Claims
- 1. A filter punch which comprises a punch section having a thickness and two opposing surfaces,
- a filter piercing member secured to and extending from one of said opposing surfaces, said one of said opposing surfaces comprising a flat surface, said filter piercing member having a sharp point and having a side area and a vertical axis, said side area and said vertical axis forming a small angle such that a filter pierced by said piercing member is secured to said piercing member and
- a punch guide comprising a depression formed in the second of said opposing surfaces, said punch section, piercing member and guide having a size and shape to permit said filter punch to pass through a filter section having substantially the same size and shape of said one of said opposing surfaces.
- 2. The filter punch claim 1 wherein said filter piercing member is conically shaped.
- 3. The filter punch of any one of claims 1 or 2 wherein said piercing member has said small angle between about 5.degree. and 30.degree..
- 4. The filter punch of claim 1 wherein said filter piercing member is secured to one of said opposing surfaces by means of a cylindrical member.
- 5. The filter punch of claim 4 wherein said cylindrical member has a cross-section smaller than a base of said filter piercing member.
- 6. A filter punch holder which comprises;
- a base member,
- a plurality of arms attached to said base member, said arms being positioned substantially parallel to each other,
- each of said arms having a plurality of filter punches secured along the length of said arms, said filter punches being positioned substantially equidistant from each other,
- each of said filter punches comprising apunch section having a thickness and two opposing surfaces,
- a filter piercing member secured to and extending from one of said opposing surfaces, said one of said opposing surfaces comprising a flat surface, said filter piercing member having a shape point and having a side area and a vertical axis, said side area and said vertical axis forming a small angle such that a filter pierced by said piercing member is secured to said piercing member,
- and a punch guide comprising a depression in the second of said opposing surfaces,
- said punch section, piercing member and arm having a size and shape to permit said filter punches to pass through a filter section having substantially the same size and shape of said one of said opposing surfaces.
- 7. The filter punch holder of claim 6 which is formed of unitary construction.
- 8. The filter punch holder of claims 6 wherein said filter piercing member is conically shaped.
- 9. The filter punch holder of any one of claim 6, 7 or 8 wherein said piercing member has small angle between about 5.degree. and 30.degree..
Parent Case Info
This is a continuation of copending application Ser. No. 07/169,523, filed on Mar. 17, 1988, now U.S. Pat. No. 4,974,462.
US Referenced Citations (5)
Continuations (1)
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Number |
Date |
Country |
Parent |
169523 |
Mar 1988 |
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