US3584745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensible clothes line
Assignee: Hills Ltd
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Filing: 1969-05-06
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Granted: 1971-06-15
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Expires: 1989-05-06
Abstract
Abstract An extensible clothes line of the type having a series of lines secured to a spring loaded rotational drum, wherein the lines are fully extended from the drum and further tension does not rotate the drum against spring pressure when the spreader bar is engaged on its retention means, tensioning of the line being achieved by rotating the spreader bar to thereby wrap the lines around it.
Inventors
- 👤 Robert William Wrightson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:41
CPC Classifications
D; D06; D06F; D06F53/00; D06F53/04; D06F53/045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
159 words
An extensible clothesline of the type which has a series of lines secured at respective ends to a rotational drum and a spreader bar, comprising a central stem within the drum, a wire return spring surrounding the central stem, means securing one end of the wire return spring to the central stem and the other end to the drum, a cross head, a pair of s paced hook members on the crosshead forming retention means, said retention means being spaced from the drum and having abutment means cooperable with the spreader bar to releasably retain the spreader bar, the retention means further having a pawl pivoted on the crosshead, and a spring on the pawl urging the pawl into engagement with the spreader bar to form rotation limiting means engageable wit but releasable from the spreader bar, whereby the spreader bar when abutting the abutment means and rotated, winds the lines around the bar and thereby tensions the lines.
Claim 2
Dependent Claim
159 words
An extensible clothesline of the type which has a series of lines secured at respective ends to a rotational drum and a spreader bar, comprising a central stem within the drum, a wire return spring surrounding the central stem, means securing one end of the wire return spring to the central stem and the other end to the drum, a cross head, a pair of s paced hook members on the crosshead forming retention means, said retention means being spaced from the drum and having abutment means cooperable with the spreader bar to releasably retain the spreader bar, the retention means further having a pawl pivoted on the crosshead, and a spring on the pawl urging the pawl into engagement with the spreader bar to form rotation limiting means engageable wit but releasable from the spreader bar, whereby the spreader bar when abutting the abutment means and rotated, winds the lines around the bar and thereby tensions the lines.
Claim 3
Dependent Claim
24 words
An extensible clothesline according to claim 1 further comprising rectangular sleeves on the spreader bar engageable by legs on the pawl to limit rotation.
Claim 4
Dependent Claim
32 words
An extensible clothesline according to claim 1 further comprising a drum housing, end plates on the drum housing, end members on the drum, and bearings between respective end members and end plates.
Claim 5
Dependent Claim
35 words
An extensible clothesline according to claim 3 wherein the drum end members are provided with annular lands supporting the ends of the drum, and outstanding flanges extend radially outwardly from the ends of the drum.
Claim 6
Dependent Claim
20 words
An extensible clothesline according to claim 4 wherein the drum is a sheet metal member formed to a circular shape.
Claim 7
Dependent Claim
25 words
An extensible clothesline according to claim 1 wherein the diameter of the central stem is at least half the pitch diameter of the return spring.
Claim 8
Dependent Claim
101 words
An extensible clothesline according to claim 3 further comprising a pin extending through the walls of the central stem near one end, one said end plate having an inwardly directed boss containing a central aperture rotationally and slidably engaging over said end of the stem, the inner end face of the boss having bayonet cap slots engageable with the ends of said pin, the other end of said stem containing a further pin abutting a compression spring, the compression spring bearing against the other said end plate to thereby urge the first said pin into engagement with said bayonet cap slots.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |