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US 5,011,111 AGranted
Damping control device
OwnerMarvin I. Nelson, John S. Reedyinventors
Life of this patent
Estimating the term…
Abstract
A damping control device which can be used to control the rate of movement or prevent the movement of a handle or other control means, such as a handle which is used to operate valves. This invention relates to control devices such as handles generally, and is more specifically directed to a damping means which can be used in conjunction with control devices, particularly those used to operate valves, to control the rate of actuation of said control device.
Claims4
A damping control device, comprising:
- a. a first cylinder;
- b. a first piston located within said first cylinder which traverses said first cylinder;
- c. a second cylinder which communicates with said first cylinder;
- d. a free floating piston located within said second cylinder which moves transversely along the entire length of said second cylinder to expel a constant volume of fluid by one side of said free floating piston into the first cylinder on one side of said first piston, and to expel a constant volume of fluid by an opposite side of said first piston into said second cylinder on an opposite side of said free floating piston, causing a movement thereby of said free floating piston in response to a movement of said first piston, wherein said free floating piston sealingly engages the cylinder walls of said second cylinder so that said free floating piston acts to keep a constant volume of fluid on each side of said free floating piston and corresponding side of said first piston;
- e. a control means which causes said first piston to traverse said first cylinder, and to transport fluid from said first cylinder into said second cylinder.
2 more elements
A damping control device, comprising:
- a. a first cylinder;
- b. A first piston located within said first cylinder which traverses said first cylinder;
- c. a second cylinder which communicates with said first cylinder;
- d. a free floating piston located within said second cylinder which moves transversely along the entire length of said second cylinder to expel a constant volume of fluid by one side of said free floating piston into the first cylinder on one side of said first piston, and to expel a constant volume of fluid by an opposite side of said first piston into said second cylinder on an opposite side of said free floating piston, causing a movement thereby of said free floating piston in response to a movement of said first piston, wherein said free floating piston sealingly engages the cylinder walls of said second cylinder so that said free floating piston acts to keep a constant volume of fluid on each side of said free floating piston and corresponding side of said first piston;
- e. a connecting channel which connects one end of said first cylinder with a corresponding end of said second cylinder, and which transports fluid to and from said first cylinder and said second cylinder as said first piston traverses said first cylinder;
- f. an additional connecting channel which connects an opposite end of said first cylinder with an opposite end of said second cylinder, and which transports fluid to and from said first cylinder and said second cylinder as said first piston traverses said first cylinder;
- and
- g. a control means which causes said first piston to traverse said first cylinder, and to transport said fluid into and out of said first cylinder and into and out of said second cylinder.
5 more elements
Dependencies are inferred from the claim text.