Abstract: The subject invention includes a lift system including a first scissor-type lift assembly and a second scissor-type lift assembly spaced from the first scissor-type lift assembly. The first scissor-type lift assembly includes a first base and a first platform coupled to the first base for movement between elevated and lowered states. The first scissor-type lift assembly includes a first motor operatively mounted to the first base. The second scissor-type lift assembly includes a second base and a second platform coupled to the second base for movement between elevated and lowered states. The second scissor-type lift assembly includes a second motor operatively mounted to the second base. The first and second motors move the first and second platforms between the elevated and lowered states. The lift system includes a controller in communication with the first and second scissor-type lift assemblies to synchronize operation of the first and second motors.

Abstract: The subject invention includes a lift system including a first scissor-type lift assembly and a second scissor-type lift assembly spaced from the first scissor-type lift assembly. The first scissor-type lift assembly includes a first base and a first platform coupled to the first base for movement between elevated and lowered states. The first scissor-type lift assembly includes a first motor operatively mounted to the first base. The second scissor-type lift assembly includes a second base and a second platform coupled to the second base for movement between elevated and lowered states. The second scissor-type lift assembly includes a second motor operatively mounted to the second base. The first and second motors move the first and second platforms between the elevated and lowered states. The lift system includes a controller in communication with the first and second scissor-type lift assemblies to synchronize operation of the first and second motors.

Abstract: A housing surrounds a portion of a tubular member forming a combustion chamber in the annulus between the housing and the tubular member. The housing has an upper end and a lower end with a port for the passage of hot gases. The tubular member has a port at a lower end portion. The tubular member and housing are located in a borehole and oxygen and hydrogen are injected into the chamber to form a combustible mixture which is ignited and burned to form combustion gases for flow through the port of the housing into the borehole. Steam is injected through the tubular member for cooling the housing and the combustion gases. After a period of time, the injection of the oxygen, hydrogen and steam is terminated and a pump is lowered into the tubular member for pumping fluids in the borehole upward through the tubular member to the surface. Instead of steam, an excess of hydrogen may be injected into the combustion chamber for cooling purposes.