US3563555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of replacing sealing rings around shafts
Assignee: Delaware Capital Formation Inc
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Filing: 1968-03-29
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Granted: 1971-02-16
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Expires: 1988-03-29
Abstract
Abstract In a method of replacing flexible sealing rings around shafts in massive installations, the steps of disconnecting and axially shifting parts to provide working space, radially cutting each new sealing ring to provide separable adjacent ends which may be flexed and spread to install the sealing rings around the shaft by transverse movement into installed position, adhesively bonding the cut ends together while around the shaft, cutting off the worn sealing rings, and reassembling the parts.
Inventors
- 👤 Harold O Koons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3272; Y; Y10; Y10S; Y10S277/00; Y10S277/922
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
In a method or replacing a flexible sealing ring around a shaft, the steps of cutting a new sealing ring to provide separable ends, spreading said ends and flexing the ring while moving it in a transverse direction into installed position around the shaft, adhesively bonding the cut ends together while the sealing ring is around the shaft, cutting off the worn sealing ring, and axially moving the new sealing ring into assembled position wherein the shaft has an axially shiftable portion and wherein there is a seal assembly having disconnectable ring-shaped parts for supporting the sealing ring, the method including the step of disconnecting and axially shifting sealing-ring-supporting parts into a portion of said working space and using an adjacent portion of said working space to accommodate the new sealing ring during bonding.
Claim 2
Dependent Claim
134 words
In a method or replacing a flexible sealing ring around a shaft, the steps of cutting a new sealing ring to provide separable ends, spreading said ends and flexing the ring while moving it in a transverse direction into installed position around the shaft, adhesively bonding the cut ends together while the sealing ring is around the shaft, cutting off the worn sealing ring, and axially moving the new sealing ring into assembled position wherein the shaft has an axially shiftable portion and wherein there is a seal assembly having disconnectable ring-shaped parts for supporting the sealing ring, the method including the step of disconnecting and axially shifting sealing-ring-supporting parts into a portion of said working space and using an adjacent portion of said working space to accommodate the new sealing ring during bonding.
Claim 3
Dependent Claim
35 words
In a method of replacing a flexible sealing ring as claimed in claim 1, the step of clamping the radially cut portion of the new sealing ring against one of said sealing-ring-supporting parts during bonding.
Claim 4
Dependent Claim
106 words
In a method of replacing a flexible sealing ring as claimed in claim 1 wherein the rIng-shaped parts for supporting the sealing ring have circumferentially spaced bolt holes and wherein the sealing ring has similarly spaced bolt holes, the method including the making of the radial cut in the new sealing ring between two bolt holes, and including the clamping of the new sealing ring against one of the ring-shaped-supporting parts by the use of bolts passing through some of said bolt holes in said holding part and through the bolt holes in the sealing ring which are on each side of the line of cut.
Claim 5
Dependent Claim
49 words
In a method of replacing a flexible sealing ring as claimed in claim 1 wherein one of said sealing-ring-supporting parts is a guide ring, the method including the supporting of the guide ring in concentric position with respect to the shaft before said sealing-ring-supporting parts are disconnected and shifted.
Claim 6
Dependent Claim
45 words
In a method of replacing a flexible sealing ring as claimed in claim 1 wherein there is a casing for the seal assembly, the method including the step of axially shifting said casing while maintaining the casing in concentric position with respect to said shaft.
Claim 7
Dependent Claim
130 words
In a method of replacing a flexible sealing ring around a shaft, the steps of cutting a new sealing ring to provide separable ends, spreading said ends and flexing the ring while moving it in a transverse direction into installed position around the shaft, adhesively bonding the cut ends together while the sealing ring is around the shaft, cutting off the worn sealing ring, and axially moving the new sealing ring into assembled position, the method including the application of the adhesive to the cut ends while the sealing ring is around the shaft, the clamping of the adhesively coated ends together, the curing of the adhesive by heat while the ends are clamped and while the ring is around the shaft, and the removing of the clamps after curing.
Claim 8
Dependent Claim
130 words
In a method of replacing a flexible sealing ring around a shaft, the steps of cutting a new sealing ring to provide separable ends, spreading said ends and flexing the ring while moving it in a transverse direction into installed position around the shaft, adhesively bonding the cut ends together while the sealing ring is around the shaft, cutting off the worn sealing ring, and axially moving the new sealing ring into assembled position, the method including the application of the adhesive to the cut ends while the sealing ring is around the shaft, the clamping of the adhesively coated ends together, the curing of the adhesive by heat while the ends are clamped and while the ring is around the shaft, and the removing of the clamps after curing.
Claim 9
Dependent Claim
28 words
In a method of replacing a flexible sealing ring around a shaft as claimed in claim 6, the step of protecting the clamps from the adhesive during bonding.
Claim 10
Dependent Claim
70 words
In a method of replacing a flexible sealing ring as claimed in claim 1 wherein the shaft is a propeller shaft in a ship and has a separable tailshaft portion, the method including the step of uncoupling the tailshaft portion and axially shifting it in an aft direction to provide working space of a size to receive the new sealing ring and permit carrying out of the adhesive bonding procedure.
Claim 11
Dependent Claim
46 words
In a method of replacing a flexible sealing ring as claimed in claim 8 wherein the tailshaft portion carries the propeller of the ship and in which the axial shifting and installation of the new seal is performed while the propeller remains on said tailshaft portion.
References Cited (Backward Citations)
US1942489A
Cited
US3413008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |