Patent US3904205A successfully refreshed from Google Patents.
US3904205A
Expired / Lapsed
US
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Shuttlecock
Assignee: Individual
•
Filing: 1973-06-11
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Granted: 1975-09-09
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Expires: 1993-06-11
Abstract
Abstract A shuttlecock having a base and a single piece injection molded plastics skirt is provided, which has flight characteristics and feel closely resembling feather shuttlecocks. The molded flared skirt has lower and upper portions, the upper portion being provided with a plurality of radially spaced stems of channel section, such as V-, C- or U- section. Intermediate the stems of the upper skirt there is provided a lattice structure which defines a plurality of slots set at an acute angle to the longitudinal axis of the shuttlecock. For attachment of the base to the skirt, the latter is provided with an integrally formed spigot formation having at least two spaced legs, each having a radially extending projection engageable with an annular groove formed internally of the base.
Inventors
- 👤 Maurice Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:58
CPC Classifications
A; A63; A63B; A63B67/00; A63B67/18; A63B67/183; A63B67/187; A63B67/193
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
A shuttlecock skirt comprising a lower skirt and an upper skirt, the upper skirt being resilient and having a plurality of radially spaced longitudinally extending stems which are of channel section over at least a portion of their length and further having, intermediate said stems, a lattice structure which defines a plurality of angled slots which serve to introduce spin when the shuttlecock is in flight, the lower skirt comprising a plurality of radially spaced longitudinally extending stems of triangular section.
Claim 2
Dependent Claim
81 words
A shuttlecock skirt comprising a lower skirt and an upper skirt, the upper skirt being resilient and having a plurality of radially spaced longitudinally extending stems which are of channel section over at least a portion of their length and further having, intermediate said stems, a lattice structure which defines a plurality of angled slots which serve to introduce spin when the shuttlecock is in flight, the lower skirt comprising a plurality of radially spaced longitudinally extending stems of triangular section.
Claim 3
Dependent Claim
13 words
A skirt according to claim 1 in which the lattice structure is fluted.
Claim 4
Dependent Claim
28 words
A skirt according to claim 1 in which the extremity remote from the base has an undulating profile in the plane of the skirt immediately beneath the profile.
Claim 5
Dependent Claim
20 words
A skirt according to claim 3 in which the area of the undulating profile portion is at least 50% imperforate.
Claim 6
Dependent Claim
119 words
A shuttlecock having a base and a single piece injection molded plastics skirt providing flight characteristics and feel simulating the flight characteristics and feel of feather shuttlecocks, said skirt comprising a. a lower skirt comprising a plurality of radially spaced longitudinally extending stems of triangular configuration, b. a resilient upper skirt, said upper skirt having i. a plurality of radially spaced longitudinally extending stems which are of channel section over at least a portion of their length and, ii. intermediate said stems, a lattice structure which defines a plurality of angled slots which serve to introduce spin when the shuttlecock is in flight, and c. a spigot affixed to the lower skirt for securing the base to the skirt.
Claim 7
Dependent Claim
119 words
A shuttlecock having a base and a single piece injection molded plastics skirt providing flight characteristics and feel simulating the flight characteristics and feel of feather shuttlecocks, said skirt comprising a. a lower skirt comprising a plurality of radially spaced longitudinally extending stems of triangular configuration, b. a resilient upper skirt, said upper skirt having i. a plurality of radially spaced longitudinally extending stems which are of channel section over at least a portion of their length and, ii. intermediate said stems, a lattice structure which defines a plurality of angled slots which serve to introduce spin when the shuttlecock is in flight, and c. a spigot affixed to the lower skirt for securing the base to the skirt.
Claim 8
Dependent Claim
80 words
A shuttlecock skirt comprising a. a lower skirt, b. an upper skirt, c. at least the upper skirt being resilient and having a plurality of radially spaced longitudinally extending stems, d. a lattice structure intermediate said stems, which define a plurality of angled slots which serve to introduce spin when the shuttlecock is in flight, and e. a spigot formation to permit attachment of a base, the spigot formation comprising at least two legs, each having a radially extending portion.
Claim 9
Dependent Claim
80 words
A shuttlecock skirt comprising a. a lower skirt, b. an upper skirt, c. at least the upper skirt being resilient and having a plurality of radially spaced longitudinally extending stems, d. a lattice structure intermediate said stems, which define a plurality of angled slots which serve to introduce spin when the shuttlecock is in flight, and e. a spigot formation to permit attachment of a base, the spigot formation comprising at least two legs, each having a radially extending portion.
Claim 10
Dependent Claim
18 words
A skirt according to claim 6 in which the legs include a shoulder portion to locate an insert.
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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |