US3711347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing and locking a fastener
Assignee: Individual
•
Filing: 1971-07-07
•
Granted: 1973-01-16
•
Expires: 1991-07-07
Abstract
Abstract A fastener having an encircling mastic sealing and locking ring around the shank and positioned on or near the head of the fastener for sealing and locking the fastener in an apertured workpiece. The ring is formed of a compounded silicone resin capable of withstanding temperatures up to 400*F. for indefinite extended periods of time under vibrating conditions after final cure in situ, with the ring remaining dry and tack free, prior to final cure, at temperatures up to 180*F. or more.
Inventors
- 👤 D Wagner
- 👤 J Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/14; C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1018; F16B; F16B33/00; F16B33/004; F16B39/00; F16B39/22; F16B39/24; F16B43/00; F16B43/001; C09K2200/00; C09K2200/02; C09K2200/0239; C09K2200/0243; C09K2200/0252; C09K2200/026; C09K2200/0265; Y; Y10; Y10S; Y10S273/00; Y10S273/29; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
The method as set forth in claim 1 wherein said drying oven has a temperature range of 170*-200*F. and a time cycle of ten to fifteen minutes which will produce a firm tack-free coating of sealant material on the fastener and permit normal handling of the fastener without dislodgement of the sealant.
Claim 2
Dependent Claim
57 words
The method as set forth in claim 1 wherein said drying oven has a temperature range of 425*-500*F. and a time cycle of 5 to 7 minutes to drive off substantially all of the solvent to carry out a partial cure thereby forming a prepolymer which is a firm tack-free coating of sealant material on the fastener.
Claim 3
Dependent Claim
26 words
The method as set forth in claim 1 wherein the baking oven has a time cycle for the cure of the sealant of approximately 30 minutes.
Claim 4
Independent Claim
40 words
The method set forth in claims 1 wherein the sealing material is formed of a silicone resin including one or more of the following resins chosen from the group consisting of methyl silicone, phenyl silicone, methylphenyl silicone, or vinyl silicone.
References Cited (Backward Citations)
US2718485A
Cited
US3093177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |