US3887304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor construction
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1973-09-20
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Granted: 1975-06-03
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Expires: 1993-09-20
Abstract
Abstract A compressor comprises a compressor body including a motor having a rotatable rotor which is suspended by one or more spring elements within a closed casing. The lower portion of the compressor mounting extends into a damping liquid contained in the lower part of the casing and the compressor is supported in the liquid on a damper stopper which includes a plurality of radially extending blades arranged around the axis of rotation of the rotor and immersed in the damping liquid. The damper stopper advantageously includes a first disk shaped part with radially extending vanes which engage in a lower annular part having angularly spaced radially extending vanes. The lower part is suspended on a leaf spring at the lower part of the casing and it defines chambers between the vanes which are occupied by the vanes of the part secured to the compressor body. The damping liquid is permitted to escape through small size openings defined in either the disk member secured to the compressor or the disk member arranged therebeneath.
Inventors
- 👤 Takashi Otaki
- 👤 Yoshiaki Aihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:14
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0044; F04B39/12; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
206 words
A compressor construction comprising a closed casing, a motor compressor body arranged within said casing and having a rotor rotatable about an axis of rotation, spring means for supporting said motor compressor body in said casing at a location spaced from the interior of said casing, a damping liquid comprising a lubricating oil contained in the lower portion of said casing, and damper stopper means connected to said compressor body and including first and second stopper elements, said first stopper element being secured to said compressor body, said second stopper element being supported below said first stopper element within said housing, each of said first and second stopper elements having radially extending blades, the blades of said first stopper member being interengaged between the blades of the second stopper member, the blades of said second stopper member defining chambers therebetween with escape openings for the passage of the damping liquid during the relative movement of said stopper members and the blades thereof and a support spring supporting said second stopper element and mounted in said housing in the damping liquid and being connected to said second and said housing in a manner to prevent rotation of said second element but to permit some vertical movement thereof.
Claim 2
Dependent Claim
206 words
A compressor construction comprising a closed casing, a motor compressor body arranged within said casing and having a rotor rotatable about an axis of rotation, spring means for supporting said motor compressor body in said casing at a location spaced from the interior of said casing, a damping liquid comprising a lubricating oil contained in the lower portion of said casing, and damper stopper means connected to said compressor body and including first and second stopper elements, said first stopper element being secured to said compressor body, said second stopper element being supported below said first stopper element within said housing, each of said first and second stopper elements having radially extending blades, the blades of said first stopper member being interengaged between the blades of the second stopper member, the blades of said second stopper member defining chambers therebetween with escape openings for the passage of the damping liquid during the relative movement of said stopper members and the blades thereof and a support spring supporting said second stopper element and mounted in said housing in the damping liquid and being connected to said second and said housing in a manner to prevent rotation of said second element but to permit some vertical movement thereof.
Claim 3
Dependent Claim
206 words
A compressor construction comprising a closed casing, a motor compressor body arranged within said casing and having a rotor rotatable about an axis of rotation, spring means for supporting said motor compressor body in said casing at a location spaced from the interior of said casing, a damping liquid comprising a lubricating oil contained in the lower portion of said casing, and damper stopper means connected to said compressor body and including first and second stopper elements, said first stopper element being secured to said compressor body, said second stopper element being supported below said first stopper element within said housing, each of said first and second stopper elements having radially extending blades, the blades of said first stopper member being interengaged between the blades of the second stopper member, the blades of said second stopper member defining chambers therebetween with escape openings for the passage of the damping liquid during the relative movement of said stopper members and the blades thereof and a support spring supporting said second stopper element and mounted in said housing in the damping liquid and being connected to said second and said housing in a manner to prevent rotation of said second element but to permit some vertical movement thereof.
Claim 4
Dependent Claim
206 words
A compressor construction comprising a closed casing, a motor compressor body arranged within said casing and having a rotor rotatable about an axis of rotation, spring means for supporting said motor compressor body in said casing at a location spaced from the interior of said casing, a damping liquid comprising a lubricating oil contained in the lower portion of said casing, and damper stopper means connected to said compressor body and including first and second stopper elements, said first stopper element being secured to said compressor body, said second stopper element being supported below said first stopper element within said housing, each of said first and second stopper elements having radially extending blades, the blades of said first stopper member being interengaged between the blades of the second stopper member, the blades of said second stopper member defining chambers therebetween with escape openings for the passage of the damping liquid during the relative movement of said stopper members and the blades thereof and a support spring supporting said second stopper element and mounted in said housing in the damping liquid and being connected to said second and said housing in a manner to prevent rotation of said second element but to permit some vertical movement thereof.
Claim 5
Dependent Claim
54 words
A compressor, according to claim 1, wherein the blades of the upper one of said damper stopper elements engage upon the tops of the blades of the lower one of said damper stopper elements and of a size that they are wider than the spacing between the blades of said lower damper stopper element.
Claim 6
Dependent Claim
147 words
A compressor construction comprising a closed casing, a motor compressor body arranged within said casing and having a rotor rotatable about an axis of rotation, spring means for supporting saiD motor compressor body in said casing at a location spaced from the interior of said casing, a damping liquid comprising a lubricating oil contained in the lower portion of said casing, and damper stopper means connected to said compressor body and including said spring means include a lug extending outwardly from a side of said motor compressor body with an upstanding rod spring thereon, said housing having a spring bearing engaged with said upstanding rod spring, said damper stopper means comprising first and second damper stopper elements, one of said elements being secured to said motor compressor body and a leaf spring in the bottom of said housing resiliently supporting the other of said damper stopper elements.
Claim 7
Dependent Claim
147 words
A compressor construction comprising a closed casing, a motor compressor body arranged within said casing and having a rotor rotatable about an axis of rotation, spring means for supporting saiD motor compressor body in said casing at a location spaced from the interior of said casing, a damping liquid comprising a lubricating oil contained in the lower portion of said casing, and damper stopper means connected to said compressor body and including said spring means include a lug extending outwardly from a side of said motor compressor body with an upstanding rod spring thereon, said housing having a spring bearing engaged with said upstanding rod spring, said damper stopper means comprising first and second damper stopper elements, one of said elements being secured to said motor compressor body and a leaf spring in the bottom of said housing resiliently supporting the other of said damper stopper elements.
Claim 8
Dependent Claim
161 words
A compressor construction comprising a housing, a motor driven compressor body including a driving motor and a rotatable rotor located within said housing, a plurality of rod springs arranged around the circumference of said motor compressor body and secured to said housing holding said motor compressor body at a spaced location from the interior of said housing, a lubrication oil for damping and lubricating said motor in the lower portion of said housing, a damper stopper assembly connected to the bottom of said motor compressor body and located in said lubricating oil and including a first damper stopper element secured to said body and a second damper stopper element rotatably movable in respect to and located below said first damper stopper element, and a leaf spring supporting said second damper stopper element below said motor compressor body and preventing rotation thereof, said first and second damper stopper elements having radially extending blades arranged around the axis of rotation of the rotor.
Claim 9
Dependent Claim
161 words
A compressor construction comprising a housing, a motor driven compressor body including a driving motor and a rotatable rotor located within said housing, a plurality of rod springs arranged around the circumference of said motor compressor body and secured to said housing holding said motor compressor body at a spaced location from the interior of said housing, a lubrication oil for damping and lubricating said motor in the lower portion of said housing, a damper stopper assembly connected to the bottom of said motor compressor body and located in said lubricating oil and including a first damper stopper element secured to said body and a second damper stopper element rotatably movable in respect to and located below said first damper stopper element, and a leaf spring supporting said second damper stopper element below said motor compressor body and preventing rotation thereof, said first and second damper stopper elements having radially extending blades arranged around the axis of rotation of the rotor.
Claim 10
Dependent Claim
79 words
A compressor, according to claim 4, wherein said leaf spring includes ends engaged with the bottom of said housing, and brackets arranged over each end of said leaf spring leaving the outward expansive movement thereof under the weight of said damper stopper, said blades of said first damper stopper being disposed within alternate blades of said second damper stopper, and securing clips holding said first and second damper stopper elements against vertical displacement but permitting relative rotational movement therebetween.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |