U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5926874

Automatic Bed Maker

An automatic bed maker which uses the expansion of inflatable bladder to straighten, align, and tuck-in bed-cover assembly.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 451/19 - Hydraulically driven


Subclass of Class 451 - Abrading
Definition: Subject matter actuated by fluid pressure means.
No. of patents: 9
Last issue date: 03/30/2004


NumberTitleIssue Date
6712670Method and apparatus for applying downward force on wafer during CMP
An apparatus for applying a wafer to a polishing belt during a CMP operation includes a spindle having an upper end and a lower end. A wafer carrier is coupled to the lower end of the spindle. A linear force generator is disposed at the upper end of the spindle. A l...
03/30/2004
6358114Method and apparatus for optical polishing
A lapping tool for localized optical polishing of a workpiece, the tool having a flexible working surface and being characterized by means for selectively varying the pressure applied, in use, on the workpiece by different regions of the tool working surf...
03/19/2002
6152804Grinding method and grinding apparatus
A work W is rotated on a lower grinding wheel 13 provided on a work support base 11. Both surfaces of the work W are simultaneously subjected to grinding process by an upper grinding wheel 24 provided on a grinding shaft 22 of a grinding head 21 and the l...
11/28/2000
6001005Polishing apparatus
A polishing machine includes a platform assembly mounted within three support columns. The platform assembly includes fluidically pressurized bladders for urging the upper polish plate toward and away from the lower polish plate. In one embodiment a movab...
12/14/1999
5641321Elongated cutting tool for wood working and apparatus for and method of grinding the same
The invention provides a novel cutting tool used in wood working, which has a sufficiently thick cutting edge allowing stable cutting of a veneer from a log as well as an apparatus for and a method of grinding the cutting edge to have a favorable shape an...
06/24/1997
4860500Passive actuator to maintain a constant normal cutting force during robotic deburring
Precision control over the cutting force during robotic deburring and edge contouring is obtained by use of a "zero spring rate" driver. The driver consists of an air cylinder with a low friction piston. An accumulator is used in between an air supply lin...
08/29/1989
4807501Cutting tool having positioning means
A tailstock body of a numerically controlled lathe is positioned by a hydraulic rotary motor at a desired position to have a quill center of the tailstock body engage one end of a part or workpiece. The positioning of the tailstock body is by a programmab...
02/28/1989
4173847Feeding device for a chip removing tool for machining bores in workpieces, especially a honing tool
A feeding device, especially for a honing tool, in which a frame is formed with a cylinder having a piston mounted therein and to which is connected a spindle or feed rod having the tools mounted thereon. The piston will effect rapid advance and retractio...
11/13/1979
4074416Mirror and method of making same
A mirror, and method of making same, is disclosed. The mirror includes a metallic base material having a low coefficient of thermal expansion, an intermediate layer bonded to the base by a plasma spray process and a reflecting surface overlying the interm...
02/21/1978
 
Sign InRegister
Username  
Password   
forgot password?