US3787059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston ring end guide
Assignee: Sealed Power Technologies LP
•
Filing: 1972-08-14
•
Granted: 1974-01-22
•
Expires: 1992-08-14
Abstract
Abstract An end guide for piston rings and particularly circumferential expansion rings of substantially U-shaped cross section. The rings are split and the end guide functions to align the split ends. The end guide consists of a first member having a head thereon and a projecting lance member. The head is dimensioned to be snugly received between opposed radially extending legs of the ring in a press-fit relation on one side of the gap with the lance crossing the gap and extending between the legs of the ring on the other side of the gap. A second member is press-fit between the legs on the opposite side of the gap from the head and prevents exit of the end of the lance from that side of the gap. The first and second members are attached together at the time of installation of the end guide into the ring.
Inventors
- 👤 H Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:01
CPC Classifications
F; F16; F16J; F16J9/00; F16J9/12; F16J9/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
61 words
A piston ring end guide for use in connection with a substantially U-shaped cross section expander ring which comprises: an elongated body, a head portion at one end of said body, a lance portion projecting from said head portion, said lance portion being curved, the head portion having nibs projecting from opposite sides thereof transverse to the projection of the lance.
Claim 2
Dependent Claim
61 words
A piston ring end guide for use in connection with a substantially U-shaped cross section expander ring which comprises: an elongated body, a head portion at one end of said body, a lance portion projecting from said head portion, said lance portion being curved, the head portion having nibs projecting from opposite sides thereof transverse to the projection of the lance.
Claim 3
Dependent Claim
24 words
The end guide of claim 1 wherein a second head portion is provided, the second head portion having nibs projecting from opposite sides thereof.
Claim 4
Dependent Claim
21 words
The end guide of claim 2 wherein the second head portion is attached to the lance portion through a frangible connection.
Claim 5
Dependent Claim
21 words
The gap latch of claim 3 wherein the lance portion terminates in an increased dimensioned end remote from the head portion.
Claim 6
Dependent Claim
54 words
A piston ring end guide comprising an elongated body member, said body member having a head portion at one end thereof with a lance portion projecting therefrom, the lance portion curved, a latching head projecting from said lance portion at an angle thereto, said latching head connected to the lance through a frangible connection.
Claim 7
Dependent Claim
54 words
A piston ring end guide comprising an elongated body member, said body member having a head portion at one end thereof with a lance portion projecting therefrom, the lance portion curved, a latching head projecting from said lance portion at an angle thereto, said latching head connected to the lance through a frangible connection.
Claim 8
Dependent Claim
156 words
A piston ring and end guide combination comprising a split piston ring having a radially extending channel therein from the outer diameter thereof, a gap latch in said channel, said gap latch having an elongated body portion, a head at one end of said body portion, a lance projecting from said head, said head received in the channel in press-fit relation with top and bottom walls of the channel, said head positioned on one side of said split, the lance projecting across the said split into the channel on the other side of the said split, a latching head positioned in the said channel on the said other side of the said split, said latching head received in the said channel in press-fit relation with top and bottom walls of the channel, and said latching head effective to prevent withdrawal of the said lance from the said channel on the said other side of the split.
Claim 9
Dependent Claim
156 words
A piston ring and end guide combination comprising a split piston ring having a radially extending channel therein from the outer diameter thereof, a gap latch in said channel, said gap latch having an elongated body portion, a head at one end of said body portion, a lance projecting from said head, said head received in the channel in press-fit relation with top and bottom walls of the channel, said head positioned on one side of said split, the lance projecting across the said split into the channel on the other side of the said split, a latching head positioned in the said channel on the said other side of the said split, said latching head received in the said channel in press-fit relation with top and bottom walls of the channel, and said latching head effective to prevent withdrawal of the said lance from the said channel on the said other side of the split.
Claim 10
Dependent Claim
35 words
The assembly of claim 6 wherein the said head and the said latching head have axially projecting nibs on opposite faces, the said nibs engaging the said top and bottom walls of the said channel.
Claim 11
Dependent Claim
34 words
The assembly of claim 7 wherein the said nibs are deformed from their free state, their free state axial height from opposed axial ends being greater than the axial height of the said channel.
Claim 12
Independent Claim
231 words
The method of manufacturing a piston ring assembly including a gap latch which comprises the steps of: forming a piston ring having a radial channel therein from a circumferential face thereof, the channel having axially spaced-apart top and bottom walls, forming a gap latch assembly, said gap latch assembly including a body portiOn with a head at one end thereof and a lance portion projecting from the head and a latching head attached to and projecting from the lance portion at an angle thereto, the latching head attached to the lance portion through a frangible connection, aligning the gap latch assembly with the said channel with the head portion on one side of a split in the said ring and the latching head on the other side of the split in said ring, forcing the said gap latch assembly into the said channel and breaking the frangible connection between the said latching head and the said lance, and positioning the said end guide assembly in the said channel with said head on one side of the said split and the said latching head on the other side of the said split with the lance having a portion thereof between a back wall of the said channel and the said latching head and the said head and latching head in press-fit engagement with the top and bottom walls of the said channel.
Claim 13
Independent Claim
231 words
The method of manufacturing a piston ring assembly including a gap latch which comprises the steps of: forming a piston ring having a radial channel therein from a circumferential face thereof, the channel having axially spaced-apart top and bottom walls, forming a gap latch assembly, said gap latch assembly including a body portiOn with a head at one end thereof and a lance portion projecting from the head and a latching head attached to and projecting from the lance portion at an angle thereto, the latching head attached to the lance portion through a frangible connection, aligning the gap latch assembly with the said channel with the head portion on one side of a split in the said ring and the latching head on the other side of the split in said ring, forcing the said gap latch assembly into the said channel and breaking the frangible connection between the said latching head and the said lance, and positioning the said end guide assembly in the said channel with said head on one side of the said split and the said latching head on the other side of the said split with the lance having a portion thereof between a back wall of the said channel and the said latching head and the said head and latching head in press-fit engagement with the top and bottom walls of the said channel.
Claim 14
Dependent Claim
28 words
The method of claim 9 including the steps of forming a plurality of said gap latch assemblies as a single piece and individually separating them from the piece.
Claim 15
Dependent Claim
18 words
The method of claim 10 wherein the single piece is formed as a ladder of gap latch assemblies.
References Cited (Backward Citations)
US1556104A
Cited
US2826468A
Cited
US2768036A
Cited
US3261612A
Cited
US3472521A
Cited
US3598419A
Cited
US3601415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |