Patent US1675594A successfully refreshed from Google Patents.
Patent US3697068A successfully refreshed from Google Patents.
US3697068A
Expired / Lapsed
US
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Non-planar ball rebound wall
Assignee: TRANLY WALLS AND MINI COURTS P
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Filing: 1969-09-09
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Granted: 1972-10-10
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Expires: 1989-09-09
Abstract
Abstract A wall structure for practicing tennis or similar games. The structure provides a rebound surface which is non-planar so that rebound characteristics are obtained which differ from those of a conventional flat practice wall. In particular the rebound surface defines a generally concave configuration coupled with indented or projecting formations so that generally a ball rebounds towards a center line of the wall but an unexpected bounce is obtained when the ball strikes a formation.
Inventors
- 👤 Julia P Mcdougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:56
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/0097; A63B69/0053; E; E04; E04H; E04H3/00; E04H3/10; E04H3/14; Y; Y10; Y10S; Y10S273/00; Y10S273/07; Y10S273/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
A practice wall structure defining a rebound surface against which play balls may be projected, said rebound surface including a general non-planar surface zone having a concave shape and being curved in both horizontal and vertical directions, said surface zone being provided with multi-faceted formations disposed at spaced locations in said surface zone, each facet of said multi-faceted formations being disposed in a plane different from said surface zone, the surfaces of said formations together with said general surface zone defining said rebound surface.
Claim 2
Dependent Claim
84 words
A practice wall structure defining a rebound surface against which play balls may be projected, said rebound surface including a general non-planar surface zone having a concave shape and being curved in both horizontal and vertical directions, said surface zone being provided with multi-faceted formations disposed at spaced locations in said surface zone, each facet of said multi-faceted formations being disposed in a plane different from said surface zone, the surfaces of said formations together with said general surface zone defining said rebound surface.
Claim 3
Dependent Claim
18 words
The wall stRucture of claim 1, wherein said multi-faceted formations are indented relative to said general surface zone.
Claim 4
Dependent Claim
18 words
The wall structure of claim 1, wherein said formations are in relief relative to said general surface zone.
Claim 5
Dependent Claim
21 words
The wall structure of claim 1, wherein said formations are selectively indented and in relief relative to said general surface zone.
Claim 6
Dependent Claim
12 words
The wall structure of claim 1, wherein said multi-faceted formations are polyhedral.
Claim 7
Dependent Claim
46 words
The wall structure of claim 1, further comprising a sheet member of polymer material defining said rebound surface, a backing member for said sheet, said sheet and backing member being spaced apart from each other, and a filler material located between said sheet and backing members.
Claim 8
Dependent Claim
28 words
The wall structure of claim 1, in which said sheet member includes a permanent marking thereon representing a tennis net, said rebound surface being defined above said marking.
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |