Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 405/246
Name: Hydraulic and earth engineering > Foundation > Columnar structure (e.g., pier, pile) > Process or apparatus for installing > Driving removable wall supporting core > Diametrically retractable core
Description: Method or apparatus in which the core is adapted to be readily reduced in diameter to facilitate removal or insertion of the core from or into the hollow shell.










Sub-classes under this class:

Class Number Class Name Patents
405/247 Fluid pressure actuated 6


Patents under this class:

Patent Number Title Of Patent Date Issued
7736095 Pile assembly for engineering and construction works Jun. 15, 2010
6582158 Device and method for transferring vibrating movement to rigid pipe with pipe clamp for vibrator rammer block Jun. 24, 2003
5310287 Method and device for driving a pile or the like into and out of the ground May. 10, 1994
5030034 Soil pollution monitoring system and apparatus Jul. 9, 1991
4701077 Apparatus for withdrawing a tube or pile which has been driven into the soil Oct. 20, 1987
4616958 Retraction assemblies for expansible mandrels Oct. 14, 1986
4074539 Expansible mandrel with an external, cable actuating winch Feb. 21, 1978
4057970 Rotary fluid supply joints for expansible mandrels Nov. 15, 1977
4050731 Shifting apparatus Sep. 27, 1977
4036025 Composite pile having the inside diameter of the tip less than that of the pile and mandrel for driving the same Jul. 19, 1977
4026117 Expansible mandrel May. 31, 1977











 
 
  Recently Added Patents
Knee guard
Color imaging device
Color image display device, color filter substrate, color pixel array substrate, and electronic device
Method and a channel estimating arrangement for performing channel estimation
Semiconductor device and method of manufacturing the same
Multiple carrier compression scheme
Printer driver, printer control method, and recording medium
  Randomly Featured Patents
Switching system for switching cells having error detection apparatus
Acupuncture needle container and dispenser
Ascorbyl-phosphoryl-cholesterol
Method and apparatus for detecting an object within a dynamic scattering media
Banking system controlled responsive to data read from data bearing records
DC-AC converter with feedback signal control circuit utilizing power supply voltage, controller IC therefor, and electronic apparatus utilizing the DC-AC converter
Method and apparatus for enhancing the portability of an object oriented interface among multiple platforms
Emulsion polymerization process for ABS polyblends
Storage device with website trust indication
System and method for synthesizing leads of an electrocardiogram