Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 5322304 - Tool holder-spindle connection
US Patent Issued on June 21, 1994
Estimated Patent Expiration Date:
April 15, 2013Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
April 15, 2013Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA tool holder assembly for connecting a tool to a spindle. The tool holder assembly defines a conical envelope for seating in a conical seat defined by the spindle and an annular clamping surface in surrounding relation to the conical envelope for seating against an annular clamping surface defined by the spindle. The conical envelope is resilient so as to allow simultaneous seating of the conical envelope in the conical seat of the spindle and seating of the clamping surface on the clamping seat of the spindle irrespective of the tolerances between the conical seat and the clamping seat. Several embodiments are disclosed for providing the resiliency to the conical envelope.Other References
| InventorAssigneeApplicationNo. 046957 filed on 04/15/1993US Classes:279/103, Drill type409/234With cutter holderField of Search279/9.1, SOCKET TYPE279/102, Friction grip279/103, Drill type279/158, MISCELLANEOUS408/239R, With tool-retaining means408/239A, Tool adapter408/240, Clamping jaws408/238, TOOL-SUPPORT409/232, With cutter holder409/234With cutter holderExaminersPrimary: Bishop, Steven C.Attorney, Agent or FirmUS Patent References4621960, Multiple-part holding arrangement, in particular for concentrically rotating toolsIssued on: 11/11/1986 Inventor: Tollner4714389, Tool holder Issued on: 12/22/1987 Inventor: Johne4726721, Tool coupling Issued on: 02/23/1988 Inventor: Heel , et al.4840520, Mounting device having a conical shank Issued on: 06/20/1989 Inventor: Pfalzgraf5201621Shank for a tool Issued on: 04/13/1993 Inventor: McMurtry, et al. Foreign Patent References
International ClassB23B 031/117 |
