US Patent No: 7,954,828
Number of patents in Portfolio can not be more than 2000
Caster locking system for medical transport cart
Stats
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Jun 7, 2011
Issued date -
Aug 1, 2008
filing date -
12/221,382
serial no -
In Force
status
Importance
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Abstract
A transport cart for attaching to a patient care apparatus having a locking system that converts the forward caster of the transport cart from an omni-directional pivotable caster to a fixed directional device by restraining its pivoting about a vertical axis. The forward caster is located at about the center of the footprint of the combined transport cart/patient care apparatus and the fixed directional movement of the forward caster provides stability in moving the combined apparatus. The locking mechanism may be internal to the caster or may have a pair of pivotable lock arms that contact the patient care apparatus as the two are brought together and the pivotable lock arms pivot to a locked position where they sandwich the caster therebetween to restrain its ability to pivot. The locking mechanism automatically or manually releases the forward caster to again freely pivot when the transport cart/patient care apparatus are separated.
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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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| 4,543,685 Caster | 16 | 1984 | |
| 4,637,093 Spring cushioned caster having a spring biased locking member | 12 | 1984 | |
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| 6,375,585 Adjustable goalpost assembly | 8 | 2000 | |
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| 5,797,611 Cart including a frame mounted on castors and a castor in particular for a cart of this kind | 9 | 1996 | |
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| 6,557,870 Means for limiting direction of a stroller front wheel | 2 | 2001 | |
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| 4,678,197 Arrangement for influencing the keeping of a driving direction by a motor vehicle | 4 | 1986 | |
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| 7,533,742 Bed transfer system | 3 | 2005 | |
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| 7,544,742 Antistatic polyamide composition and articles therewith | 2 | 2006 | |
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| 7,341,121 Vehicle with improved turning | 5 | 2004 | |
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| 2009/0000,034 Self-Locking Swivel Castor Wheels for Roll-In Cot | 1 | 2005 | |
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| 7,621,003 Self-locking swivel castor wheels for roll-in cot | 3 | 2005 | |
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| 5,517,718 Caster assembly with automatic swivel lock/unlock | 10 | 1994 | |
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| 5,983,614 Lockable front wheel swivel for lawn mowers | 14 | 1997 | |
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| 2008/0012,254 CHILD SUPPORT FOR ATTACHMENT TO SHOPPING CART | 2 | 2007 | |
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| 2001/0029,643 Locking swivel caster wheel | 4 | 2001 | |
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| 5,450,650 Pivoting castor with directional locking | 5 | 1994 | |
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| 7,258,181 Omni-directional vehicle with trailer mule hitch assembly for moving semi-trailers | 6 | 2004 | |
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| 4,555,124 Trolley for use with a wheelchair | 12 | 1983 | |
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| 5,497,766 Ventilator and care cart each capable of nesting within and docking with a hospital bed base | 49 | 1994 | |
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| 4,759,098 Direction setting device for rollers of a baby walker | 33 | 1986 | |
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| 4,309,791 Caster brake and swivel lock for stretcher or the like | 26 | 1979 | |
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| 7,490,848 Fixed-direction wheel control mechanism for baby stroller | 2 | 2006 | |
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| 2007/0089,265 Lockable wheel assembly and cart including the same | 2 | 2005 | |
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| 4,336,629 Caster swivel lock | 16 | 1981 | |
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| 2008/0302,585 TRANSPORT SYSTEM | 4 | 2008 | |
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| 5,829,096 Locking caster | 6 | 1996 | |
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| 6,880,202 Directional lock | 13 | 2003 | |
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| 4,349,938 Caster assembly with swivel lock | 24 | 1980 | |
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| 6,584,641 Brake and steering lock for castor | 24 | 2001 | |
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| 2009/0066,150 Cam Action Caster Assembly for Ride-On Devices | 10 | 2008 | |
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| 7,506,890 Device for limiting swivel of a front wheel of a stroller | 4 | 2006 | |
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| 5,014,391 Lockable caster wheel | 35 | 1990 | |
| 5,611,414 Self-contained folding portable bed | 15 | 1995 | |
| 6,305,705 No-sway hitch | 6 | 2000 | |
| 2006/0016,009 Steering system for medical transport cart | 2 | 2004 | |
| 7,451,994 Apparatus and method for stabilizing a motorcycle during turning maneuvers | 5 | 2004 | |
| 7,255,206 Shopping cart brake | 1 | 2005 | |
| 7,210,690 Direction-limiting device for stroller | 8 | 2005 | |
| 2007/0278,758 Avalanche skateboard | 1 | 2006 | |
| 7,861,370 Caster with brake unit and direction unit | 5 | 2008 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 7, 2014 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 7, 2018 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 7, 2022 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| 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 |