US3787033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint for tubular structure
Assignee: CRANE VEYOR CORP
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Filing: 1972-08-14
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Granted: 1974-01-22
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Expires: 1992-08-14
Abstract
Abstract A tubular structure has end posts, intermediate posts and rails which extend between the end posts and intermediate posts. For fastening the rails to a post use is made of a T joint at the top of the post and a cross joint at an intermediate location. For the cross leg of the T joint a hole is made on one side of the cross leg of the same diameter as the post, a square end of the post is pushed in the hole and a weld is applied on the interior of the cross leg to anchor the parts together. A sleeve is inserted into the end of the cross leg with part protruding and this also anchored by a weld applied to the interior. Each end of the rail is then merely slid over the protruding part of the sleeve at each opposite post and no welding appears on the exterior which may need to be ground off.
Inventors
- 👤 D Snyder
- 👤 R Batcheller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:24
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04F11/1817; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/343
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A tubular structure comprising tubular post memebers and tubular rails of the same outside diameter, a tubular leg member for each post member of the same diameter as said post member, one of said members having a recess therein of shape complementary to the shape of the exterior of an adjaCent joining portion of the other of said members, a cylindrical retainer of exterior diameter substantially the same as the interior diameter of said members, one end of the retainer and the member having the recess being anchored to the other member by the same interior weldment, the other end of said retainer having a portion thereof protruding for reception of an end of one of said rails, both said members having in assembled condition a clear and uninterrupted exterior surface exclusive of said recess.
Claim 2
Dependent Claim
135 words
A tubular structure comprising tubular post memebers and tubular rails of the same outside diameter, a tubular leg member for each post member of the same diameter as said post member, one of said members having a recess therein of shape complementary to the shape of the exterior of an adjaCent joining portion of the other of said members, a cylindrical retainer of exterior diameter substantially the same as the interior diameter of said members, one end of the retainer and the member having the recess being anchored to the other member by the same interior weldment, the other end of said retainer having a portion thereof protruding for reception of an end of one of said rails, both said members having in assembled condition a clear and uninterrupted exterior surface exclusive of said recess.
Claim 3
Dependent Claim
164 words
A tubular structure comprising tubular posts and tubular rails of the same outside diameter with all anchoring welds applied to the interior comprising a tubular leg for the top of each post having the same outside diameter as the post, means forming a hole in one side of the leg of diameter equal to the outside diameter of the post and extending inwardly to a distance substantially equal to one half the diameter, a cylindrical retainer having an outside diameter substantially equal to the inside diameter of the leg, one end portion of the retainer extending into the leg to about a position of abutment with the post and the other end portion being exposed beyond the adjacent end of the leg, and a weldment at the interior only of said leg anchoring said leg and said retainer jointly to the post whereby to present an exterior free of weldment for reception a rail end applied over the exposed other end of said retainer.
Claim 4
Dependent Claim
164 words
A tubular structure comprising tubular posts and tubular rails of the same outside diameter with all anchoring welds applied to the interior comprising a tubular leg for the top of each post having the same outside diameter as the post, means forming a hole in one side of the leg of diameter equal to the outside diameter of the post and extending inwardly to a distance substantially equal to one half the diameter, a cylindrical retainer having an outside diameter substantially equal to the inside diameter of the leg, one end portion of the retainer extending into the leg to about a position of abutment with the post and the other end portion being exposed beyond the adjacent end of the leg, and a weldment at the interior only of said leg anchoring said leg and said retainer jointly to the post whereby to present an exterior free of weldment for reception a rail end applied over the exposed other end of said retainer.
Claim 5
Dependent Claim
37 words
A tubular structure as in claim 2 wherein for an intermediate post there is a cylindrical retainer at each end of the leg and an interior weldment jointly securing each retainer and the leg to the post.
Claim 6
Dependent Claim
106 words
A tubular structure as in claim 2 wherein there is a tubular midposition leg of outside diameter equal to the outside diameter of the post and at a location intermediate opposite ends of the post, one end of said midposition leg having a notch therein of shape complementary to the exterior of the leg for a distance of one half the outside circumference, a cylcylindrical retainer of outside diameter substantially equal to the inside diameter of the midposition leg, said cylindrical retainer and said midposition leg being jointly anchored to the post by a single interior weldment, for reception of the end of a midposition rail.
Claim 7
Dependent Claim
47 words
A tubular structure as in claim 4 wherein there is a midposition leg on each diametrical side of the post and a cylindrical retainer in each midposition leg, both said midposition legs and respective retainers being each jointly anchored to the post by a single interior weldment.
Claim 8
Dependent Claim
18 words
A tubular structure as in claim 1 wherein said rails comprise hollow tubular elements with square cut ends.
Claim 9
Dependent Claim
29 words
A tubular structure as in claim 5 wherein all said rails comprise each a hollow tubular element with square cut ends, and of uniform continuous inside and outside diameter.
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |