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Class Information
Number: 104/10
Name: Railways > Track layers > Tamper
Description: Apparatus and tools for tamping the ballast, cement, or earth around ties.










Sub-classes under this class:

Class Number Class Name Patents
104/12 Car mounted 179
104/13 Hand tools 9
104/11 Pneumatic injector 10


Patents under this class:

Patent Number Title Of Patent Date Issued
8240253 Method and machine for compressing ballast of a rail track Aug. 14, 2012
8025013 Moving platform on rail vehicle Sep. 27, 2011
7762197 Vented hydraulic vibrator assembly Jul. 27, 2010
7726246 Tamping tool Jun. 1, 2010
7527452 Tamping tine for a tamping machine May. 5, 2009
7398735 Bernoulli type, non-contact air-activated lifting and tamping device Jul. 15, 2008
7325496 Tamping tool Feb. 5, 2008
7013812 Tamping tool Mar. 21, 2006
6978718 Tamping device and method of tamping a railroad track's ballast Dec. 27, 2005
6925940 Tamping tine for a tamping unit Aug. 9, 2005
6877931 Tamping tine for a tamping machine Apr. 12, 2005
6865991 Machine and method for tamping a track Mar. 15, 2005
6581524 Conversion device for converting a rotational motion into a reciprocal motion Jun. 24, 2003
6389979 Assembly for tamping ballast May. 21, 2002
6386114 Single shaft tamper with reciprocating rotational output May. 14, 2002
6220170 Method of correcting the position of a railroad track Apr. 24, 2001
6067910 Ballast tamping assembly May. 30, 2000
5809895 Split tool mechanical vibrator Sep. 22, 1998
5730059 Split tool mechanical vibrator Mar. 24, 1998
5591915 System for the continuous measurement of the resistance of a track to transverse displacement Jan. 7, 1997
5261763 Tamping tool Nov. 16, 1993
4996925 Tamping tools Mar. 5, 1991
4922828 Ballast tamping tool May. 8, 1990
4905604 Mobile switch leveling, lining and tamping machine Mar. 6, 1990
4903609 Tamping blade with improved inserts Feb. 27, 1990
4848240 Tool for positioning railway track components and method of manufacture Jul. 18, 1989
4606275 Tamping tools Aug. 19, 1986
4598645 Railway track tamper Jul. 8, 1986
4563953 Tamping head with limiting stop for tool reciprocation Jan. 14, 1986
4501200 Tamping tool retainer Feb. 26, 1985
4488492 Railway track tamping machine Dec. 18, 1984
4476786 Ballast tamping machine Oct. 16, 1984
4315464 Tamper tip for railroad tie tamping machines Feb. 16, 1982
4221169 Track tamper Sep. 9, 1980
4218978 Apparatus for tamping or packing the bed of railway tracks Aug. 26, 1980
4167141 Percussive tool with replaceable work bit Sep. 11, 1979
4160419 Tamping tool Jul. 10, 1979
4134342 Ballast tamping apparatus Jan. 16, 1979
4111129 Method and apparatus for the vibratory tamping of railway tracks Sep. 5, 1978
4096806 Track tamper with hingeable unitary pivotable tamping unit Jun. 27, 1978
4090451 Mobile track tamping machine that tamps three successive cribs May. 23, 1978
4088077 Continuous tamping device May. 9, 1978
4068594 Tamping tool Jan. 17, 1978
4062291 Ballast tamping tool Dec. 13, 1977
3971323 Tamping blade and a hard wear-resistant insert therefor Jul. 27, 1976











 
 
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