US3777281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal and method of making same
Assignee: Individual
•
Filing: 1970-08-03
•
Granted: 1973-12-04
•
Expires: 1990-08-03
Abstract
Abstract ontact of said two planar surfaces, heating said low melting point metal to its melting point for a sufficient period of time to cause, by capillary force a very thin layer of said metal to appear on and between planar surfaces, such that the tensile strength of said thin layer is greater than its bulk strength, and cooling said metal to solidify same.
Inventors
- 👤 U Hochuli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:55
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/08; C04; C04B; C04B37/00; C04B37/003; C04B37/006; H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2235/658; C04B2235/6581; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/124; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/40; C04B2237/50; C04B2237/52; C04B2237/59; C04B2237/592; C04B2237/61; C04B2237/70; C04B2237/708; C04B2237/72; C04B2237/76; C04B2237/765; C04B2237/88
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
22 words
The method defined in claim 1 wherein said low melting point metal is selected from the group comprising indium, indium-silver; indium-gold alloys.
Claim 2
Dependent Claim
32 words
The method defined in claim 1 wherein said low melting point metal is indium and said metal capable of being wetted in gold and each said body member is of another material.
Claim 3
Dependent Claim
21 words
The invention defined in claim 3 wherein the thickness of said indium metal between said surfaces is about 5 microns thick.
Claim 4
Dependent Claim
31 words
In a gas laser device, a seal made in accordance with the method of claim 4 and wherein the thickness of said indium between said surfaces is about 5 microns thick.
Claim 5
Dependent Claim
69 words
A hermetic seal between a pair of body members having a pair of planar, mutually abutting surfaces, each having perimetrical configurations corresponding to that of the seal, comprising a thin layer of substantially pure indium metal alloyed with metal on at least one of said surfaces and about 5 microns thick such that the tensile strength of said thin layer of indium metal is greater than its bulk strength.
Claim 6
Dependent Claim
49 words
In a gas laser device having body member with a gas chamber formed therein and a reflective member hermetically sealed to one end of said body member, the hermetic seal defined in claim 6 wherein said body member and said reflective member constitute said members having said abutting surfaces.
Claim 7
Dependent Claim
37 words
The invention defined in claim 6 wherein said metal on said at least one surface is gold and the other of said surfaces is a metal selected from the group consisting of gold, copper, silver and platinum.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |