US3851936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment device for modular units
Assignee: Individual
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Filing: 1973-08-16
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Granted: 1974-12-03
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Expires: 1993-08-16
Abstract
Abstract An attachment device for modular units, such as rectangular cabinets, which are to be attached to each other along their side surfaces. The side surfaces are formed with wedge shaped raised portions defining the sides of wedge shaped recesses. The raised portions of one unit index with the recesses in another unit and the side walls of the indexing raised portions and recesses are angled in two planes to provide a lock.
Inventors
- 👤 R Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
A; A47; A47B; A47B87/00; A47B87/02; F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A modular unit assembly comprising a plurality of interfitting four-sided units with each side of each unit having alternating flutes and ribs extending continuously along the depth from a front to a back of the units, each rib having undercut side edges along the depth thereof, each rib increasing in width along the depth thereof at a wedge angle, and each flute decreasing in width along the depth thereof in complimentary relationship with the ribs, heights of the ribs and depths of the flutes being equal and the undercut edges of the ribs providing a dovetail interlock holding the ribs against the bottoms of the flutes and forming a continuous contact between outside surfaces of interfitting units and the mating wedge angles of the ribs and flutes locking the interfitting units in axially aligned relation.
Claim 2
Dependent Claim
135 words
A modular unit assembly comprising a plurality of interfitting four-sided units with each side of each unit having alternating flutes and ribs extending continuously along the depth from a front to a back of the units, each rib having undercut side edges along the depth thereof, each rib increasing in width along the depth thereof at a wedge angle, and each flute decreasing in width along the depth thereof in complimentary relationship with the ribs, heights of the ribs and depths of the flutes being equal and the undercut edges of the ribs providing a dovetail interlock holding the ribs against the bottoms of the flutes and forming a continuous contact between outside surfaces of interfitting units and the mating wedge angles of the ribs and flutes locking the interfitting units in axially aligned relation.
Claim 3
Dependent Claim
68 words
The assembly of claim 1 including a mounting strip having a length greater than the side of a unit, the strip having one surface formed with alternating ribs and flutes indexable with ribs and flutes of co-planar surfaces of a plurality of attached together units to provide a common mounting strip for the attached together units, a second surface, opposite the one surface of the strip being planar.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |