING SAID FIRST ENCLOSED AREA; SIMULTANEOUSLY EVACUATING GASES FROM THE FIRST ENCLOSED AREA AND THE SECOND ENCLOSED AREA WHEREBY THE ABSOLUTE GAS PRESSURE IN SAID FIRST AND SECOND AREAS IS APPROXIMATELY EQUAL AND AT A MINIMUM VALUE; AND VENTING SAID SECOND ENCLOSED AREA TO ATMOSPHERE WHILE MAINTAINING SAID FIRST ENCLOSED AREA AT THE MINIMUM VALUE THEREBY ALLOWING THE ATMOSPHERIC GAS PRESSURE TO FIRMLY FORCE SAID ELEMENTS TOGETHER, SANDWICHING SAID ADHESIVE RESIN AND CREATING A SUBSTANTIALLY VOID-FREE BONDED UNIT.
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) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |