Tactical building door opener

1. A portable, tactical building door opener for opening a door, comprising:

a door opening mechanism comprising:

a body;

a door opening arm pivotally connected to said body at a first end of said arm and having a roller for engaging a surface of said door at a second end of said arm; and

an actuator for rotating said door opening arm with respect to said body, from a ready position in which said roller is not forced against the surface of said door, to a door-opened position in which said roller is forced against the surface of said door and has moved said door to an open position;

said actuator being remotely and manually operable; and

support means for temporarily and removably bracing said door opening mechanism with respect to a frame of said door, wherein said support means comprises a spreader bar positioned within said frame of said door and engaging a hinge jamb of said frame at one end of said bar and engaging a latch jamb of said frame at another end of said bar.

2. The door opener of claim 1 , wherein said spreader bar interference fits within said frame of said door.

3. The door opener of claim 2 , wherein said spreader bar comprises two mating tubes, said tubes having alignable mating holes and a spring-loaded button alignable with said holes.

4. The door opener of claim 2 , wherein said spreader bar comprises a sharp point at said ends thereof for engaging with said door frame.

5. The door opener of claim 2 , further comprising rubber feet which may be removably mounted on the ends of said spreader bar, for engaging with said door frame.

6. The door opener of claim 2 , further comprising two adjustable clamps mounted on said body, for gripping said spreader bar.

7. The door opener of claim 2 , wherein said actuator comprises a pneumatic cylinder.

8. The door opener of claim 7 , wherein said pneumatic cylinder is pressurized by rotating said door opening arm from said door opened position to said ready position.

9. The door opener of claim 8 , further comprising a latch mechanism to hold said pneumatic cylinder when pressurized.

10. The door opener of claim 9 , wherein said latch mechanism is operated to release said pneumatic cylinder by pulling on a line.

11. The door opener of claim 2 , wherein said actuator comprises a spring.

12. A portable, tactical building door opening system for opening a door, comprising:

means for unlatching said door;

a door opening mechanism comprising:

a body;

a door opening arm pivotally connected to said body at a first end of said arm and having a roller for engaging a surface of said door at a second end of said arm; and

an actuator for rotating said door opening arm with respect to said body, from a ready position in which said roller is not forced against the surface of said door, to a door-opened position in which said roller is forced against the surface of said door and has moved said door to an open position;

said actuator being remotely and manually operable;

support means for temporarily and removably bracing said door opening mechanism with respect to a frame of said door; wherein said support means comprises a spreader bar positioned within said frame of said door and engaging a hinge jamb of said frame at one end of said bar and engaging a latch jamb of said frame at another end of said bar; and

means for operating said means for unlatching said door and said actuator manually and remotely.

13. The building door opening system of claim 12 , wherein said means for unlatching said door comprises a lever which is removably fastened to a knob on said door.

14. The building door opening system of claim 13 , wherein said means for operating comprises a single line which is routed to operate said means for unlatching and said actuator when pulled.