Patent US4860995A successfully refreshed from Google Patents.
US4860995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve element for use in pumps for handling fluids containing abrasive materials
Assignee: Utex Industries Inc
•
Filing: 1988-04-19
•
Granted: 1989-08-29
•
Expires: 2008-04-19
Abstract
Abstract A valve element for use in a high pressure pump, the valve element having a body portion with a top side and a bottom side, a guide means attached to and projecting away from the bottom side of the body portion and an insert secured to the top side of the body portion, the insert having a second guide which projects away from the top side of the body portion and an annularly extending flange which defines an annularly extending sealing surface, the insert being formed of a generally non-metallic material having a specific gravity less than the specific gravity of the material forming the body portion and the guide means projecting from the bottom side of the body portion.
Inventors
- 👤 John T. Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:31
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B53/1027; F04B53/1087; Y; Y10; Y10S; Y10S137/00; Y10S137/902; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7867; Y10T137/7868; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7934
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
120 words
A valve element having a lowered center of gravity comprising: a body portion having a top side and a bottom side; a first guide means attached to and projecting downwardly away from said bottom side of said body portion; and an insert secured to said top side of said body portion, said insert including a second guide means projecting upwardly away from said top side of said body portion and a flange portion defining an annularly extending sealing surface, said flange portion being disposed between the first and second guide means, said insert being formed of a substantially non-metallic material having a specific gravity less than the specific gravity of material forming said body portion and said first guide means.
Claim 2
Dependent Claim
120 words
A valve element having a lowered center of gravity comprising: a body portion having a top side and a bottom side; a first guide means attached to and projecting downwardly away from said bottom side of said body portion; and an insert secured to said top side of said body portion, said insert including a second guide means projecting upwardly away from said top side of said body portion and a flange portion defining an annularly extending sealing surface, said flange portion being disposed between the first and second guide means, said insert being formed of a substantially non-metallic material having a specific gravity less than the specific gravity of material forming said body portion and said first guide means.
Claim 3
Dependent Claim
18 words
The valve element of claim 1 wherein said body portion and said first guide comprise a monolithic structure.
Claim 4
Dependent Claim
16 words
The valve element of claim 1 wherein said first guide means comprises a generally cylindrical member.
Claim 5
Dependent Claim
46 words
The valve element of claim 1 wherein said first guide means includes a neck portion attached to the bottom side of said body portion and a plurality of legs depending generally outwardly and downwardly from said neck portion distal said bottom side of said body portion.
Claim 6
Dependent Claim
16 words
The valve element of claim 1 wherein said second guide means comprises a generally cylindrical member.
Claim 7
Dependent Claim
21 words
The valve element of claim 5 wherein said cylindrical member has a generally central bore extending at least partially axially therethrough.
Claim 8
Dependent Claim
34 words
The valve element of claim 5 including a spindle attached to and projecting away from said top side of said body portion, said spindle being received in said bore formed in said cylindrical member.
Claim 9
Dependent Claim
28 words
The valve element of claim 1 wherein said insert is secured to said body portion by bonding said flange portion to said top side of said body portion.
Claim 10
Dependent Claim
17 words
The valve element of claim 1 including means to mechanically lock said insert to said body portion.
Claim 11
Dependent Claim
33 words
The valve element of claim 1 wherein said flange portion defining said annularly extending seal surface is comprised of a material which is more resilient than the material of said second guide means.
Claim 12
Dependent Claim
21 words
The valve element of claim 1 wherein said first and second guide means comprise cylindrical members which are generally coaxially aligned.
Claim 13
Dependent Claim
13 words
The valve element of claim 1 wherein said insert comprises a monolithic structure.
Claim 14
Dependent Claim
25 words
The valve element of claim 3 wherein said first guide means includes means forming a fluid passageway extending generally axially along said first guide means.
Claim 15
Dependent Claim
38 words
The valve element of claim 13 wherein said means forming said fluid passageway comprises a plurality of grooves formed on and extending axially along said cylindrical member, said grooves being generally parallel and equally spaced from one another.
Claim 16
Dependent Claim
24 words
The valve element of claim 13 wherein said means forming said fluid passageway comprises at least one slot extending axially through said cylindrical member.
Claim 17
Dependent Claim
21 words
The valve element of claim 15 wherein there are two of said slots, each of said slots dissecting said cylindrical member.
References Cited (Backward Citations)
FR322393A
Cited
US1516846A
Cited
US1716896A
Cited
US2011547A
Cited
US2103503A
Cited
US2163472A
Cited
US3324880A
Cited
US3552426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |