Patent US3822850A successfully refreshed from Google Patents.
US3822850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for construction fence
Assignee: Dell Holdings Ltd
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Filing: 1973-01-29
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Granted: 1974-07-09
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Expires: 1993-01-29
Abstract
Abstract This invention relates to a tamper-proof jack post for a construction fence comprising two posts with a portion of their extent in telescoped relation, a sleeve in telescoped relation with the said two posts and in threaded relation with the first one of said two posts, said sleeve and said second post being formed to receive a first removable coupling device for said sleeve and said second telescoped post, said first post and said second post being formed to receive a second removable coupling device for said first post and said second post.
Inventors
- 👤 M Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:36
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/14; E04H17/16; E04H17/18; E04G; E04G21/00; E04G21/32; E04G21/3204; E04G21/3223; E04G21/3233; E04G5/00; E04G5/14; E04G2005/148
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
A jack post for a construction fence comprising two posts with a portion of their extent in telescoped relation, one of said posts being compressible axially of itself, a sleeve in telescoped relation with the said two posts and in threaded relation with the first one of said two posts, said sleeve and said second post being formed with openings that are alignable by relative rotation of said sleeve and said first post to receive a first coupling device for coupling said sleeve and said second telescoped post, said first post and said second post being formed with openings that are alignable by relative rotation of said first post and said second post when said sleeve and second telescoping post are coupled, to receive a second coupling device for coupling said first post and said second post.
Claim 2
Dependent Claim
137 words
A jack post for a construction fence comprising two posts with a portion of their extent in telescoped relation, one of said posts being compressible axially of itself, a sleeve in telescoped relation with the said two posts and in threaded relation with the first one of said two posts, said sleeve and said second post being formed with openings that are alignable by relative rotation of said sleeve and said first post to receive a first coupling device for coupling said sleeve and said second telescoped post, said first post and said second post being formed with openings that are alignable by relative rotation of said first post and said second post when said sleeve and second telescoping post are coupled, to receive a second coupling device for coupling said first post and said second post.
Claim 3
Dependent Claim
55 words
A jack post for a construction fence as claimed in claim 1 including said second coupling device, said second coupling device having a shank that enters said openings in said posts, and including said first coupling device, said first coupling device having a shank that enters said openings in said sleeve and said second post.
Claim 4
Dependent Claim
39 words
A jack post for a construction fence as claimed in claim 2 in which said shank of said second coupling device is formed with a hook to hook over the top edge of a construction fence panel in use.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |