FR2334894A1 - Reciprocating piston for pumps and engines - has crossed helical and circumferential grooves on curved surface holding oil for sealing - Google Patents
Reciprocating piston for pumps and engines - has crossed helical and circumferential grooves on curved surface holding oil for sealingInfo
- Publication number
- FR2334894A1 FR2334894A1 FR7538168A FR7538168A FR2334894A1 FR 2334894 A1 FR2334894 A1 FR 2334894A1 FR 7538168 A FR7538168 A FR 7538168A FR 7538168 A FR7538168 A FR 7538168A FR 2334894 A1 FR2334894 A1 FR 2334894A1
- Authority
- FR
- France
- Prior art keywords
- curved surface
- helical
- pumps
- engines
- circumferential grooves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The reciprocating piston for internal combustion engines, steam engines, gas and pneumatic motors and pumps and compressors has a high sealing effect without the use of separate piston rings. A section of the pistons curved surface is provided with right hand and left hand intersecting helical channels. The curved surface ends have also two circumferential grooves. These grooves are connected by helical channels. The helical and circumferential channels collect and accommodate lubricating oil and ensure sealing. The piston head has a number of circumferential grooves which are separated by ribs with V shaped profiles. The helical grooves have rectangular shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7538168A FR2334894A1 (en) | 1975-12-12 | 1975-12-12 | Reciprocating piston for pumps and engines - has crossed helical and circumferential grooves on curved surface holding oil for sealing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7538168A FR2334894A1 (en) | 1975-12-12 | 1975-12-12 | Reciprocating piston for pumps and engines - has crossed helical and circumferential grooves on curved surface holding oil for sealing |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2334894A1 true FR2334894A1 (en) | 1977-07-08 |
FR2334894B1 FR2334894B1 (en) | 1981-08-21 |
Family
ID=9163695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7538168A Granted FR2334894A1 (en) | 1975-12-12 | 1975-12-12 | Reciprocating piston for pumps and engines - has crossed helical and circumferential grooves on curved surface holding oil for sealing |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2334894A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1840419A1 (en) * | 2006-03-31 | 2007-10-03 | Federal-Mogul Operations Italy S.r.l. Stabilimento di Desenzano | Piston with surface finishing |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE391607A (en) * | ||||
FR328094A (en) * | 1902-10-02 | 1903-12-14 | Andrieux Jules | Piston system for all types of engines |
FR1116371A (en) * | 1953-12-24 | 1956-05-07 | Piston for piston engines | |
DE1675047A1 (en) * | 1968-03-14 | 1970-12-03 | Arno Fischer | Device for guiding parts moving against each other |
-
1975
- 1975-12-12 FR FR7538168A patent/FR2334894A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE391607A (en) * | ||||
FR328094A (en) * | 1902-10-02 | 1903-12-14 | Andrieux Jules | Piston system for all types of engines |
FR1116371A (en) * | 1953-12-24 | 1956-05-07 | Piston for piston engines | |
DE1675047A1 (en) * | 1968-03-14 | 1970-12-03 | Arno Fischer | Device for guiding parts moving against each other |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1840419A1 (en) * | 2006-03-31 | 2007-10-03 | Federal-Mogul Operations Italy S.r.l. Stabilimento di Desenzano | Piston with surface finishing |
Also Published As
Publication number | Publication date |
---|---|
FR2334894B1 (en) | 1981-08-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |