F01B7/04 - CPC Classification Index

ClassID:

136419 ⎘

F01B7/04 - CPC Classification

Classification description:

Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on same main shaft

Sub-classes:

F01B7/06 » using only connecting-rods for conversion of reciprocatory into rotary motion or vice-versa 3
F01B7/12 » using rockers and connecting-rods 17

Recent Application in this class:

20200325916

2020-10-15

DRIVE-TORQUE AMPLIFIER FOR A MOVING SHAFT

20190186899

2019-06-20

Systems and methods for measurement of piston-to-piston clearances in multi-cylinder opposed piston engines

20160252012

2016-09-01

Internal combustion engines

20150027418

2015-01-29

Internal combustion engines

20120234291

2012-09-20

OPPOSITE RADIAL ROTARY-PISTON ENGINE OF CHORONSKI - MODIFICATION

20120192829

2012-08-02

CRANKLESS ENGINE

20120180650

2012-07-19

Axial piston machines

20120103300

2012-05-03

Internal combustion engine

20110186017

2011-08-04

Single-crankshaft, opposed-piston engine constructions

#10

20110186005

2011-08-04

Rolling thrust bearing constructions

#11

20110061631

2011-03-17

Engine with a variable volume chamber

#12

20100192923

2010-08-05

Internal combustion engines

#13

20090314251

2009-12-24

Opposite radial rotary-piston engine of choronski-modification

#14

20090016917

2009-01-15

Compact dual rocking piston pump with reduced number of parts

#15

20060180015

2006-08-17

Piston mechanism with diverging pistons

#16

17586888

2023-04-11

Internal restraining path in a rotor