with actuation of the return stroke by gravity

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Patents Grantslast 30 patents

Information Patent Grant
Bladeless wind turbine
- Patent number 10,690,114
- Issue date Jun 23, 2020
- King Saud University
- Zeyad Abdulwahid Ghaleb Haidar
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Hydraulically driven reciprocating motor
- Patent number 4,458,579
- Issue date Jul 10, 1984
- James W. Rasmussen
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Drive system for deep well pump
- Patent number 4,176,520
- Issue date Dec 4, 1979
- James B. Horton
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Reciprocating motors
- Patent number 4,138,845
- Issue date Feb 13, 1979
- Seiichi Kitabayashi
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Grant
Drop hammers
- Patent number 4,100,977
- Issue date Jul 18, 1978
- BSP International Foundations Limited
- Roger Michael Elliott
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
1597162
- Patent number 1,597,162
- Issue date Aug 24, 1926
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES