US4605362A — Rotary compressor and method of assembly

Claim 1

Independent Claim 172 words

In a rotary compressor of the type having an outer metal cylindrical casing, a cylinder as viewed in top plan view with a circular chamber the center of which is in alignment with the central axis of the cylinder and having a circular outer wall slightly smaller than the inside diameter of the casing, a vane slot in the cylinder open at one end into the chamber, a vane in the vane slot to divide the chamber into a high pressure side and a low pressure side, wherein the improvement comprises: three curved elongated ports spaced from each other in the cylinder between the chamber and outer wall, the length of each port and thickness of the metal between the port and outer wall of the cylinder cooperating to provide adequate strength for welding and sufficiently flexible to absorb any distortion forces caused by welding without transmitting any significant distortion forces to the vane slot, and welds joining the cylinder outer wall to the casing, said welds being adjacent the three ports.

Claim 2

Dependent Claim 172 words

In a rotary compressor of the type having an outer metal cylindrical casing, a cylinder as viewed in top plan view with a circular chamber the center of which is in alignment with the central axis of the cylinder and having a circular outer wall slightly smaller than the inside diameter of the casing, a vane slot in the cylinder open at one end into the chamber, a vane in the vane slot to divide the chamber into a high pressure side and a low pressure side, wherein the improvement comprises: three curved elongated ports spaced from each other in the cylinder between the chamber and outer wall, the length of each port and thickness of the metal between the port and outer wall of the cylinder cooperating to provide adequate strength for welding and sufficiently flexible to absorb any distortion forces caused by welding without transmitting any significant distortion forces to the vane slot, and welds joining the cylinder outer wall to the casing, said welds being adjacent the three ports.

Claim 3

Dependent Claim 54 words

In the rotary compressor as recited in claim 1 wherein a first one of the ports is centered on a diameter line of the cylinder passing through the center of the vane slot and central axis of the cylinder and the second and third ports are located on opposite sides of said diameter line.

Claim 4

Dependent Claim 38 words

In the rotary compressor as recited in claim 2 wherein the transverse center lines of the second and third ports are between 96° and 116° from where said diameter line passes through the first one of the ports.

Claim 5

Dependent Claim 23 words

In the rotary compressor as recited in claim 3 wherein the welds are in alignment with the transverse center line of each port.

Claim 6

Dependent Claim 61 words

In the rotary compressor as recited in claim 1 and further including a weld joining the cylinder outer wall to the casing at a fourth location of from 5° to 15° from a diameter line of the cylinder passing through the center of the vane slot and central axis of the cylinder on the high pressure side of the cylinder chamber.

Claim 7

Dependent Claim 24 words

In the rotary compressor as recited in claim 1 wherein the weld is the result of a metal inert gas submerged arc spot weld.

Claim 8

Dependent Claim 58 words

In the rotary compressor as recited in claim 1 wherein the metal cylinder has a diameter of 4.40 inches, a thickness of 0.65 inches and the three ports each have a length of between 1.61 and 2.26 inches and the thickness of the metal between each port and the outer wall of the cylinder is approximately 0.33 inches.

Claim 9

Independent Claim 187 words

The method of assembling a rotary compressor of the type having an outer metal cylindrical casing, a metal cylinder with a vane slot and a vane which comprises: forming the cylinder as viewed in top plan view with a circular chamber the center of which is in alignment with the central axis of the cylinder and having a circular outer wall slightly smaller than the inside diameter of the casing, cutting a vane slot in the cylinder, said vane slot being open at one end into the chamber, placing a vane in the vane slot to divide the chamber into a high pressure side and a low pressure side, forming three curved elongated ports spaced from each other in the cylinder between the chamber and outer wall, the length of each port and thickness of the metal between the port and outer wall of the cylinder cooperating to provide adequate strength for welding and sufficiently flexible to absorb any distortion forces caused by welding without transmitting any significant distortion forces to the vane slot, and welding the cylinder outer wall to the casing adjacent the three ports.

Claim 10

Independent Claim 187 words

The method of assembling a rotary compressor of the type having an outer metal cylindrical casing, a metal cylinder with a vane slot and a vane which comprises: forming the cylinder as viewed in top plan view with a circular chamber the center of which is in alignment with the central axis of the cylinder and having a circular outer wall slightly smaller than the inside diameter of the casing, cutting a vane slot in the cylinder, said vane slot being open at one end into the chamber, placing a vane in the vane slot to divide the chamber into a high pressure side and a low pressure side, forming three curved elongated ports spaced from each other in the cylinder between the chamber and outer wall, the length of each port and thickness of the metal between the port and outer wall of the cylinder cooperating to provide adequate strength for welding and sufficiently flexible to absorb any distortion forces caused by welding without transmitting any significant distortion forces to the vane slot, and welding the cylinder outer wall to the casing adjacent the three ports.

Claim 11

Dependent Claim 57 words

The method of assembling a rotary compressor in accordance with claim 8 wherein a first one of the ports is centered on a diameter line of the cylinder passing through the center of the vane slot and central axis of the cylinder and the second and third ports are located on opposite sides of said diameter line.

Claim 12

Dependent Claim 41 words

The method of assembling a rotary compressor in accordance with claim 9 wherein the transverse center lines of the second and third ports are between 96° and 116° from where said diameter line passes through the first one of the ports.

Claim 13

Dependent Claim 26 words

The method of assembling a rotary compressor in accordance with claim 10 wherein the welding is in alignment with the transverse center line of each port.

Claim 14

Dependent Claim 62 words

The method of assembling a rotary compressor in accordance with claim 8 and further including welding the cylinder outer wall to the casing at a fourth location of from 5° to 15° from a diameter line of the cylinder passing through the center of the vane slot and central axis of the cylinder on the high pressure side of the cylinder chamber.

Claim 15

Dependent Claim 26 words

The method of assembling a rotary compressor in accordance with claim 8 wherein the welding is accomplished by a metal inert gas submerged arc spot weld.

Claim 16

Dependent Claim 19 words

The method of assembling a rotary compressor in accordance with claim 13 wherein the spot welds are done simultaneously.

Claim 17

Dependent Claim 66 words

The method of assembling a rotary compressor in accordance with claim 8 wherein the metal cylinder is formed to have a diameter of approximately 4.40 inches, a thickness of approximately 0.65 inches and the three ports each have a length of between 1.61 and 2.26 inches and the thickness of the metal between each port and the outer wall of the cylinder is approximately 0.33 inches.

Claim 18

Independent Claim 264 words

The method of assembling a rotary compressor of the type having an outer metal cylindrical casing, a metal cylinder with a vane slot and a vane which comprises: forming cylinder as viewed in top plan view with a circular chamber the center of which is in alignment with the central axis of the cylinder and having a circular outer wall slightly smaller than the inside diameter of the casing, said cylinder having a diameter of approximately 4.40 inches and a thickness of approximately 0.65 inches, cutting a vane slot in the cylinder, said vane slot being open at one end into the chamber, placing a vane in the vane slot to divide the chamber into a high pressure side and a low pressure side, forming three curved elongated ports spaced from each other in the cylinder between the chamber and outer wall, each port having a length of between 1.61 and 2.26 inches and the thickness of the metal between the port and outer wall of the cylinder is approximately 0.33 inches, a first one of the ports being centered on a diameter line of the cylinder passing through the center of the vane slot and central axis of the cylinder and the second and third ports being located on opposite sides of said diameter line and having the transverse center lines of the second and third ports between 96° and 116° from where said diameter line passes through the first one of the ports, and welding the cylinder outer wall to the casing in alignment with the transverse center line of each port.

Claim 19

Independent Claim 264 words

The method of assembling a rotary compressor of the type having an outer metal cylindrical casing, a metal cylinder with a vane slot and a vane which comprises: forming cylinder as viewed in top plan view with a circular chamber the center of which is in alignment with the central axis of the cylinder and having a circular outer wall slightly smaller than the inside diameter of the casing, said cylinder having a diameter of approximately 4.40 inches and a thickness of approximately 0.65 inches, cutting a vane slot in the cylinder, said vane slot being open at one end into the chamber, placing a vane in the vane slot to divide the chamber into a high pressure side and a low pressure side, forming three curved elongated ports spaced from each other in the cylinder between the chamber and outer wall, each port having a length of between 1.61 and 2.26 inches and the thickness of the metal between the port and outer wall of the cylinder is approximately 0.33 inches, a first one of the ports being centered on a diameter line of the cylinder passing through the center of the vane slot and central axis of the cylinder and the second and third ports being located on opposite sides of said diameter line and having the transverse center lines of the second and third ports between 96° and 116° from where said diameter line passes through the first one of the ports, and welding the cylinder outer wall to the casing in alignment with the transverse center line of each port.

Claim 20

Dependent Claim 26 words

The method of assembling a rotary compressor in accordance with claim 16 wherein the welding is accomplished by a metal inert gas submerged arc spot weld.

Claim 21

Dependent Claim 19 words

The method of assembling a rotary compressor in accordance with claim 17 wherein the spot welds are done simultaneously.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1989-08-11	1990-02-10	1990-08-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1993-08-11	1994-02-10	1994-08-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1997-08-11	1998-02-10	1998-08-12	$7700.00	Window Closed / Lapsed

Rotary compressor and method of assembly

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