1. A rotary fluid machinery comprising:
a fixed member;
a drive shaft driven and rotated about a predetermined rotation axis;
a movable member rotatably mounted at the drive shaft with a center of the movable member being eccentrically disposed relative to the rotation axis, with the movable member and the fixed member being arranged and configured to form a fluid chamber therebetween that changes volume in response to revolving movement of the movable member;
a movable member support part having a part engaging with the movable member to limit rotation of the movable member during revolving movement of the movable member; and
a reverse moment generating mechanism including a revolution body rotatably mounted at the drive shaft with a center being eccentrically disposed relative to the rotation axis and configured to generate a moment in a reverse direction about the rotation axis relative to a moment about the rotation axis caused by the rotation of the movable member during revolving movement of the revolution body.
2. The rotary fluid machinery of claim 1,
wherein the movable member support part swingably supports the movable member and movably supports the movable member in a back and forth direction along a plane along which the movable member moves during revolving movement of the movable member,
the reverse moment generating mechanism includes a revolution body support part swingably supporting the revolution body and movably supporting the revolution body in a back and forth direction along a plane along which the revolution body moves during revolving movement of the revolution body,
the center of the revolution body is eccentrically disposed on a same side of the rotation axis relative to the center of the movable member, and
the revolution body support part is arranged at an angular position shifted by 180 degrees about the rotation axis relative to the movable member support part.
3. The rotary fluid machinery of claim 2, wherein
the revolution body support part includes a pin coupled to the revolution body, and a guide part fixed to the fixed member, with the guide part being slidably and rotatably supporting the pin.
4. The rotary fluid machinery of claim 2, wherein
the revolution body support part includes a pin fixed to the fixed member, and a guide part coupled to the revolution body, with the guide part being rotatable and slidable relative to the pin.
5. The rotary fluid machinery of claim 2, wherein
the revolution body is constructed of a material having a specific gravity larger than a specific gravity of the movable member.
6. The rotary fluid machinery of claim 2, wherein
the fixed member is a cylinder,
the fluid chamber is a cylinder chamber figured in the cylinder,
the movable member is a piston accommodated in the cylinder chamber with its center being eccentrically disposed with respect to the cylinder, and
the movable member support part includes a blade coupled to the piston to divide the cylinder chamber into a high pressure chamber and a low pressure chamber, and a swing bush swingably supported by the cylinder and movably supporting the blade in a back and forth direction.
7. The rotary fluid machinery of claim 2, further comprising:
a cylinder including an annular cylinder chamber; and
an annular piston accommodated in the cylinder chamber with its center being eccentrically disposed with respect to the cylinder to divide the cylinder chamber into an outside cylinder chamber and an inside cylinder chamber, wherein
one of the cylinder and the annular piston is the fixed member, and the other of the annular piston and the fixed member is the movable member,
the fluid chamber is firmed by the outside and inside cylinder chambers, and
the movable member support part includes a blade coupled to the cylinder to divide each of the outside and inside cylinder chambers into a high pressure chamber and a low pressure chamber, and a swing bush swingably supported by the annular piston and movably supporting the blade in a back and forth direction.
8. The rotary fluid machinery of claim 2, wherein
the fixed member is a fixed scroll, and
the movable member is an orbiting scroll engaging with the fixed scroll to form the fluid chamber.
9. A rotary fluid machinery comprising:
a fixed member;
a drive shaft driven and rotated about a predetermined rotation axis;
a movable member rotatably mounted at the drive shaft with a center of the movable member being eccentrically disposed relative to the rotation axis, with the movable member and the fixed member being arranged and configured to form a fluid chamber therebetween that changes volume in response to revolving movement of the movable member;
a movable member support part having a part engaging with the movable member to limit rotation of the movable member during revolving movement of the movable member; and
a reverse moment generating mechanism configured to generate a moment in a reverse direction about the rotation axis relative to a moment about the rotation axis caused by the rotation of the movable member,
the movable member support part swingably supporting the movable member and movably supports the movable member in a back and forth direction along a plane along which the movable member moves during revolving movement of the movable member,
the reverse moment generating mechanism including a revolution body rotatably mounted at the drive shaft with a center eccentrically disposed relative to the rotation axis, and a revolution body support part swingably supporting the revolution body and movably supporting the revolution body in a back and forth direction along a plane along which the revolution body moves during revolving movement of the revolution body,
the center of the revolution body being eccentrically disposed on an opposite side of the rotation axis relative to the center of the movable member, and
the revolution body support part being arranged at a same angular position about the rotation axis as the movable member support part.
10. The rotary fluid machinery of claim 9, wherein
the revolution body support part includes a pin coupled to the revolution body, and a guide part fixed to the fixed member, with the guide part being slidably and rotatably supporting the pin.
11. The rotary fluid machinery of claim 9, wherein
the revolution body support part includes a pin fixed to the fixed member, and a guide part coupled to the revolution body, with the guide part being rotatable and slidable relative to the pin.
12. The rotary fluid machinery of claim 9, wherein
the revolution body is constructed of a material having a specific gravity larger than a specific gravity of the movable member.
13. The rotary fluid machinery of claim 9, wherein
the fixed member is a cylinder,
the fluid chamber is a cylinder chamber formed in the cylinder,
the movable member is a piston accommodated in the cylinder chamber with its center being eccentrically disposed with respect to the cylinder, and
the movable member support part includes a blade coupled to the piston to divide the cylinder chamber into a high pressure chamber and a low pressure chamber, and a swing bush swingably supported by the cylinder and movably supporting the blade in a back and forth direction.
14. The rotary fluid machinery of claim 9, further comprising:
a cylinder including an annular cylinder chamber; and
an annular piston accommodated in the cylinder chamber with its center being eccentrically disposed with respect to the cylinder to divide the cylinder chamber into an outside cylinder chamber and an inside cylinder chamber, wherein
one of the cylinder and the annular piston is the fixed member, and the other of the annular piston and the fixed member is the movable member,
the fluid chamber is formed by the outside and inside cylinder chambers, and
the movable member support part includes a blade coupled to the cylinder to divide each of the outside and inside cylinder chambers into a high pressure chamber and a low pressure chamber, and a swing bush swingably supported by the annular piston and movably supporting the blade in a back and forth direction.
15. The rotary fluid machinery of claim 9, wherein
the fixed member is a fixed scroll, and
the movable member is an orbiting scroll engaging with the fixed scroll to form the fluid chamber.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A portable studio hoist, comprising:
a support bar;
motor means, secured to the support bar for driving a dual cable controller;
dual cable controller coupled to the motor means for holding two cables and controlling the taking in and letting out the cables as driven by the motor means;
two cables coupled to the dual cable controller; and
a batten, coupled to the two cables; and
a connecting element for releasably securing the support bar to a pipe grid or other structural ceiling installations:
whereby the portable studio hoist controls the movement of the batten.
2. The portable studio hoist of claim 1 further including control means for directing the movement of the batten in two opposite directions.
3. The portable studio hoist of claim 2 wherein the control means includes a control hub, a selector control station and a pendant controller.
4. The portable studio hoist of claim 3 wherein each portable studio hoist includes a control cable for coupling to the control hub, and the control hub is adapted to receive a plurality of control cables from a plurality of portable studio hoists.
5. The portable studio hoist of claim 4 wherein the control hub has a connection to a power source and supplies the power to the selector control station and pendant controller.
6. The portable studio hoist of claim 4 where there are more than one control hub each of which is connected to the selector control station.
7. The portable studio hoist of claim 4 wherein there is a selector control cable connecting each control hub to the selector control station and a pendant control cable connecting the selector control station to the pendant controller.
8. The portable studio hoist of claim 7 wherein the selector control cable and pendant control cable carry the AC power from the control hub to the selector control station and pendant controller, respectively.
9. The portable studio hoist of claim 3 wherein the selector control station includes separate switches for enabling the operation of each portable studio hoist connected to the selector control station through the control hub.
10. The portable studio hoist of claim 9 wherein the separate switches enable movement of the batten in two opposite directions.
11. The portable studio hoist of claim 10 wherein the two opposite directions are vertically oriented in the up and down directions.
12. The portable studio hoist of claim 11 wherein the selector control station includes visual indications of the direction of movement for each hoist.
13. The portable studio hoist of claim 3 wherein the pendant controller includes controls for causing the selected hoist or hoists on the selector control station to operate in the selected direction and to stop.
14. The portable studio hoist of claim 3 wherein the pendant controller is further enabled to control the selection and direction of operation of each portable studio hoist connected to it through the control hub and selector control station.
15. The portable studio hoist of claim 1 wherein the portable studio hoist can be releasably secured to the pipe grid or other similar structural element in a variety of orientations.
16. The portable studio hoist of claim 15 where a pair of clamps are used to secure the portable studio hoist to the pipe grid or other similar structural element.
17. A portable studio hoist for controlling the movement of a batten and being releasably secured to a ceiling structure comprising:
a support bar;
motor means, secured to the support bar for driving a cable controller;
a cable controller coupled to the motor means for holding at least one cable and controlling the taking in and letting out the at least one cable as driven by the motor means;
at least one cable coupled to the cable controller; and
an adjustable connecting element for releasably securing the support bar to the ceiling structure;
wherein the portable studio hoist is relocatable anywhere on the ceiling structure.
18. The portable studio hoist of claim 17 wherein the portable studio hoist can be releasably secured to the ceiling structure element in a variety of orientations.
19. The portable studio hoist of claim 17 wherein the studio hoist is paired with a single phase AC power source.
20. The portable studio hoist of claim 17 wherein the control means includes a control hub, a selector control station and a pendant controller.
21. The portable studio hoist of claim 20 wherein each portable studio hoist includes a control cable for coupling to the control huh, and the control hub is adapted to receive a plurality of control cables from a plurality of portable studio hoists.
22. The portable studio hoist of claim 20 wherein the control hub has a connection to a power source and supplies the power to the selector control station and pendant controller.
23. The portable studio hoist of claim 20 where there is more than one control hub, each of the control hubs being connected to the selector control station.