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Class Information
Number: 405/289
Name: Hydraulic and earth engineering > Earth treatment or control > Shoring, bracing, or cave-in prevention > Roof support > Inflatable
Description: Method or apparatus wherein the roof support includes a pliant receptacle which is filled with a fluid under pressure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7232103 |
Load-bearing pressurized liquid column |
Jun. 19, 2007 |
| 7004686 |
Rock bolts with expandable element |
Feb. 28, 2006 |
| 6637159 |
Load-bearing pressurized liquid column |
Oct. 28, 2003 |
| 6558085 |
Mine support and method of forming the same |
May. 6, 2003 |
| 6547492 |
Inflatable mine support |
Apr. 15, 2003 |
| 6394707 |
Yieldable mine roof support |
May. 28, 2002 |
| 5669739 |
Prestressing of mine props |
Sep. 23, 1997 |
| 5615979 |
Mine support bag |
Apr. 1, 1997 |
| 5454866 |
Grout composition |
Oct. 3, 1995 |
| 5435670 |
Spacer assembly and method |
Jul. 25, 1995 |
| 5427476 |
Mine prop headboard |
Jun. 27, 1995 |
| 5308196 |
Yieldable confined core mine roof support |
May. 3, 1994 |
| 5288178 |
Preload headboard for an elongate prop |
Feb. 22, 1994 |
| 5149228 |
Prop preloading apparatus |
Sep. 22, 1992 |
| 5143340 |
Load support |
Sep. 1, 1992 |
| 4906133 |
Mining apparatus for utilization in recovering coal |
Mar. 6, 1990 |
| 4773792 |
System for stabilizing structural elements |
Sep. 27, 1988 |
| 4490076 |
Underground support devices |
Dec. 25, 1984 |
| 4465405 |
Method and device for the backfilling of roadway supports in mine and tunnel construction with the aid of support hoses having a hardening filler |
Aug. 14, 1984 |
| RE30929 |
Collapsible tunnel liner section and method of lining a tunnel |
May. 11, 1982 |
| 4195111 |
Load supporting means and the formation thereof |
Mar. 25, 1980 |
| 4167361 |
Temporary mine roof prop |
Sep. 11, 1979 |
| 4124985 |
Collapsible tunnel liner section and method of lining a tunnel |
Nov. 14, 1978 |
| 4120164 |
Underground roadway or tunnel support |
Oct. 17, 1978 |
| 4102138 |
Method for closing off a mine gallery especially for use to prevent spreading of underground explosions |
Jul. 25, 1978 |
| 4072018 |
Tunnel support structure and method |
Feb. 7, 1978 |
| 4072015 |
Borehole aerostatic ground support system |
Feb. 7, 1978 |
| 4036024 |
Device for closing off a mine gallery especially for use to prevent spreading of underground explosions |
Jul. 19, 1977 |
| 4023372 |
Means to seal-off portions of underground mines and the like |
May. 17, 1977 |
| 3978675 |
Mine roof support equipment |
Sep. 7, 1976 |
| 3948057 |
Portable mine stopping device |
Apr. 6, 1976 |
| 3937025 |
Inflatable envelope systems for use in excavations |
Feb. 10, 1976 |
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