US3678178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature compression seal terminal
Assignee: AT&T Inc
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Filing: 1971-11-18
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Granted: 1972-07-18
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Expires: 1991-11-18
Abstract
Abstract A battery seal terminal capable of withstanding high pressures, thermal and mechanical shocks and temperatures in excess of 135* C. includes a plastic sealant bushing radially compressed against the battery lead post by an outer metal sleeve, and two pairs of retainer rings, the first ring of each pair having sufficient elasticity to be press-fitted between the lead post and the sleeve to abut against an end of the bushing, and the second ring of each pair being of a rigid material and abutting against the first ring. The lead post extends through the sleeve at either end thereof. A hub is located on the lead post near one end of the sleeve and a portion of the lead post which extends beyond the sleeve at the other end is threaded. The bushing is then axially compressed between the ring pairs by drawing down a nut on the threaded end of the lead post.
Inventors
- 👤 Philip Hubbauer
- 👤 Edwin John Mchenry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:38
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/306; H01M; H01M50/00; H01M50/10; H01M50/172; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
A high-temperature compression seal terminal comprising: (1) a cylindrical sealing bushing, (2) a lead-in conductor extending through the bushing, (3) an outer metallic sleeve encompassing the bushing, the sleeve being circumferentially deformed along its length to radially compress the bushing, and (4) means for both retaining the bushing within the sleeve and compressing the bushing axially; characterized in that the retaining means consists of two pairs of retaining rings, a first elastic ring of each pair in abutment against an end of the bushing, and a second rigid ring of each pair in abutment against the first ring.
Claim 2
Dependent Claim
98 words
A high-temperature compression seal terminal comprising: (1) a cylindrical sealing bushing, (2) a lead-in conductor extending through the bushing, (3) an outer metallic sleeve encompassing the bushing, the sleeve being circumferentially deformed along its length to radially compress the bushing, and (4) means for both retaining the bushing within the sleeve and compressing the bushing axially; characterized in that the retaining means consists of two pairs of retaining rings, a first elastic ring of each pair in abutment against an end of the bushing, and a second rigid ring of each pair in abutment against the first ring.
Claim 3
Dependent Claim
31 words
The terminal of claim 1 in which the external surface of the sealing bushing and the internal surface of the sleeve are threaded to provide additional retaining stresses within the bushing.
Claim 4
Dependent Claim
89 words
The terminal of claim 1 in which the lead-in conductor is a post having a hub abutting against the outside of the second ring at one end of the sleeve, and threaded on the other end to at least the other end of the sleeve to accept a threaded nut and in which the nut is drawn down on the threads to but against a second ring on the other end of the sleeve, so that the retainer rings are compressed against the bushing between the hub and nut.
Claim 5
Dependent Claim
23 words
The terminal of claim 1 in which the bushing material is polypropylene having a melt flow rate of 3.5 grams per 10 minutes.
Claim 6
Dependent Claim
57 words
The terminal of claim 1 in which the elastic ring material is a polytetrafluoroethylene having an elongation at 73* F. of from 100 to 200 percent, and a deformation under a 200 psi load in 24 hours at 78* F. of about 15 percent, and a heat-distortion temperature at a 66 psi load of about 25* F.
Claim 7
Dependent Claim
22 words
The terminal of claim 1 in which the rigid ring material is a high alumina ceramic containing at least 99.5 percent Al203.
References Cited (Backward Citations)
US1941397A
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US2542916A
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US2794062A
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US2957041A
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US3109055A
Cited
US3472701A
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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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |