US3980408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction element
Assignee: Individual
•
Filing: 1975-04-29
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Granted: 1976-09-14
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Expires: 1995-04-29
Abstract
Abstract Construction element having a threaded portion for connection to a post and a spool-shaped portion for connection to a tube.
Inventors
- 👤 Rolf D. Jachmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:34
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B1/1903; E04B1/1906; F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/0446; E04B2001/1921; E04B2001/1924; E04B2001/1927; E04B2001/1957; E04B2001/196; E04B2001/1963; E04B2001/1966; F16B7/0453; F16B7/0466; Y; Y10; Y10S; Y10S16/00; Y10S16/40; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/70; Y10T403/7041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
Construction element for releasing connecting rod-shaped structural elements, comprising a junction ball and a pin element extending radially from the ball surface and insertable and fixable in the end-face recess of a rod-shaped structural element, characterized by the fact that the pin element comprises a cylindrical bolt (2) which has, like a dumb-bell, an annular circumferential groove (3) with a trapeziform cross-section, with the end 7a of a radical fastening screw (7), extending from the outside and accommodated in the wall of the recess of the cylindrical rod-like structural element (4), engageable with the inclined wall most distant from the junction ball (1), the pin elements having on at least one end face a screw-threaded projection (2a) engageable with a threaded hole (a) in the junction ball (1), the pin element having at one end face a multi-sided recess for a socket wrench, and at least one of the cylindrical sections (2e, 2f) of the cylindrical bolts (2) on either side of the annular circumferential groove (3) having flats for receiving a wrench.
Claim 2
Dependent Claim
173 words
Construction element for releasing connecting rod-shaped structural elements, comprising a junction ball and a pin element extending radially from the ball surface and insertable and fixable in the end-face recess of a rod-shaped structural element, characterized by the fact that the pin element comprises a cylindrical bolt (2) which has, like a dumb-bell, an annular circumferential groove (3) with a trapeziform cross-section, with the end 7a of a radical fastening screw (7), extending from the outside and accommodated in the wall of the recess of the cylindrical rod-like structural element (4), engageable with the inclined wall most distant from the junction ball (1), the pin elements having on at least one end face a screw-threaded projection (2a) engageable with a threaded hole (a) in the junction ball (1), the pin element having at one end face a multi-sided recess for a socket wrench, and at least one of the cylindrical sections (2e, 2f) of the cylindrical bolts (2) on either side of the annular circumferential groove (3) having flats for receiving a wrench.
Claim 3
Dependent Claim
25 words
Construction element as recited in claim 1, characterized by the fact that the end-face recess of the rod-shaped structural element (4) has an annular insert.
Claim 4
Dependent Claim
29 words
Construction element as recited in claim 2, characterized by the fact that the annular insert is constructed as an inserted annular casing (5) in the rod-shaped structural element (4).
Claim 5
Dependent Claim
24 words
Construction element as recited in claim 3, characterized by the fact that the annular casing (5) is cemented into the rod-shaped structural element (4).
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |