Patent US4915382A successfully refreshed from Google Patents.
US4915382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compactible tennis racquet
Assignee: Explosives Technologies International Canada Ltd
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Filing: 1988-06-06
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Granted: 1990-04-10
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Expires: 2008-06-06
Abstract
Abstract A compactible tennis racquet having a head and a handle interconnecting by widely dispersed releaseable connections that will provide rigid coupling of the head to the handle, the connectors including handle extensions and head extensions, bolts for securing the handle extensions to the outer periphery of the head and bolts for connecting the head extensions to the handle extensions at a neck of the racquet and a hinge, provided at the neck of the racquet that provides for pivoting of the head with respect to the handle and that is locked against pivoting when the racquet is assembled for use.
Inventors
- 👤 Erik H. Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:41
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/035; A63B60/00; A63B60/0081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A compactible tennis racquet comprising a racquet head including a frame and a webbing within the frame, and head extensions extending from the periphery of the frame, at opposite sides thereof to a common central area; a handle, said handle including a gripping portion and extensions projecting therefrom and shaped to be tangential to the periphery of the frame of the head; means for releasably coupling each of said handle extensions to the frame of the head, at the periphery thereof; and means to releasably pivotally interconnect the head extensions and the handle extensions, at a neck of the racquet; wherein the means to releasably couple the handle extensions and the frame of the head comprise bolts carried by the head and pivotable into slots in the handle extensions, and nuts threaded onto the bolts.
Claim 2
Dependent Claim
135 words
A compactible tennis racquet comprising a racquet head including a frame and a webbing within the frame, and head extensions extending from the periphery of the frame, at opposite sides thereof to a common central area; a handle, said handle including a gripping portion and extensions projecting therefrom and shaped to be tangential to the periphery of the frame of the head; means for releasably coupling each of said handle extensions to the frame of the head, at the periphery thereof; and means to releasably pivotally interconnect the head extensions and the handle extensions, at a neck of the racquet; wherein the means to releasably couple the handle extensions and the frame of the head comprise bolts carried by the head and pivotable into slots in the handle extensions, and nuts threaded onto the bolts.
Claim 3
Dependent Claim
52 words
A compactible tennis racquet as in claim 1, wherein the means to releasably pivotally interconnect the head extensions and the handle extensions comprise a hinge having one hinge plate attached to the handle extensions, and a second hinge plate attached to the head extensions, and means to prevent folding of the hinge.
Claim 4
Dependent Claim
45 words
A compactible racquet as in claim 2, wherein the means to prevent folding of the hinge comprise a plate extending across the handle extensions and head extensions, and a bolt extending through said plate and threaded into the hinge plate attached to the head extensions.
Claim 5
Dependent Claim
43 words
A compactible racquet as in claim 2, wherein the means to prevent folding of the hinge comprises bolts, carried by the handle extensions, and pivotable into slots in the head extensions, and nuts carried by the bolts and adapted to be tightened thereon.
Claim 6
Dependent Claim
25 words
A compactible racquet as in claim 4, wherein extensions and the head extensions, to provide interlocked surfaces when the nuts are tightened on the bolts.
References Cited (Backward Citations)
US1808035A
Cited
FR1489007A
Cited
DE1903722A1
Cited
US4139194A
Cited
US4094505A
Cited
US4746119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |