
Piston ring apparatus - Micro-Precision Operations, …
14-04-1998 · Apparatus for assembling a ring on each of successive pistons, comprising a piston ringing station having means for locating each successive piston in a manner to position a circumferential piston groove in a predetermined ring-receiving position, and fiber optic switch means proximate the piston locating means and a side of said groove for directing a light beam tangentially …

US8365588B2 - Piston ring tension measurement …
The piston ring tension measurement apparatus of the present invention is provided with a support table which supports a measured piston ring, a first band which is to be wound around an outer circumferential part of the measured piston ring and which is fastened at its two end sides by fastening means, a second band which is to be wound around an outer circumferential part of the measured ...

US6196063B1 - Method and apparatus for …
An apparatus for measuring tension of piston rings includes a cylindrical support fixture having a circumferential groove formed therearound for receiving and holding a piston ring. A rigid base supports a plurality of components of the apparatus. A strong, thin band, formed from a material sufficiently strong to withstand repeated applications of pulling force thereto, is mounted to the base ...

US20060102131A1 - Piston apparatus with oil …
The present invention provides a piston apparatus having an oil scraper ring, by which smoke due to incomplete combustion of fuel is prevented in a manner of preventing oil attached to an inner cylinder wall and piston in an internal combustion engine from rising into a combustion room by a reverse pressure and preventing a blow-by phenomenon and in which the oil scraper ring can play roles as ...

US1637482A - Method and apparatus for testing …
ring band piston apparatus cylinder Prior art date 1925-10-08 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.) Expired - Lifetime Application number US61210A Inventor Harry S Graves

PISTON AND CYLINDER APPARATUS - BENDIX …
08-10-1986 · Apparatus as claimed in claim 1 characterised by said sleeve comprising an upper-bearing ring (40) and said piston core being provided with a further lower bearing-rings (41). 3. Apparatus as claimed in claim 2 said bearing-rings being located in respective grooves (42 and 43).

GB8520887D0 - Piston & cylinder apparatus - …
piston amp cylinder apparatus cylinder apparatus Prior art date 1985-08-21 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 …

Piston-cylinder apparatus - Wikipedia
The piston-cylinder apparatus is a solid media device, used in Geosciences and Material Sciences, for generating simultaneously high pressure (up to 6 GPa) and temperature (up to 1700 °C). Modifications of the normal set-up can push these limits to even higher pressures and temperatures. A particular type of piston-cylinder, called Griggs apparatus, is also able to add a deviatoric stress on ...

Piston Ring - an overview | ScienceDirect Topics
Piston ring hydrodynamic lubrication and friction are significantly affected by the dynamic twist of the ring and the inter-ring gas pressure loading that is influenced by the ring axial motion. The influences of particles on the tribological performance of piston ring packs were …

Piston ring - Wikipedia
A piston ring is a metallic split ring that is attached to the outer diameter of a piston in an internal combustion engine or steam engine.. The main functions of piston rings in engines are: Sealing the combustion chamber so that there is minimal loss of gases to the crank case.; Improving heat transfer from the piston to the cylinder wall. ...

NPR (Nippon Piston Ring) Piston Rings.
Steel piston rings allow for a reduction in the radial wall thickness. This (thinner) and lighter design seals more completely against the ring groove. Also, NPR’s steel ring designs with greater material strength, reduced width and radial wall dimensions conform better to less than perfect cylinder bores.

Rings - CP-Carrillo
Both rings will normally be marked with a dot(.), number, or letter that will aid in determining which side of the ring will face up toward the dome of the piston. If the rings don’t have a dot or letter to mark “up”, check the ID of the ring and they should be beveled.

Piston apparatus - TIMMERMAN; TOM
22-09-1987 · A piston apparatus has a first pair of spaced-apart cylinders aligned along a cylinder axis. There is a pair of pistons, each piston being slidably received in one of the cylinders for reciprocation along the axis. A pair of spaced-apart crank members are on opposite sides of the cylinder axis. The crank members have parallel axes of rotation.

Piston apparatus with oil scraper ring - …
18-05-2006 · 4. The piston apparatus of claim 1, wherein at least one oil hole is provided to the piston below the oil scraper ring to discharge an oil scraped by the upper and lower protrusions to an inside of the piston. 5. The piston apparatus of claim 1, wherein the oil scraper ring provides a function of the oil ring.