US3751034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Game racket
Assignee: Emhart Industries Inc
•
Filing: 1970-11-02
•
Granted: 1973-08-07
•
Expires: 1990-11-02
Abstract
Abstract A tubular structure for a tennis or like game racket is formed from modified metal tubular members arranged in a spaced oval relationship forming a racket portion. The modified tubular members include an annular recess and gripping means for securing an annular formed ring or holding means to maintain the racket cross-strings permanently taut and in a spaced relationship.
Inventors
- 👤 E Fileger
- 👤 W Portz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:07
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/12; A63B49/022; A63B60/00; A63B49/028; A63B60/50; Y; Y10; Y10S; Y10S273/00; Y10S273/07
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
262 words
A tubular structure for holding cross-strings in a spaced relationship within the frame portion of a game racket, comprising: a tubular member having a continuous peripheral wall in transverse section, said peripheral wall being made up exclusively of said tubular member, said tubular member shaped into a loop portion; said tubular member having opposed reaches extending into a yoke portion; a cross member secured to said opposed reaches and located therebetween in said yoke portion defining with said tubular member an oval frame; said oval frame having an annular recess means; said annular recess means defined by inwardly extending gripping shoulder means, opposed sidewall portions on each side of said annular recess means, and an annular recess base surface all integrally formed into the inner periphery of said oval frame from an inner peripheral portion of said peripheral wall; annular string-holding means having locking portions and holding portions; said holding portions extending inwardly of said loop portion and having cross-strings engaging said holding portions; said locking portions having an outer surface disposed adjacent to said annular recess base surface and having an inner surface; said annular recess means and said shoulder means being of a depth to completely receive and encase said locking portions when said locking portions are placed within said annular recess means, and with at least one of the opposed sidewall portions of said shoulder means being bent above said inner surface of said locking portions thereby encasing said locking portions in said annular recess means whereby said string-holding means is rigidly and permanently secured to said tubular member.
Claim 2
Dependent Claim
262 words
A tubular structure for holding cross-strings in a spaced relationship within the frame portion of a game racket, comprising: a tubular member having a continuous peripheral wall in transverse section, said peripheral wall being made up exclusively of said tubular member, said tubular member shaped into a loop portion; said tubular member having opposed reaches extending into a yoke portion; a cross member secured to said opposed reaches and located therebetween in said yoke portion defining with said tubular member an oval frame; said oval frame having an annular recess means; said annular recess means defined by inwardly extending gripping shoulder means, opposed sidewall portions on each side of said annular recess means, and an annular recess base surface all integrally formed into the inner periphery of said oval frame from an inner peripheral portion of said peripheral wall; annular string-holding means having locking portions and holding portions; said holding portions extending inwardly of said loop portion and having cross-strings engaging said holding portions; said locking portions having an outer surface disposed adjacent to said annular recess base surface and having an inner surface; said annular recess means and said shoulder means being of a depth to completely receive and encase said locking portions when said locking portions are placed within said annular recess means, and with at least one of the opposed sidewall portions of said shoulder means being bent above said inner surface of said locking portions thereby encasing said locking portions in said annular recess means whereby said string-holding means is rigidly and permanently secured to said tubular member.
Claim 3
Dependent Claim
18 words
The tubular structure as set forth in claim 1 wherein said annular string-holding means is a formed ring.
Claim 4
Dependent Claim
58 words
The tubular structure as set forth in claim 1 wherein said annular string-holding means is a formed holding ring; portions of said ring comprising said string-holding portions and other portions of said ring comprising said locking portions; and the opposed sidewall portions of said shoulder means being crimped above the portions of said ring comprising said locking portions.
Claim 5
Dependent Claim
35 words
The tubular structure as set forth in claim 1 wherein said locking portions have indents at opposite sides thereof, said opposed sidewall portions of said shoulder means being bent into tight engagement with said indents.
Claim 6
Dependent Claim
32 words
The tubular structure as set forth in claim 1 wherein said string-holding means is a wirelike member bent alternately outwardly to form said locking portions and inwardly to form said holding portions.
Claim 7
Dependent Claim
36 words
The tubular structure as set forth in claim 5 wherein said tubular member is crimped adjacent to each said locking portion whereby said opposed sidewall portions of said shoulder means are pinched over said locking portions.
Claim 8
Dependent Claim
54 words
The tubular structure as set forth in claim 1 wherein said locking portions include alternately laterally off-set bends spaced along said annular string-holding means within said recess means and providing said inner surface; said opposed sidewall portions of said shoulder means being bent above said off-set bends on both sides of said recess means.
Claim 9
Dependent Claim
57 words
The tubular structure as set forth in claim 7 wherein said string-holding means is a wirelike member bent alternately outwardly to form said locking portions and inwardly to form said holding portions, portions of said wirelike member which are bent outwardly to form said locking portions being also bent laterally to provide said spaced, laterally off-set bends.
Claim 10
Dependent Claim
77 words
The tubulaR structure as set forth in claim 1 wherein said annular string-holding means comprises a plurality of spaced tabs having holding portions extending inwardly of said loop portion and locking portions disposed within said recess means; each said locking portion including a base portion projecting laterally at least in the direction of said one opposed sidewall portion, said base portion providing said inner surface over which said one sidewall portion of said shoulder means is bent.
Claim 11
Dependent Claim
85 words
The tubular structure as set forth in claim 1 wherein said annular string-holding means comprises a plurality of spaced tabs having holding portions extending inwardly of said loop portion and locking portions disposed within said recess means; each said locking portion including a base portion projecting laterally in the direction of said opposed sidewall portions of said shoulder means and providing said inner surface, said opposed sidewall portions being bent above said laterally projecting base portion; said holding portions being apertured to receive said cross-strings.
Claim 12
Dependent Claim
27 words
The tubular structure as set forth in claim 1 wherein said recess means comprises a substantially continuous recess formed in the inner periphery of said loop portion.
Claim 13
Dependent Claim
28 words
The tubular structure as set forth in claim 1 wherein said recess means comprise a plurality of spaced indentations formed into the inner periphery of said loop portion.
Claim 14
Dependent Claim
191 words
A game racket, comprising; a tubular member shaped into a loop portion; said tubular member having opposed reaches extending into a yoke portion; said tubular member having distal end portions extending in a substantially parallel relationship for receiving a handle; a cross member secured to said opposed reaches and located therebetween in said yoke portion defining with said tubular member an oval frame; said oval frame having an annular recess including gripping shoulders adjacent thereto formed in said frame on the inner periphery of said oval frame; holding means engaging the annular recess of said oval frame and secured thereto by said gripping shoulders; cross-strings secured to said holding means; a handle secured to said distal end portions; said holding means comprising a wirelike member bent alternately outwardly and inwardly with respect to the center of said oval frame to form locking and holding bends, respectively; said locking bends seated within said recess and said holding bends extending inwardly of said oval frame; portions of said wirelike member which forms said locking bends having indents at opposite sides thereof whereby said gripping shoulders tightly engage said locking bends at said indents.
Claim 15
Dependent Claim
191 words
A game racket, comprising; a tubular member shaped into a loop portion; said tubular member having opposed reaches extending into a yoke portion; said tubular member having distal end portions extending in a substantially parallel relationship for receiving a handle; a cross member secured to said opposed reaches and located therebetween in said yoke portion defining with said tubular member an oval frame; said oval frame having an annular recess including gripping shoulders adjacent thereto formed in said frame on the inner periphery of said oval frame; holding means engaging the annular recess of said oval frame and secured thereto by said gripping shoulders; cross-strings secured to said holding means; a handle secured to said distal end portions; said holding means comprising a wirelike member bent alternately outwardly and inwardly with respect to the center of said oval frame to form locking and holding bends, respectively; said locking bends seated within said recess and said holding bends extending inwardly of said oval frame; portions of said wirelike member which forms said locking bends having indents at opposite sides thereof whereby said gripping shoulders tightly engage said locking bends at said indents.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |