US4343496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split gland
Assignee: United States Department of Energy
•
Filing: 1980-07-31
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Granted: 1982-08-10
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Expires: 2000-07-31
Abstract
Abstract The disclosure relates to a split gland laterally fittable over tubing. Two essentially mirror image half glands are juxtaposed, held together by a spring clip and aligned by a retainer.
Inventors
- 👤 Joseph J. Petranto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/0231; F16L19/04; F16L19/06; F16L19/065; F16L19/0653; F16L41/00; F16L41/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
181 words
A split gland comprising: a pair of separate unconnected essentially mirror image half glands, said pair fittable together about a mutual axis of rotation, each of said half glands comprising a threaded portion, a shoulder, a wrench engaging head portion a slot, and a concave inner surface along said mutual axis of rotation, said half glands being held together by a spring clip having a circumferential extent greater than 180 degrees disposed about said shoulders and being maintained essentially fixedly juxtaposed to one another with substantial thread alignment by a retainer fitted into said slot in each of said half glands wherein said spring clip allows said half glands to be spread sufficiently to allow said gland to be slipped laterally over tubing and wherein each said concave inner surface is defined by a wall portion and together engage the tubing and define a teardrop shape with the narrow portion being located at the area which passes laterally over the tubing so that upon removal of said gland from the tubing said teardrop shape inner surface promotes spreading of the gland.
Claim 2
Dependent Claim
181 words
A split gland comprising: a pair of separate unconnected essentially mirror image half glands, said pair fittable together about a mutual axis of rotation, each of said half glands comprising a threaded portion, a shoulder, a wrench engaging head portion a slot, and a concave inner surface along said mutual axis of rotation, said half glands being held together by a spring clip having a circumferential extent greater than 180 degrees disposed about said shoulders and being maintained essentially fixedly juxtaposed to one another with substantial thread alignment by a retainer fitted into said slot in each of said half glands wherein said spring clip allows said half glands to be spread sufficiently to allow said gland to be slipped laterally over tubing and wherein each said concave inner surface is defined by a wall portion and together engage the tubing and define a teardrop shape with the narrow portion being located at the area which passes laterally over the tubing so that upon removal of said gland from the tubing said teardrop shape inner surface promotes spreading of the gland.
Claim 3
Dependent Claim
12 words
The invention of claim 1 wherein said retainer is substantially horseshoe shaped.
Claim 4
Dependent Claim
18 words
The invention of claim 1 wherein said shoulder is flanged to retain said spring clip in position thereon.
Claim 5
Dependent Claim
23 words
The invention of claim 1 wherein said spring clip is essentially circular in shape, has ends and a spreadable gap between said ends.
Claim 6
Dependent Claim
43 words
The invention of claim 4 wherein said spring clip has tabs at its ends, said shoulder is essentially circular, having a flange which has ends, said tabs being engagable with the ends of said shoulder flanges to maintain said spring clip in position.
Claim 7
Dependent Claim
39 words
The invention of claim 1 wherein said wrench engaging head of said gland comprises a notch for engaging tubing so that as said notch is pushed against tubing, said half glands spread and said gland slips onto the tubing.
Claim 8
Dependent Claim
10 words
The invention of claim 6 wherein said notch is V-shaped.
Claim 9
Dependent Claim
16 words
The invention of claim 1 wherein said gland comprises a mouth for use with flared tubing.
Claim 10
Dependent Claim
16 words
The invention of claim 1 wherein said gland comprises a mouth for use with ferruled tubing.
Claim 11
Dependent Claim
26 words
The invention of claim 1 wherein said wrench engaging head portions comprise a radiused notch to render said gland laterally slippable over tubing with reduced spreading.
Claim 12
Dependent Claim
20 words
The invention of claim 1 wherein said gland is spreadable as it slides over tubing lengthwise to accommodate bends therein.
References Cited (Backward Citations)
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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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |