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Class Information
Number: 279/19.4
Name: Chucks or sockets > Socket type > Lost motion > Spreading elements
Description: Devices in which two or more elements are mounted for motion away from each other to release a tool from the socket and for motion toward each other to retain a tool in the socket.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7360606 |
Hand machine tool with a removeable tool holder |
Apr. 22, 2008 |
| 6675910 |
Structure of hand tool |
Jan. 13, 2004 |
| 6669206 |
Tool holder for a rotary hammer or chisel hammer |
Dec. 30, 2003 |
| 6659473 |
Chuck for a percussion hand-held power tool |
Dec. 9, 2003 |
| 6651990 |
Tool holder |
Nov. 25, 2003 |
| 6543789 |
Chuck for a boring tool |
Apr. 8, 2003 |
| 6536780 |
Hand power tool |
Mar. 25, 2003 |
| 6497418 |
Tool-bit holding device in percussion tool |
Dec. 24, 2002 |
| 6464234 |
Machine tool, especially a hammer drill or chisel |
Oct. 15, 2002 |
| 6202760 |
Structure of multi-functional hand tool |
Mar. 20, 2001 |
| 6179300 |
Tool holder |
Jan. 30, 2001 |
| 6174112 |
Tool for hand-held equipment |
Jan. 16, 2001 |
| 6135461 |
Chuck for drilling and chiseling tools |
Oct. 24, 2000 |
| 6109620 |
Shank adapter |
Aug. 29, 2000 |
| 6092814 |
Tool holder for inserted tools in drilling and/or hammering machines |
Jul. 25, 2000 |
| 6089798 |
Device for coupling a tool to a hand-held tool-driving device |
Jul. 18, 2000 |
| 5896934 |
Reciprocating tool having a piston retainer |
Apr. 27, 1999 |
| 5807040 |
Tool bit chuck |
Sep. 15, 1998 |
| 5709391 |
Bit mounting device |
Jan. 20, 1998 |
| 5700018 |
Tool bit chuck |
Dec. 23, 1997 |
| 5505570 |
Device on hand power tool for driving tools |
Apr. 9, 1996 |
| 5466101 |
Device on hand power tools for driving tools |
Nov. 14, 1995 |
| 5326199 |
Tool bit and tool bit chuck for manually operated tools |
Jul. 5, 1994 |
| 5286145 |
Tool bit and tool bit chuck for percussion drilling |
Feb. 15, 1994 |
| 5171030 |
Self-tightening drill chuck |
Dec. 15, 1992 |
| 4878679 |
Variably operable hand-held device |
Nov. 7, 1989 |
| 4844482 |
Drill chuck |
Jul. 4, 1989 |
| 4752165 |
Arrangement for torque transmitting, and tool cooperating therewith |
Jun. 21, 1988 |
| 4726719 |
Drill chuck and tool for rotary drilling and rotary percussion drilling |
Feb. 23, 1988 |
| 4703942 |
Hammer drill |
Nov. 3, 1987 |
| 4702485 |
Percussion drill and chuck arrangement therefor |
Oct. 27, 1987 |
| 4700956 |
Lockable and self-tightening hammer-drill chuck |
Oct. 20, 1987 |
| 4691929 |
Drill bit chuck for drilling and cutting devices |
Sep. 8, 1987 |
| 4658912 |
Percussion drill |
Apr. 21, 1987 |
| 4609199 |
Hammer-drill chuck with adjustable axial play |
Sep. 2, 1986 |
| 4491444 |
Tool holder device |
Jan. 1, 1985 |
| 4434859 |
Hammer drill for performing rotary drilling or percussive drilling |
Mar. 6, 1984 |
| 4231581 |
Pneumatic hammer with twist retainer |
Nov. 4, 1980 |
| 4174113 |
Bit retainer for pneumatic tools |
Nov. 13, 1979 |
| 4071094 |
Portable pneumatic percussive tool |
Jan. 31, 1978 |
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