Movable support mechanism for construction of elevator shafts and the like
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 1992
Issued Date -
N/A
app pub date -
Sep 21, 1990
filing date -
Jun 12, 1989
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
The invention also contemplates a retractable corner mechanism for the inside corner of the concrete form. The mechanism comprises an elongated corner member having first and second perpendicular faces joined along a first edge of each face to form a corner and having form attaching means along a second edge. A concrete form has an end attached to each of the second edges. Means are provided for sliding the forms relative to the corner member and means is provided for retracting and extending the forms to cause the corner member to be retracted and extended. The forms can be made of plywood or metal and the use of steel is contemplated for the corner members. The retracting and extending means can include an externally threaded rod pivotally connected adjacent the end of one of the concrete forms and an internally threaded member pivotally connected adjacent the end of the other of the concrete forms and treadably received on the rod. Means is provided for rotating the threaded member on the rod to retract or extend the concrete forms.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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GATES & SONS INC | 90 SOUTH FOX A CORP OF CO DENVER CO 80223 |
International Classification(s)

- 1990 Application Filing Year
- E04G Class
- 125 Applications Filed
- 0 Patents Issued To-Date
- 0 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Gates, H Gordon | Lakewood, CO | 13 | 147 |
# of filed Patents : 13 Total Citations : 147 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 6 Citation Count
- E04G Class
- 0 % this patent is cited more than
- 33 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jan 27, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Feb 21, 1996 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Feb 21, 1996 |
Feb 18, 1996 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Sep 26, 1995 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jun 01, 1993 | CC | CERTIFICATE OF CORRECTION | |
Feb 18, 1992 | I | Issuance | |
Sep 21, 1990 | F | Filing | |
Sep 14, 1990 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GATES, H. GORDON;REEL/FRAME:005451/0587 Owner name: GATES & SONS, INC., COLORADO Effective Date: Sep 14, 1990 |
Jun 12, 1989 | PD | Priority Date |

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