Machine Tools

	PAT. NO.	Title
151	4,539,500	Commutator motor and improved brush construction for use in portable machine tools
152	4,533,823	Coding systems for elements of machine tools, particularly of the numerically controlled type
153	4,523,632	Cooling system of rotary fluid pressure cylinder for chucking in machine tools
154	4,503,725	Bracing device for machine tools
155	4,493,041	Method and apparatus for determining the working range of a double-acting clamping cylinder for actuating chucking devices on machine tools
156	4,478,009	Automatic control system for machine tools
157	4,471,529	Measuring head for measuring equipment, multi-coordinate measuring instruments, and machine tools
158	4,456,960	Method and device for detecting tool abnormality in machine tools
159	4,446,408	Control circuit for machine tools
160	4,445,182	Method of control of NC machine tools
161	4,444,061	Force and torque sensor for machine tools
162	4,442,725	Shock absorbing apparatus for travelling a table or tool rest in machine tools
163	4,442,576	Tool cooling device for machine tools
164	4,433,383	Installation comprising a plurality of numerically controlled machine tools
165	4,419,806	Tool changing device on machine tools, particularly on horizontal boring and milling machines
166	4,404,729	Multi-spindle machine tools
167	RE31,247	Diagnostic communications system for computer controlled machine tools
168	4,379,667	Chuck for machine tools
169	4,361,836	Safety device at remote control of hydraulic or pneumatic machine tools
170	4,360,878	Method for the library storage of a workpiece program for numerically controlled machine tools
171	4,360,807	Device for remote control of hydraulic or pneumatic machine tools
172	4,355,390	Method for checking data written into buffered write-read memories in numerically controlled machine tools
173	4,354,305	Contouring and threading attachment for multi-function machine tools
174	4,354,251	Device for testing programs for numerical control of machine tools
175	4,339,962	Switching device for variable speed gears in machine tools
176	4,339,749	Abnormal condition sensing monitor system for use with machine tools
177	4,337,385	Orbital tool support system for EDM machines and other machine tools
178	4,335,633	Tailstock for machine tools, in particular lathes or the like with electric actuator having a monitored thrust
179	4,334,362	Bidimensional tracer of machine tools or measuring machines
180	4,331,020	Dimension indicator for sheet-metal folding or shearing machine tools
181	4,319,103	Protective encasement for machine tools
182	4,317,394	Arrangement for loading and unloading workpieces of machine tools
183	4,302,144	Work changing mechanism for machine tools
184	4,301,581	Method and apparatus for the production of turned workpieces on multi-station machine tools
185	4,295,146	Device for moving automatic drawing machine tools
186	4,268,786	Position pickup for numerically controlled machine tools
187	4,260,307	Work table for machine tools
188	4,251,957	Workpiece transfer apparatus for a plurality of machine tools
189	4,237,598	Manufacturing processes using machine tools
190	4,209,910	Auxiliary device for vertical turning and boring machine tools
191	4,168,464	Set point sensing system for numerically controlled machine tools
192	4,151,759	Indexing table, in particular a turret head, for machine tools
193	4,122,379	Analogue control device for abutment-free stroke limitation of machine tools
194	4,117,762	Machine tools with sliding tool-holding ram
195	4,105,899	Safety mat switch for machine tools and their like
196	4,100,597	Computer controlled distribution apparatus for distributing transactions to and from controlled machine tools having means independent of the computer for completing or stopping a tool function initiated by a computer transaction
197	4,096,384	Position transducer for machine tools and measuring machines
198	4,090,240	Method and aid for preparing NC control programs for machine tools
199	4,078,195	Adaptive control system for numerically controlled machine tools
200	4,073,215	Sub plate assembly for machine tools

1	Device for receiving and separating chips created by machine-tools and coolant (sealant)
2	Device for and method of preventing accidents in hand-operated machine tools due to tool jamming
3	Feedback controller for NC controlled machine tools
4	Commutator motor and improved brush construction for use in portable machine tools
5	Graphite fiber reinforced structure for supporting machine tools