US4003543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Column lift bracket
Assignee: Enviri Corp
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Filing: 1975-07-14
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Granted: 1977-01-18
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Expires: 1995-07-14
Abstract
Abstract A column mold system has at least two mold walls for forming a column mold section where the walls are held together by corner brackets. The corner brackets are right angle iron members with a pair of integral legs bent at their upper ends for forming a lifting end. Each leg of the corner bracket has slots correspondingg to slots in the other leg. The slots match similar slots on the ends of the mold walls for joining the corner bracket to the mold wall using wedge connectors. The lifting end of the corner brackets are used to stack mold sections one on top of the other and to strip the mold sections from a poured concrete column.
Inventors
- 👤 Max Doubleday
- 👤 Douglas M. Demarest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:28
CPC Classifications
E; E04; E04G; E04G13/00; E04G13/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A corner bracket for a concrete column mold comprising: a. an angle iron bar having a pair of legs; b. each of said legs having a plurality of slots which align with similar slots on the other of said legs; c. a lifting connection at the upper most end of said angle iron bar for lifting a completed column and d. said lifting connection including said upper most ends of said angle iron bar being in contact in a flattened area to receive a hoist line coupling.
Claim 2
Dependent Claim
87 words
A corner bracket for a concrete column mold comprising: a. an angle iron bar having a pair of legs; b. each of said legs having a plurality of slots which align with similar slots on the other of said legs; c. a lifting connection at the upper most end of said angle iron bar for lifting a completed column and d. said lifting connection including said upper most ends of said angle iron bar being in contact in a flattened area to receive a hoist line coupling.
Claim 3
Dependent Claim
87 words
A column mold comprising: a. a plurality of mold sections forming a column mold square in cross-section; b. corner brackets for connecting adjacent ones of said mold sections together; c. each of said corner brackets having a pair of integral legs joined at right angle to one another; d. said legs being bent into contact in a flattened area at their upper most ends forming a lifting means for lifting said completed column mold; and e. connecting means for joining said mold sections to said corner brackets.
Claim 4
Dependent Claim
87 words
A column mold comprising: a. a plurality of mold sections forming a column mold square in cross-section; b. corner brackets for connecting adjacent ones of said mold sections together; c. each of said corner brackets having a pair of integral legs joined at right angle to one another; d. said legs being bent into contact in a flattened area at their upper most ends forming a lifting means for lifting said completed column mold; and e. connecting means for joining said mold sections to said corner brackets.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |