US3653305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: Elastomer Seals Inc
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Filing: 1970-09-02
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Granted: 1972-04-04
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Expires: 1990-09-02
Abstract
Abstract A comparatively wide, extruded elastomeric sealing strip, for sealing expansion grooves in bridges or the like, having a wall construction including a transversely oriented internal wall to resist lateral compression thereof and a criss-crossed arrangement of walls supporting the transverse wall from below, such wall construction having the unique feature of a sufficient number of internal walls as to obviate a length in any one such wall that might collapse under its own weight prior to completion of the curing of the elastomeric, and yet not having that great a number of walls as to complicate the fabrication of the device by extrusion.
Inventors
- 👤 Mario R Trieste
- 👤 Kenneth Hall
- 👤 Samuel Mccrady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:55
CPC Classifications
E; E01; E01D; E01D19/00; E01D19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
238 words
A sealing device for a clearance space of a comparatively large extent between two facing operative members, said sealing device being formed as an extruded elastomeric body having a wall construction of generally rectangular shape in cross section comprising an upper wall, a lower wall, and a pair of opposing side walls cooperating to define an internal volume generally corresponding in extent to that of said clearance space, a transversely oriented internal wall dividing said internal volume into upper and lower chambers and effective to resist the collapsing of said internal volume upon closing movement of said operative members towards each other, at least two spaced-apart support walls in said upper chamber connected between said upper and said transverse walls, a pair of bowed walls in opposite corners of said lower chamber each connected between said lower wall and one said side wall, a pair of criss-crossing support walls connected in supporting relation between said transverse wall and each of said bowed walls, and central depressions in both said upper wall and said lower wall in facing relation to each other so as to contribute to the flexing thereof in opposite directions into the rectangular shape of said extruded body, said spaced-apart support walls in said upper chamber being located on opposite sides of said central depression in said upper wall, whereby said wall construction has a compact, folded condition incident to closing movement of said operative members.
Claim 2
Dependent Claim
238 words
A sealing device for a clearance space of a comparatively large extent between two facing operative members, said sealing device being formed as an extruded elastomeric body having a wall construction of generally rectangular shape in cross section comprising an upper wall, a lower wall, and a pair of opposing side walls cooperating to define an internal volume generally corresponding in extent to that of said clearance space, a transversely oriented internal wall dividing said internal volume into upper and lower chambers and effective to resist the collapsing of said internal volume upon closing movement of said operative members towards each other, at least two spaced-apart support walls in said upper chamber connected between said upper and said transverse walls, a pair of bowed walls in opposite corners of said lower chamber each connected between said lower wall and one said side wall, a pair of criss-crossing support walls connected in supporting relation between said transverse wall and each of said bowed walls, and central depressions in both said upper wall and said lower wall in facing relation to each other so as to contribute to the flexing thereof in opposite directions into the rectangular shape of said extruded body, said spaced-apart support walls in said upper chamber being located on opposite sides of said central depression in said upper wall, whereby said wall construction has a compact, folded condition incident to closing movement of said operative members.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |