US3839824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable safety guard for loading docks and platforms
Assignee: Individual
•
Filing: 1973-03-12
•
Granted: 1974-10-08
•
Expires: 1993-03-12
Abstract
Abstract A removable safety guard for loading docks, platforms and the like. The opposite ends of a flexible plastic cable are attached to an enclosed spring-loaded reel in which they are retracted when not in use. The reel enclosure is mounted on a main post disposed adjacent to one side of the protected area. A cable pull is used to unwind the cable from the reel and attach it to a terminal post disposed adjacent to the other side of the protected area. The cable provides two vertically spaced lengths of cable extending across the protected area. For larger widths, a removable intermediate post may be used.
Inventors
- 👤 L Ellis
- 👤 L Sheetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:57
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
A safety guard for loading docks, platforms and the like comprising a spring-loaded reel rotatably mounted adjacent to one side of the area to be protected, a cable having a pair of ends connected to said reel, said reel having a central circular hub, both ends of said cable being wound around said hub from opposite directions in overlying relationship to each other, said reel having sides extending radially outwardly from said hub a sufficient distance to hold said cable on said reel when said cable is fully wound on said reel, a cable pull connected to said cable remote from said ends, said cable pull being manually movable away from said reel to unwind both ends of said cable from said reel simultaneously, and means engageable with said cable pull to hold said cable against retraction on said reel, said cable when extended from said reel providing a pair of vertically spaced lengths of cable extending across the area to be protected.
Claim 2
Dependent Claim
163 words
A safety guard for loading docks, platforms and the like comprising a spring-loaded reel rotatably mounted adjacent to one side of the area to be protected, a cable having a pair of ends connected to said reel, said reel having a central circular hub, both ends of said cable being wound around said hub from opposite directions in overlying relationship to each other, said reel having sides extending radially outwardly from said hub a sufficient distance to hold said cable on said reel when said cable is fully wound on said reel, a cable pull connected to said cable remote from said ends, said cable pull being manually movable away from said reel to unwind both ends of said cable from said reel simultaneously, and means engageable with said cable pull to hold said cable against retraction on said reel, said cable when extended from said reel providing a pair of vertically spaced lengths of cable extending across the area to be protected.
Claim 3
Dependent Claim
58 words
The structure described in claim 1, said reel being mounted on a vertically directed main post, said reel being mounted for rotation about a horizontal axis, a terminal post spaced from said main post along the area to be protected, said cable pull being engageable with means on said terminal post to prevent the retraction of said cable.
Claim 4
Dependent Claim
91 words
The structure described in claim 2, said reel being rotatably mounted within a reel enclosure, said reel enclosure being mounted on said main post, and guide means disposed within said reel enclosure for guiding the ends of said cable to and from said reel and for vertically separating said cable lengths from each other when said cable is extended, said guide means comprising a pair of arcuate right angular guide tubes disposed adjacent to the top and bottom of said reel enclosure, said cable endS slidably extending through said guide tubes.
Claim 5
Dependent Claim
51 words
The structure described in claim 3, and an intermediate post removably mounted between said main and terminal posts, said intermediate post having means for slidably receiving both lengths of said cable, and socket means disposed adjacent one of said first named posts for storing said intermediate post when not in use.
Claim 6
Dependent Claim
54 words
The structure described in claim 3, said cable pull comprising an elongated U-shaped tubular member approximately equal in length to the distance between said cable lengths when said cable is extended, said cable comprising a single length of cable slidably extending through said cable pull and having its opposite ends connected to said reel.
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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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |