US4076908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pole bolt seal for storage batteries
Assignee: VARTA Batterie AG
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Filing: 1976-07-08
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Granted: 1978-02-28
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Expires: 1996-07-08
Abstract
Abstract The pole bolt protruding through the cover aperture is surrounded by a section of shrink tubing. Adhesive is provided between bolt and tubing. A cap is placed over the bolt resting on the upper edge of the aperture, and a cast body fills the space between cap and shrink tubing.
Inventors
- 👤 Karl-Heinrich Backer
- 👤 Hermann Schlachta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:28
CPC Classifications
H; H01; H01M; H01M50/00; H01M50/10; H01M50/172; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
In a lead storage battery having pole bolts protruding through apertures in the battery cover, the improvement comprising; a section of shrink tubing shrunk onto the pole bolt shaft, a hollow cap slipped over the shaft and having its bottom edge resting on the upper edge of the cover aperture, a cast body filling the space between the inner wall of the cap and the shrink tubing, and a sealing ring between the shrink tubing and the inner edge of the cover aperture.
Claim 2
Dependent Claim
83 words
In a lead storage battery having pole bolts protruding through apertures in the battery cover, the improvement comprising; a section of shrink tubing shrunk onto the pole bolt shaft, a hollow cap slipped over the shaft and having its bottom edge resting on the upper edge of the cover aperture, a cast body filling the space between the inner wall of the cap and the shrink tubing, and a sealing ring between the shrink tubing and the inner edge of the cover aperture.
Claim 3
Dependent Claim
16 words
The battery of claim 1 further comprising an adhesive between pole bolt shaft and shrink tubing.
Claim 4
Dependent Claim
13 words
The battery of claim 2 wherein the adhesive is a hot melt adhesive.
Claim 5
Dependent Claim
18 words
The battery of claim 1 wherein the outside of the shrink tubing is coated with a bonding agent.
Claim 6
Dependent Claim
24 words
The battery of claim 1 having a pole bridge and wherein the shrink tubing section extends all the way down to the pole bridge.
Claim 7
Dependent Claim
48 words
The battery of claim 2 whose method of manufacture includes the steps of removing oxide from the pole bolt shafts, heating the shafts, applying the adhesive and the shrink tubing to the shafts, and shrinking the tubing until adhesive is extruded at the ends of the shrink tubing.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |