US4939882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated pyramid-shaped structural members for three-dimensional frameworks
Assignee: MERO SYSTEME & CO KG GmbH
•
Filing: 1988-08-10
•
Granted: 1990-07-10
•
Expires: 2008-08-10
Abstract
Abstract In prefabricated pyramid-shaped structural members for the production of two-part grill frameworks, the diagonally running rods of each pyramid-shaped structural member are welded with their ends on a cover plate, which has a borehole for the passage of a fastening screw for a head member. Each head member includes a contact surface for the cover plate and is provided with a tapped borehole to receive the fastening screw, which connects the relevant joint member in each case with the cover plate. This screw connection is advantageously not undertaken until at the point of assembly of the grill framework.
Inventors
- 👤 Octavian Filip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:42
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B1/1903; E04B2001/1918; E04B2001/1924; E04B2001/1927; E04B2001/1936; E04B2001/1978
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
Prefabricated pyramid-shaped structural member for a three-dimensional framework, comprising rods which are connected with one another, wherein the rods extend diagonally toward the vertex of each structural member and are connected to a joint member, and the joint member includes a plurality of tapped boreholes for the screw connection of rods of the three-dimensional framework, characterized in that the diagonally running rods (16) are welded with their ends at the vertex of the pyramid-shaped structural member (11) to a cover plate (17), which is screwed onto the joint member (19) provided with a contact surface (20) for the cover plate (17), the cover plate (17) has a central projection (18) with a quadrangular base, and the ends of the diagonally running rods (16) are welded to the side surfaces of said projection (18) and to the cover plate (17).
Claim 2
Dependent Claim
139 words
Prefabricated pyramid-shaped structural member for a three-dimensional framework, comprising rods which are connected with one another, wherein the rods extend diagonally toward the vertex of each structural member and are connected to a joint member, and the joint member includes a plurality of tapped boreholes for the screw connection of rods of the three-dimensional framework, characterized in that the diagonally running rods (16) are welded with their ends at the vertex of the pyramid-shaped structural member (11) to a cover plate (17), which is screwed onto the joint member (19) provided with a contact surface (20) for the cover plate (17), the cover plate (17) has a central projection (18) with a quadrangular base, and the ends of the diagonally running rods (16) are welded to the side surfaces of said projection (18) and to the cover plate (17).
Claim 3
Dependent Claim
32 words
Structural member as in claim 1, characterized in that the cover plate (17) is circular with at least one borehole (22) all the way through for the passage of a fastening screw.
Claim 4
Dependent Claim
27 words
Structural member as in claim 2, characterized in that said borehole (22) for the fastening screw extends through the central projection (18) on the cover plate (17).
Claim 5
Dependent Claim
55 words
Structural member as in claim 2, characterized in that the joint member (19) is in the form of a hemisphere, of which the flat side forms the contact surface (20) for the cover plate (17), on which is provided at least one tapped borehole (21) to receive the fastening screw for the cover plate (17).
References Cited (Backward Citations)
FR1280634A
Cited
FR1547926A
Cited
FR1581815A
Cited
GB1244064A
Cited
SU528374A1
Cited
DE2457674A1
Cited
US4070847A
Cited
DE2727495A1
Cited
DE2917422A1
Cited
DE3123482A1
Cited
DE3133946A1
Cited
US4562682A
Cited
US4679372A
Cited
US4763459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |