Patent US3861691A successfully refreshed from Google Patents.
US3861691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing member
Assignee: Texacone Co
•
Filing: 1973-06-06
•
Granted: 1975-01-21
•
Expires: 1993-06-06
Abstract
Abstract A packing member comprises an annular body having inner and outer sealing lips extending from it. A plurality of holes extend axially into the body from spaced points along a circle concentric with the body. The member may be split along a line extending through at least two angles axially of the body, if desired.
Inventors
- 👤 John H Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:12
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/03; F16L17/035; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204; F16J15/3232; F16J15/3236; F16J15/3268; F16J15/3272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
234 words
A packing member comprising: an annular body defined by a generally right circular cylindrical outer wall, a generally right circular cylindrical inner wall, a generally radially extending, substantially flat upper wall extending between the inner and outer walls at the upper ends thereof, and a generally radially extending, substantially flat lower wall extending between the inner and outer walls at the lower ends thereof; said annular body having a pair of oppositely sloping end faces defining a pair of concentric grooves formed in the upper wall thereof to define a pair of aligned inner and outer sealing lips located at the intersections of the upper wall and the inner and outer walls, respectively; said annular body further having a plurality of circular holes formed in the upper wall each extending axially into said wall from equally spaced points concentric with and located between the grooves; each of said holes tangentially intersecting both of said grooves to form slot-shaped openings interconnecting the holes and the grooves; said circle of axially extending holes being centered between the inner and outer walls of the body; said grooves being equally and oppositely spaced relative to the holes and having generally wedge-shaped cross sections each characterized by a substantially axially extending surface adjacent the holes and an angularly extending surface comprising said sloping end face intersecting said body at the intersection of the upper wall and the adjacent wall.
Claim 2
Dependent Claim
234 words
A packing member comprising: an annular body defined by a generally right circular cylindrical outer wall, a generally right circular cylindrical inner wall, a generally radially extending, substantially flat upper wall extending between the inner and outer walls at the upper ends thereof, and a generally radially extending, substantially flat lower wall extending between the inner and outer walls at the lower ends thereof; said annular body having a pair of oppositely sloping end faces defining a pair of concentric grooves formed in the upper wall thereof to define a pair of aligned inner and outer sealing lips located at the intersections of the upper wall and the inner and outer walls, respectively; said annular body further having a plurality of circular holes formed in the upper wall each extending axially into said wall from equally spaced points concentric with and located between the grooves; each of said holes tangentially intersecting both of said grooves to form slot-shaped openings interconnecting the holes and the grooves; said circle of axially extending holes being centered between the inner and outer walls of the body; said grooves being equally and oppositely spaced relative to the holes and having generally wedge-shaped cross sections each characterized by a substantially axially extending surface adjacent the holes and an angularly extending surface comprising said sloping end face intersecting said body at the intersection of the upper wall and the adjacent wall.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |