US3093934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion joint
Assignee: Dow Chemical Co
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Filing: 1960-05-13
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Granted: 1963-06-18
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Expires: 1980-05-13
Abstract
No abstract record available.
Inventors
- 👤 Richard R Underhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:10
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04D; E04D13/00; E04D13/15; E04D13/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A ROOF EXPANSION JOINT COMPRISING A PAIR OF SHEETS HAVING FIRST AND SECOND FACES AND ADJACENT SPACED EDGES, THE SHEETS BEING CAPABLE OF MOVEMENT RELATIVE TO ONE ANOTHER IN THE PLANE OF EACH SHEET, A RETAINING LIP AT THE ADJACENT EDGE OF EACH OF THE SHEETS AND GENERALLY NORMAL TO THE FIRST FACE A CANT STRIP SECURED TO SAID FIRST FACE, SPACED FROM THE RETAINING LIP, THE CANT STRIP BEING GENERALLY PARALLEL TO THE RETAINING LIP AND IN COOPERATIVE COMBINATION WITH THE LIP FORMING A RECESS, THE CANT STRIP HAVING AN INCLINED SURFACE, THE INCLINED SURFACE TERMINATING ADJACENT THE FIRST FACE AND REMOTE FROM THE RETAINING LIP, AND ALSO TERMINATING AT THE RECESS FACE, A GENERALLY U-SHAPED FLEXIBLE FOAM PLASTIC MEMBER HAVING THE TERMINAL PORTION OF ONE OF THE LEGS POSITIONED IN A RECESS OF ONE OF SAID SHEETS AND THE OTHER LEG IN THE OTHER RECESS OF THE OTHER SHEET, AND A FLEXIBLE SEALING STRIP PASSING OVER THE U-SHAPED MEMBER AND SECURED TO EACH SHEET AND CANT STRIP.
Claim 2
Dependent Claim
169 words
A ROOF EXPANSION JOINT COMPRISING A PAIR OF SHEETS HAVING FIRST AND SECOND FACES AND ADJACENT SPACED EDGES, THE SHEETS BEING CAPABLE OF MOVEMENT RELATIVE TO ONE ANOTHER IN THE PLANE OF EACH SHEET, A RETAINING LIP AT THE ADJACENT EDGE OF EACH OF THE SHEETS AND GENERALLY NORMAL TO THE FIRST FACE A CANT STRIP SECURED TO SAID FIRST FACE, SPACED FROM THE RETAINING LIP, THE CANT STRIP BEING GENERALLY PARALLEL TO THE RETAINING LIP AND IN COOPERATIVE COMBINATION WITH THE LIP FORMING A RECESS, THE CANT STRIP HAVING AN INCLINED SURFACE, THE INCLINED SURFACE TERMINATING ADJACENT THE FIRST FACE AND REMOTE FROM THE RETAINING LIP, AND ALSO TERMINATING AT THE RECESS FACE, A GENERALLY U-SHAPED FLEXIBLE FOAM PLASTIC MEMBER HAVING THE TERMINAL PORTION OF ONE OF THE LEGS POSITIONED IN A RECESS OF ONE OF SAID SHEETS AND THE OTHER LEG IN THE OTHER RECESS OF THE OTHER SHEET, AND A FLEXIBLE SEALING STRIP PASSING OVER THE U-SHAPED MEMBER AND SECURED TO EACH SHEET AND CANT STRIP.
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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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |