US3735814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient slip suspension means for hydraulic packer
Assignee: Dresser Industries Inc
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Filing: 1971-05-24
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Granted: 1973-05-29
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Expires: 1991-05-24
Abstract
Abstract A resilient mounting for the upper slip in a Hydraulic packer which holds the upper slip carrier and the slip carried thereby in retracted position out of contact with the upper packer head while running in the hole so that if the packer is stopped suddenly or the slip encounters an obstruction which tends to cause the slip to move downwardly in contact with the upper packer head, a spring in the suspension head will cause the carrier and the slip mounted thereon to move back into relaxed running position out of contact with the casing.
Inventors
- 👤 A J Dallas Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:16
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1294; E21B33/1295
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
Means for suspending a slip to a well tool comprising: a tubular mandrel; a housing attached to the mandrel; a slip carrier slidably disposed about the mandrel, said slip carrier having a shoulder thereon and disposed within said housing; resilient means in the housing in contact with said shoulder suspending the slip carrier to said housing; a slip slidably disposed on the slip carrier below the housing; and a resilient take-up ring between the upper end of the slip carrier and the housing to control the movement of the carrier into the housing.
Claim 2
Dependent Claim
93 words
Means for suspending a slip to a well tool comprising: a tubular mandrel; a housing attached to the mandrel; a slip carrier slidably disposed about the mandrel, said slip carrier having a shoulder thereon and disposed within said housing; resilient means in the housing in contact with said shoulder suspending the slip carrier to said housing; a slip slidably disposed on the slip carrier below the housing; and a resilient take-up ring between the upper end of the slip carrier and the housing to control the movement of the carrier into the housing.
Claim 3
Dependent Claim
105 words
Means for suspending a slip to a well tool comprising: a tubular mandrel; a housing attached to the mandrel; a slip carrier slidably disposed about the mandrel; resilient means in the housing suspending the slip carrier thereto; and a slip slidably disposed on the slip carrier below the housing, said housing comprising a skirt-like member in spaced relation to the mandrel; an inwardly extending shoulder at the lower end of the skirt-like member against which the lower end of the resilient member is positioned; and a shoulder on the upper end of the carrier providing a stop for the upper end of the resilient member.
Claim 4
Dependent Claim
105 words
Means for suspending a slip to a well tool comprising: a tubular mandrel; a housing attached to the mandrel; a slip carrier slidably disposed about the mandrel; resilient means in the housing suspending the slip carrier thereto; and a slip slidably disposed on the slip carrier below the housing, said housing comprising a skirt-like member in spaced relation to the mandrel; an inwardly extending shoulder at the lower end of the skirt-like member against which the lower end of the resilient member is positioned; and a shoulder on the upper end of the carrier providing a stop for the upper end of the resilient member.
Claim 5
Dependent Claim
14 words
The combination called for in claim 2 wherein the resilient member is a spring.
Claim 6
Dependent Claim
47 words
The combination called for in claim 1 wherein the slip is pivotally mounted on the slip carrier and is arranged to be tilted laterally by a force exerted against the end thereof; and spring means between the slip and the carrier to bias same to vertical position.
Claim 7
Dependent Claim
36 words
The combination called for in claim 4 with the addition of a member carried by the mandrel movably disposed thereabout and arranged to engage the end of the slip to exert force thereagainst to tilt same.
Claim 8
Dependent Claim
22 words
The combination called for in claim 5 wherein the member engageable with the slip to tilt same is a balance valve housing.
Claim 9
Dependent Claim
45 words
The combination called for in claim 4 with the addition of spaced shoulders on the slip carrier providing a recessed area thereon, the spring member being carried by the slip and engaged with the area between the said shoulders biasing the slip into vertical position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |