US3885383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable band
Assignee: Individual
•
Filing: 1973-11-09
•
Granted: 1975-05-27
•
Expires: 1993-11-09
Abstract
Abstract An expandable band is disclosed which is contracted to the closed position by magnetic means. A single continuous wire extends along the entire length of the band and has successive portions of coiled configuration forming a plurality of successive coils which have parallel axes and which are arranged in a zig-zag pattern to form a series of outer coils which alternate with a series of inner coils. The wire portions at the ends of each coil of one series extend in opposite directions to the next adjacent coils of the other series. The coils can be magnetized, or permanent magnets can be used with the coils.
Inventors
- 👤 Shoichi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:25
CPC Classifications
B; B21; B21F; B21F43/00; A; A44; A44C; A44C5/00; A44C5/0007; A44C5/0023; A44C5/02; A44C5/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
In an elastic, flexible band for a bracelet, wristwatch, or the like, which is capable of expanding and contracting, a single continuous wire extending along the entire length of the band and having successive portions of coiled configuration forming a plurality of successive coils which have parallel axes and which are arranged in a zig-zag pattern to form a series of outer coils which alternate with a series of inner coils, and the wire portions at the ends of each coil of one series extending in opposite directions to the next adjacent coils of the other series, a plurality of said wires being situated with their coils coaxially arranged, and a plurality of retaining pins extending through at least some of the coaxially arranged coils for holding them together, at least some of said retaining pins being in the form of permanent magnets.
Claim 2
Dependent Claim
143 words
In an elastic, flexible band for a bracelet, wristwatch, or the like, which is capable of expanding and contracting, a single continuous wire extending along the entire length of the band and having successive portions of coiled configuration forming a plurality of successive coils which have parallel axes and which are arranged in a zig-zag pattern to form a series of outer coils which alternate with a series of inner coils, and the wire portions at the ends of each coil of one series extending in opposite directions to the next adjacent coils of the other series, a plurality of said wires being situated with their coils coaxially arranged, and a plurality of retaining pins extending through at least some of the coaxially arranged coils for holding them together, at least some of said retaining pins being in the form of permanent magnets.
Claim 3
Dependent Claim
46 words
The combination of claim 1 and wherein the permanent magnets are arranged with at least some of said permanent magnets having a polar orientation which is opposed to others of said permanent magnets having a polar orientation which is opposed to others of said permanent magnets.
Claim 4
Dependent Claim
125 words
In an elastic, flexible band for a bracelet, wristwatch, or the like, which is capable of expanding and contracting, a single continuous wire extending along the entire length of the band and having successive portions or coiled configuration forming a plurality of successive coils which have parallel axes and which are arranged in a zig-zag pattern to form a series of outer coils which alternate with a series of inner coils, and the wire portions at the ends of each coil of one series extending in opposite directions to the next adjacent coils of the other series, the wire being magnetic and at least some of the coils of one of said series being polarized to form north and south poles progressing along the band.
Claim 5
Dependent Claim
125 words
In an elastic, flexible band for a bracelet, wristwatch, or the like, which is capable of expanding and contracting, a single continuous wire extending along the entire length of the band and having successive portions or coiled configuration forming a plurality of successive coils which have parallel axes and which are arranged in a zig-zag pattern to form a series of outer coils which alternate with a series of inner coils, and the wire portions at the ends of each coil of one series extending in opposite directions to the next adjacent coils of the other series, the wire being magnetic and at least some of the coils of one of said series being polarized to form north and south poles progressing along the band.
References Cited (Backward Citations)
US2679147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |