Patent US3944153A successfully refreshed from Google Patents.
US3944153A
Expired / Lapsed
US
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Spindle and latch
Assignee: EECO Inc
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Filing: 1975-03-19
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Granted: 1976-03-16
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Expires: 1995-03-19
Abstract
Abstract A spindle and latch combination for removably retaining a reel. Keys drive the reel. Oppositely, a slot in the spindle holds the latch and a spring there urges the latch against the reel. Engagement or disengagement of the reel and spindle by one hand is possible. The latch may be embodied to pivot inboard or outboard of the reel.
Inventors
- 👤 Elliott C. Linker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:46
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/54; Y; Y10; Y10T; Y10T403/00; Y10T403/60; Y10T403/608
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A spindle for removably retaining a reel, comprising; a. a cylindrical spindle (1 or 21) having plural radial keys (4) at a common longitudinal position to drive said reel (3), and a longitudinal slot oppositely longitudinally disposed with respect to said keys, b. an end-pivoted latch (7 or 27) fitted within said slot (6), and c. a spring (9 or 29) engaging said latch and bearing upon said spindle to urge said latch radially outward to a limit set by the shape of the latch to axially and circumferentially retain said reel upon said spindle.
Claim 2
Dependent Claim
95 words
A spindle for removably retaining a reel, comprising; a. a cylindrical spindle (1 or 21) having plural radial keys (4) at a common longitudinal position to drive said reel (3), and a longitudinal slot oppositely longitudinally disposed with respect to said keys, b. an end-pivoted latch (7 or 27) fitted within said slot (6), and c. a spring (9 or 29) engaging said latch and bearing upon said spindle to urge said latch radially outward to a limit set by the shape of the latch to axially and circumferentially retain said reel upon said spindle.
Claim 3
Dependent Claim
29 words
The spindle of claim 1, in which; a. said spring is disposed within said slot under said latch, and has a hub colinear with the pivot of said latch.
Claim 4
Dependent Claim
45 words
The spindle of claim 2, in which; a. said spring is of the torsion type having tangentially extending ends, one of which bears upon said latch and the other of which bears upon said spindle, with said hub secured to said spindle (15 or 31).
Claim 5
Dependent Claim
37 words
The spindle of claim 1, in which; a. said latch (7 or 27) has a projection (11 or 32) to engage a keyway in said reel longitudinally opposite to keyways in said reel engaging said keys (4).
Claim 6
Dependent Claim
42 words
The spindle of claim 1, in which; a. said latch has a fulcrum (12) at the extremity of said latch slot, and the portion of said latch for engaging the reel is disposed toward said keys (4) with respect to said fulcrum.
Claim 7
Dependent Claim
19 words
The spindle of claim 5, in which; a. said fulcrum is disposed at substantially the surface of said spindle.
Claim 8
Dependent Claim
50 words
The spindle of claim 1, in which; a. said latch has a linear shape (27), has a fulcrum (31) at an intermediate point in said slot, and the portion (32) of said latch for engaging the reel is wholly disposed away from said keys (4) with respect to said fulcrum.
Claim 9
Dependent Claim
21 words
The spindle of claim 7, in which; a. said fulcrum (31) is disposed substantially at the center of said spindle, radially.
Claim 10
Dependent Claim
16 words
The spindle of claim 1, in which; a. said spring (29) is a double-wound torsion spring.
References Cited (Backward Citations)
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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) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |