US3787131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe anchor
Assignee: Individual
•
Filing: 1972-04-05
•
Granted: 1974-01-22
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Expires: 1992-04-05
Abstract
Abstract A device for connecting a pair of mutually transversely extending tubular structural members. A tubular member having a body and a head is split lengthwise into complementary half sections resiliently connected together. The body fits within one structural member and the head is connected to the second structural member. A bolt passes through the second structural member and threadedly engages a plug in the body of the tubular member. Tightening of the bolt moves the plug axially in the body and causes the body to expand and grip the inner walls of the second structural member.
Inventors
- 👤 F Reachek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:10
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/02; E04G7/06; E04G7/22; F; F16; F16B; F16B7/00; F16B7/02; F16B7/025; Y; Y10; Y10T; Y10T403/00; Y10T403/53; Y10T403/535
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
A device for connecting a pair of mutually transversely extending tubular structural members, said device comprising a tubular member having a head and a body extending from the head, said body being adapted to fit within an end of the first structural member, said head being adapted for supporting said body within said first structural member and for engaging a second structural member, said tubular member being split lengthwise to define first and second complementary half sections, spring means resiliently joining said half sections, a plug in said bOdy movable axially with respect thereto, means for moving said plug to expand said body, and means on said plug adapted to contact said spring means to retain said plug in said body.
Claim 2
Independent Claim
121 words
A device for connecting a pair of mutually transversely extending tubular structural members, said device comprising a tubular member having a head and a body extending from the head, said body being adapted to fit within an end of the first structural member, said head being adapted for supporting said body within said first structural member and for engaging a second structural member, said tubular member being split lengthwise to define first and second complementary half sections, spring means resiliently joining said half sections, a plug in said bOdy movable axially with respect thereto, means for moving said plug to expand said body, and means on said plug adapted to contact said spring means to retain said plug in said body.
Claim 3
Dependent Claim
30 words
A device as claimed in claim 1 wherein the inner walls of said body are tapered toward said head and said plug is tapered to conform with said inner walls.
Claim 4
Dependent Claim
45 words
A device as claimed in claim 1 wherein said plug is provided with a threaded hole and said means for moving said plug axially with respect to said body includes a threaded member extending axially into said tubular member into threaded engagement with said plug.
Claim 5
Dependent Claim
31 words
A device as claimed in claim 1 including flanges carried by said plug and adapted to fit slidingly between said half sections to prevent rotation of said plug in said body.
Claim 6
Dependent Claim
34 words
A device as claimed in claim 4 wherein said plug retaining means includes projections extending radially outwardly from said flanges and adapted to contact said spring means to retain said plug in said body.
Claim 7
Dependent Claim
33 words
A device as claimed in claim 1 wherein the head of said tubular member seats upon the periphery of said first structural member to support said tubular member in said first structural member.
Claim 8
Dependent Claim
30 words
A device as claimed in claim 1 wherein the head of said tubular member has a concave surface conforming to the curvature of said second structural member for engagement therewith.
Claim 9
Dependent Claim
19 words
A device as claimed in claim 1 in combination with a pair of mutually transversely extending tubular structural members.
Claim 10
Independent Claim
176 words
A device for connecting a pair of mutually transversely extending tubular structural members, said device comprising a tubular member having a head and an expansible body extending from the head, said body being adapted to fit within an end of a first structural member, said head being adapted for supporting said body within said first structural member and for engaging a second structural member, said tubular member being split lengthwise to define first and second complementary half sections, a spring steel ring resiliently joining said half sections, a plug in said body movable axially with respect thereto, flanges carried by said plug and adapted to fit slidingly between said half sections to prevent rotation of said plug in said body, projections extending radially outwardly from said flanges and adapted to contact said spring steel ring to retain said plug in said body, said plug having a threaded hole, and means for moving said plug axially to expand said body including a threaded member extending axially into said tubular member and into threaded engagement with said plug.
Claim 11
Independent Claim
176 words
A device for connecting a pair of mutually transversely extending tubular structural members, said device comprising a tubular member having a head and an expansible body extending from the head, said body being adapted to fit within an end of a first structural member, said head being adapted for supporting said body within said first structural member and for engaging a second structural member, said tubular member being split lengthwise to define first and second complementary half sections, a spring steel ring resiliently joining said half sections, a plug in said body movable axially with respect thereto, flanges carried by said plug and adapted to fit slidingly between said half sections to prevent rotation of said plug in said body, projections extending radially outwardly from said flanges and adapted to contact said spring steel ring to retain said plug in said body, said plug having a threaded hole, and means for moving said plug axially to expand said body including a threaded member extending axially into said tubular member and into threaded engagement with said plug.
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) | 1977-01-21 | 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 |