Wedge for a drill shank of a percussion drilling machine

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Information

Patent Grant
D291087

References
Source

Patent Number
D291,087
Date Filed
Tuesday, December 18, 1984
39 years ago
Date Issued
Tuesday, July 28, 1987
37 years ago

Inventors
- Pekka Salmi
- Timo MUUTTONEN
Original Assignees
- Oy Tampella AB
Examiners
- Bullock; B. J.
Agents
- Ladas & Parry

US Classifications
- D15 - Machines not elsewhere specified
- D08 - Tools and hardware
Field of Search
- US
- D15 138
- D15 139
- D15 143
- D15 21
- 279 19
- 408 239 R
- 408 226
- 173 104
- 173 164
- D08 70
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a wedge for a drill shank of a percussion drilling machine, as shown and described.

Priority Claims (1)

Number	Date	Country	Kind
670/84	Jul 1984	FIX

US Referenced Citations (4)

Number	Name	Date	Kind
D250874	D'Haem	Jan 1979
D282666	Salmi et al.	Feb 1986
3517754	Hughes	Jun 1970
4629375	Lieser	Dec 1986

Foreign Referenced Citations (3)

Number	Date	Country
2306322	Aug 1974	DEX
2613309	Sep 1977	DEX
0018916	Jan 1896	GBX