US3656769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid sealing joint and gasket
Assignee: Parker Hannifin Corp
•
Filing: 1968-09-30
•
Granted: 1972-04-18
•
Expires: 1988-09-30
Abstract
Abstract A sealed joint between a pair of members in which one member has a raised rib for sealing contacting the other member at one location and has a predetermined clearance with the other member at another location, one of the members being yieldable under clamping pressure to take up the clearance upon application of predetermined pressure upon the rib. The invention also provides means for achieving substantially equal unit sealing pressure throughout the length of the rib despite uneven yielding of the one member.
Inventors
- 👤 Jerry G Jelinek
- 👤 Gary L Duesenberry
- 👤 Thomas J Mccuistion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:44
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/18; F16L23/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
191 words
A joint comprising a pair of members at least one of which has a cavity for containing fluid and at least one having a bendable portion, each member having a surface surrounding the cavity, one of the surfaces having a contact portion and having a rigid rib projecting therefrom into contact with the other surface, said rib being spaced laterally from said contact portion, means between said contact portion and said rib clamping the members against each other, said rib when in contact with said other surface while said clamping means is in untightened condition serving to establish a predetermined clearance between said surfaces, said clearance being such that when the clamping means is tightened sufficiently for causing said other member to impose a predetermined compressive force upon the rib said bendable portion will be bent so as to take up said clearance only at said contact portion and establish contact between said contact portion and said other surface, said rib being sufficiently rigid to retain substantially its initial form under said predetermined compressive force, whereby said clearance is maintained between said rib and said contact portion at said clamping means.
Claim 2
Dependent Claim
191 words
A joint comprising a pair of members at least one of which has a cavity for containing fluid and at least one having a bendable portion, each member having a surface surrounding the cavity, one of the surfaces having a contact portion and having a rigid rib projecting therefrom into contact with the other surface, said rib being spaced laterally from said contact portion, means between said contact portion and said rib clamping the members against each other, said rib when in contact with said other surface while said clamping means is in untightened condition serving to establish a predetermined clearance between said surfaces, said clearance being such that when the clamping means is tightened sufficiently for causing said other member to impose a predetermined compressive force upon the rib said bendable portion will be bent so as to take up said clearance only at said contact portion and establish contact between said contact portion and said other surface, said rib being sufficiently rigid to retain substantially its initial form under said predetermined compressive force, whereby said clearance is maintained between said rib and said contact portion at said clamping means.
Claim 3
Dependent Claim
50 words
The joint of claim 1 in which the bendable portion may be bent additionally after said contact by further tightening of said clamping means whereby additional compressive force is applied to said rib at a lesser rate with relation to the increase in clamping force applied by the clamping means.
Claim 4
Dependent Claim
24 words
The joint of claim 1 in which the clamping means includes a plurality of bolts located radially between the rib and said contact portion.
Claim 5
Dependent Claim
34 words
The joint of claim 1 in which one of the members is a gasket and there is a third member, and the gasket is clamped between the third and the other of said members.
Claim 6
Dependent Claim
30 words
The joint of claim 4 in which said rib is on said gasket and there is another rib on an opposite surface of the gasket that contacts said third member.
Claim 7
Dependent Claim
12 words
The joint of claim 5 in which said ribs are radially offset.
Claim 8
Dependent Claim
63 words
The joint of claim 1 in which said clamping means comprises a series of circumferentially spaced bolts that exert force through said bendable portion clamping said rib against said other surface, said rib being so shaped and located relative to said bolts that the unit pressure exerted against the rib by said other surface is substantially equal throughout the length of the rib.
Claim 9
Dependent Claim
40 words
The joint of claim 7 in which said shaping includes varying the width of the rib whereby the rib is relatively wide at locations close to said bolts and is progressively narrower at locations progressively more distant from said bolts.
Claim 10
Dependent Claim
39 words
The joint of claim 7 in which said shaping includes varying of the radial spacing of the rib about its circumference in a manner to have a substantial portion of the rib radially spaced equal amounts from said bolts.
References Cited (Backward Citations)
US306293A
Cited
FR342721A
Cited
US1454187A
Cited
US1731404A
Cited
DE563738C
Cited
US2307440A
Cited
US2604507A
Cited
US2543963A
Cited
US3195906A
Cited
US3151869A
Cited
US3215442A
Cited
GB935356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |