US Patent No: 7,293,762
Number of patents in Portfolio can not be more than 2000
Modular lift assembly
Stats
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Nov 13, 2007
Issued date -
Aug 10, 2006
filing date -
11/463,823
serial no -
In Force
status
Importance
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Abstract
A lift assembly having a drum rotatably mounted to a frame and linearly translatable with respect to the frame. A plurality of head blocks are connected to the frame along a helical mounting path, wherein linear translation of the drum during takeoff or take-up maintains a predetermined fleet angle between a take off point from the drum and the head block. A loft block is disposed within the frame for defining a vertical cable path from within a footprint of the frame.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,988,716 Modular lift assembly | 14 | 2002 | |
| 6,889,958 Brake for hoist assembly | 24 | 2003 | |
| 6,997,442 Safety sensor for a lift assembly | 12 | 2004 | |
| 2005/0247,919 Intermediate brake for modular lift assembly | 9 | 2005 | |
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| 2004/0098,944 Batten for lift assembly | 9 | 2003 | |
| 2004/0099,852 Modular lift assembly | 9 | 2003 | |
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| 6,634,622 Modular lift assembly | 15 | 2000 | |
| 6,691,986 Modular lift assembly | 14 | 2002 | |
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| 4,772,923 Automatically operated vacuum feed and hold down assembly for camera system | 6 | 1987 | |
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| 4,251,059 Apparatus for determining the reeving of a pulley system | 16 | 1979 | |
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| 6,080,981 Apparatus for controlling the operation of a door movable in a door opening to prevent contact between the door and an obstruction in the door opening | 22 | 1998 | |
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| 4,802,787 Electrical control system | 10 | 1987 | |
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| 5,141,085 Hoist load brake | 21 | 1990 | |
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| 6,364,062 Linear tracking mechanism for elevator rope | 13 | 1999 | |
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| 4,606,527 Theatre scenery hoisting mechanism | 18 | 1984 | |
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| 4,324,386 Battens system for raising and lowering sceneries or similar loads on a stage | 22 | 1980 | |
| 4,446,587 Patient positioning device | 22 | 1981 | |
| 4,662,628 Device for maneuvering scenery | 23 | 1985 | |
| 5,031,574 Control system for poultry house ventilation curtains | 22 | 1990 | |
| 5,361,565 Elevating system | 33 | 1993 | |
| 5,711,713 Modified theatrical counterweight apparatus | 13 | 1996 | |
| 6,520,485 Winch system for raising and lowering theatre scenery | 22 | 2000 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 13, 2015 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 13, 2019 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |