Intrascopic hydraulic cylinder

Abstract

A hydraulic cylinder (1) which acts as a cylinder hollow rod in an outer hydraulic cylinder (10) is disclosed comprising an inner rod (4) with a piston (2) and piston-gland (3) wherein the cylinder hollow rod (1) is held longitudinally displaceably in the cylinder housing (10). The system additionally has a cylinder base (5) and a fibre cover (14) on the outer casing of hydraulic cylinder (10). The system also has ports for fluid (11, 12 and 13) corresponding to four chambers, (67, 8 and 9 respectively). According to the invention, when pressure is applied to chamber (7), the internal rod (4) extends into the chamber (6), displacing its mass and dramatically increases the pressure in Chamber (6). This displacement is effectively an internal pump which can be activated multiple times within a given stroke of rod (1).

What is claimed is: 
     
       1. A hydraulic cylinder assembly comprising:
 an outer cylindrical housing; and 
 an inverted hydraulic cylinder inside the outer cylindrical housing, wherein the inverted hydraulic cylinder is smaller than the outer cylindrical housing and functions as a piston-rod assembly held longitudinally displaceably within the outer cylindrical housing, and wherein the inverted hydraulic cylinder comprises a cylindrical hollow rod containing a piston, a piston-gland and an inner rod, 
 wherein the cylindrical hollow rod has a further hollow rod affixed in the piston-gland, wherein the inner rod of the cylindrical hollow rod extends and retracts by sliding within the further hollow rod. 
 
     
     
       2. The hydraulic cylinder assembly according to  claim 1 , wherein the cylindrical hollow rod has a hydraulic port for the flow of fluid in its body at a top end, wherein the hydraulic port is external to the hydraulic cylinder assembly and wherein the outer cylindrical housing has an additional hydraulic port for flow of fluid near a base of the outer cylindrical housing, wherein the additional hydraulic port is internal to the hydraulic cylinder assembly. 
     
     
       3. The hydraulic cylinder assembly according to  claim 1 , wherein the cylindrical hollow rod has a further hollow rod affixed in the piston-gland, wherein the inner rod of the cylindrical hollow rod extends and retracts by sliding within the further hollow rod, and
 wherein, when pressure is applied to a cap end chamber of the cylindrical hollow rod, the piston of the cylindrical hollow rod forces the inner rod into a cap end chamber of the outer cylindrical housing and subsequently forces the further hollow rod into the cap end chamber of the outer cylindrical housing. 
 
     
     
       4. The hydraulic cylinder assembly according to  claim 1 , wherein the outer cylindrical housing has a cylinder base and a hydraulic port for the flow of fluid near the cylinder base and also has an additional hydraulic port for flow of fluid in its body, wherein both the hydraulic port and the additional hydraulic port are external to the body of the outer cylindrical housing. 
     
     
       5. The hydraulic cylinder assembly according to  claim 1 , wherein the outer cylindrical housing has a cover of fibrous material on a body of the outer cylindrical housing. 
     
     
       6. The hydraulic cylinder assembly according to  claim 5 , wherein the cover of fibrous material comprises carbon fibre or nanotube fibre. 
     
     
       7. The hydraulic cylinder assembly according to  claim 2 , wherein the cylindrical hollow rod has a further hollow rod affixed in the piston-gland, wherein the inner rod of the cylindrical hollow rod extends and retracts by sliding within the further hollow rod, and
 wherein, when pressure is applied to a cap end chamber of the cylindrical hollow rod, the piston of the cylindrical hollow rod forces the inner rod into a cap end chamber of the outer cylindrical housing and subsequently forces the further hollow rod into the cap end chamber of the outer cylindrical housing. 
 
     
     
       8. The hydraulic cylinder assembly according to  claim 7 , wherein the outer cylindrical housing has a cylinder base and a hydraulic port for the flow of fluid near the cylinder base and also has an additional hydraulic port for flow of fluid in its body, wherein both the hydraulic port and the additional hydraulic port are external to the body of the outer cylindrical housing. 
     
     
       9. The hydraulic cylinder assembly according to  claim 8 , wherein the outer cylindrical housing has a cover of fibrous material on its body. 
     
     
       10. The hydraulic cylinder assembly according to  claim 9 , wherein the cover of fibrous material comprises carbon fibre or nanotube fibre. 
     
     
       11. The hydraulic cylinder assembly according to  claim 7 , wherein the outer cylindrical housing has a cover of fibrous material on its body. 
     
     
       12. The hydraulic cylinder assembly according to  claim 11 , wherein the cover of fibrous material comprises carbon fibre or nanotube fibre. 
     
     
       13. The hydraulic cylinder assembly according to  claim 2 , wherein the outer cylindrical housing has a cylinder base and a hydraulic port for the flow of fluid near the cylinder base and also has an additional hydraulic port for flow of fluid in its body, wherein the both the hydraulic port and the additional hydraulic port are external to the body of the outer cylindrical housing. 
     
     
       14. The hydraulic cylinder assembly according to  claim 13 , wherein the outer cylindrical housing has a cover of fibrous material on its body. 
     
     
       15. The hydraulic cylinder assembly according to  claim 2 , wherein the outer cylindrical housing has a cover of fibrous material on its body. 
     
     
       16. The hydraulic cylinder assembly according to  claim 15 , wherein the cover of fibrous material comprises carbon fibre or nanotube fibre. 
     
     
       17. The hydraulic cylinder assembly according to  claim 3 , wherein the outer cylindrical housing has a cover of fibrous material on its body. 
     
     
       18. The hydraulic cylinder assembly according to  claim 17 , wherein the cover of fibrous material comprises carbon fibre or nanotube fibre. 
     
     
       19. The hydraulic cylinder assembly according to  claim 4 , wherein the outer cylindrical housing has a cover of fibrous material on its body. 
     
     
       20. The hydraulic cylinder assembly according to  claim 19 , wherein the cover of fibrous material comprises carbon fibre or nanotube fibre. 
     
     
       21. The hydraulic cylinder assembly of  claim 1 , wherein the piston within the cylindrical hollow rod has a piston surface that faces a cap end chamber of the cylindrical hollow rod and that is greater in area than an end surface of the inner rod that faces a cap end chamber of the outer cylindrical housing.  
     
     
       22. The hydraulic cylinder assembly of  claim 21 , wherein the cylindrical hollow rod has a first hydraulic port for flow of fluid in its body at a top end to control pressure in the cap end chamber of the cylindrical hollow rod, and
 wherein the outer cylindrical housing has a cylinder base and a second hydraulic port for flow of fluid near the cylinder base to control pressure in the cap end chamber of the outer cylindrical housing, and also has a third hydraulic port for flow of fluid in its body to control pressure in another chamber of the outer cylindrical housing.    
     
     
       23. A hydraulic cylinder assembly comprising:
 an outer cylindrical housing; and   an inverted smaller hydraulic cylinder inside the outer cylindrical housing which acts like a piston-rod assembly held longitudinally displaceably within the outer cylindrical housing, wherein the inverted smaller hydraulic cylinder comprises a cylindrical hollow rod containing a piston, a piston-gland and an inner rod, and   wherein the cylindrical hollow rod has a further hollow rod affixed in the piston-gland, wherein the inner rod of the cylindrical hollow rod extends and retracts by sliding within the further hollow rod.    
     
     
       24. The hydraulic cylinder assembly of  claim 23 , wherein, when pressure is applied to a cap end chamber of the cylindrical hollow rod, the piston of the cylindrical hollow rod forces the inner rod into a cap end chamber of the outer cylindrical housing and subsequently forces the further hollow rod into the cap end chamber of the outer cylindrical housing.  
     
     
       25. The hydraulic cylinder assembly according to  claim 23 , wherein the cylindrical hollow rod has a first hydraulic port for flow of fluid in its body at a top end to control pressure in a cap end chamber of the cylindrical hollow rod, and
 wherein the outer cylindrical housing has a cylinder base and a second hydraulic port for flow of fluid near the cylinder base to control pressure in a cap end chamber of the outer cylindrical housing, and also has a third hydraulic port for flow of fluid in its body to control pressure in another chamber of the outer cylindrical housing.