Asymmetrical button insert for rock drilling

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Information

Patent Grant
D371374

References
Source

Patent Number
D371,374
Date Filed
Wednesday, April 12, 1995
29 years ago
Date Issued
Tuesday, July 2, 1996
28 years ago

Inventors
Original Assignees
- Sandvik AB
Examiners
- Davis; Antoine Duval
Agents
- Burns, Doane, Swecker & Mathis

US Classifications
- D15 - Machines not elsewhere specified
Field of Search
- US
- D15 139
- 175 371
- 175 292
- 175 389
- 175 396
- 175 398
- 175 425-433
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for an asymmetrical button insert for rock drilling, as shown.

US Referenced Citations (7)

Number	Name	Date	Kind
D357485	Mattsson et al.	Apr 1995
D357486	Mattsson et al.	Apr 1995
4359335	Garnec	Nov 1982
4722405	Langford, Jr.	Feb 1988
5172777	Siracki et al.	Dec 1992
5172779	Siracki et al.	Dec 1992
5421424	Portwood et al.	Jun 1995