US4545490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety steel angle assembly rack
Assignee: EZI STRUCTURAL METAL Corp
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Filing: 1983-06-06
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Granted: 1985-10-08
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Expires: 2003-06-06
Abstract
Abstract An assembly rack having: a plurality of steel angles each having its two sides bent into L-shaped guide edges which define a guide groove, and provided with a series of holes in each side, and a plurality of slightly L-shaped joint members of sheet metal having a guide groove on each side and provided with screw holes one in each side of the guide groove. The guide edges of the steel angles are engaged in the grooves of the joint members and the two extended portions of the joint members are fitted into the guide grooves of the angles. Vertical and horizontal steel angles thus joined by the joint members are fastened to the joint members by bolts, and the horizontal angles can be positioned at different locations along the vertical steel angles.
Inventors
- 👤 Yu-Sheng Hsiao
- 👤 Huey-Der Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:39
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/44; F16B12/50; F16B12/10; F16B12/28; F16B12/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
An assembly rack comprising a plurality of steel angles used as vertical supports and horizontal joining rods interconnected transversely and longitudinally by a plurality of L-shaped joint members and bolts, each of the steel angles having two L-shaped perpendicular sides, each side being bent inward along its longitudinal plane to form small L-shaped guide edges defining an inner guide groove and each side having at least one row of spaced holes arranged longitudinally along the surface thereof, each of said joint members having an L-shaped surface and two interconnected sidewalls hanging down from the longer outer edge of the L-shaped top surface, each sidewall having a guide opening extending from the top surface to the lower edge of the sidewall which divides the sidewall into inner and outer parts, and a screw hole in each of the inner and outer parts of the sidewall.
Claim 2
Dependent Claim
144 words
An assembly rack comprising a plurality of steel angles used as vertical supports and horizontal joining rods interconnected transversely and longitudinally by a plurality of L-shaped joint members and bolts, each of the steel angles having two L-shaped perpendicular sides, each side being bent inward along its longitudinal plane to form small L-shaped guide edges defining an inner guide groove and each side having at least one row of spaced holes arranged longitudinally along the surface thereof, each of said joint members having an L-shaped surface and two interconnected sidewalls hanging down from the longer outer edge of the L-shaped top surface, each sidewall having a guide opening extending from the top surface to the lower edge of the sidewall which divides the sidewall into inner and outer parts, and a screw hole in each of the inner and outer parts of the sidewall.
Claim 3
Dependent Claim
17 words
An assembly rack as defined in claim 1, wherein said vertical support is a single steel angle.
Claim 4
Dependent Claim
88 words
An assembly rack as defined in claim 1, wherein said joint member further includes a plurality of notches in said top surface, each notch being a continuation of one of the guide openings, and an L-shaped inner plate attached by spot welding to the inner side of each sidewall of the joint member, said inner plate having on each side a channel-shaped guide groove which coincides with the guide opening, and having screw holes passing therethrough aligned with the screw holes passing through each part of the sidewalls.
Claim 5
Dependent Claim
43 words
An assembly rack as defined in claims 1 or 3, wherein the height of the outer part of each sidewall of the joint member is shorter than that of the inner part and is substantially equal to the width of the top surface.
Claim 6
Dependent Claim
37 words
An assembly rack as defined in claim 3, wherein a notch is formed at the lower end of that sidewall of each channel-shaped guide groove adjacent to the otuer part of each sidewall of the joint member.
Claim 7
Dependent Claim
54 words
An assembly rack as defined in claim 3, wherein a downward bent flange is formed along the shorter inner edge of the L-shaped top surface where no sidewall is formed, the width of the flange being slightly shorter than the width of the guide groove defined by each guide edge of said steel angle.
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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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |