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Plug connection for jaw stump models

Imported: 24 Feb '17 | Published: 06 Jan '04

Norbert Rabenstein, Wilfried Hentschel, Egbert Kremer, Ulrich Birkholz

USPTO - Utility Patents

Abstract

A plug connection for jaw stump models for the releasable connection of tooth crown segments or jaw segments to a model base, which includes a plug pin (

1) which can be connected in snap-lock fashion with a sleeve (

12). A non-rotationally symmetric design of a rotational locking section (

4), and a cross pin (

7) arranged perpendicular to the plug pin axis, prevent rotary movement of the plug pin (

1) in the sleeve. Disposed at the end of the plug pin (

1) facing the sleeve is a spring element (

8), which is provided with a circumferential annular groove (

11) for a snap-locking connection with the sleeve. The spring element (

8) comprises two spring tongues (

10) separated by a continuous longitudinal slot (

9). The sleeve provided for receiving the plug pin (

1) comprises a projection projecting into the inner chamber for the snap-lock connection of the plug pin (

1) with the sleeve as well as a sleeve opening region matching the rotational locking section (

4) of the plug pin (

1).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further understood with reference to the accompanying drawings, wherein:

FIG. 1 is a side view of a plug pin;

FIG. 2 is a plan view in the direction II of the plug pin illustrated in FIG. 1;

FIG. 3 is a section through a sleeve;

FIG. 4 is a front view in the direction IV of the sleeve illustrated in FIG. 3;

FIG. 5 is a side view in the direction V of the plug pin illustrated in FIG. 1;

FIG. 6 is a side view in the direction VI of the sleeve illustrated in section in FIG. 4;

FIG. 7 is a side view of a differently designed plug pin;

FIG. 8 is a plan view in the direction VIII of the plug pin illustrated in FIG. 7;

FIG. 9 is a section through a sleeve matching the plug pin shown in FIG. 7;

FIG. 10 is a front view in the direction X of the sleeve illustrated in FIG. 9;

FIG. 11 is a side view in the direction XI of the plug pin illustrated in FIG. 7;

FIG. 12 is a side view in the direction XII of the sleeve illustrated in FIG. 9;

FIG. 13 is a side view of a further differently designed plug pin;

FIG. 14 is a plan view in the direction XIV of the plug pin illustrated in FIG. 13;

FIG. 15 is a section through a sleeve matching the plug pin illustrated in FIG. 13; and

FIG. 16 is a section taken along line XVI—XVI of the sleeve illustrated in FIG.

15.

Claims

1. A plug connection, for releasably securing a model to a model base, comprising:

2. The plug connection according to claim 1, wherein the spring element comprises a substantially cylindrical base element, which is divided into a plurality of spring tongues by at least one longitudinal slot.

3. The plug connection according to claim 1, wherein the spring element is provided with a circumferential, annular groove for connecting in snap-lock fashion with a matching projection of an inner chamber of the sleeve.

4. The plug connection according to claim 3, wherein the matching projection comprises an annular circumferential constriction.

5. The plug connection according to claim 1, wherein:

6. The plug connection according to claim 1, wherein the means for preventing rotary movement of the plug pin in the sleeve comprises a substantially cylindrical base forming a rotationally asymmetric locking section, which projects radially in part and engages in a region of a sleeve opening having a matching inner chamber of the sleeve.

7. The plug connection according to claim 6, wherein the rotational locking section comprises a radially projecting, substantially cylindrical base form with at least one flattened section extending parallel to the plug pin axis, and wherein a sleeve opening of the sleeve comprises a matching, inwardly projecting projection.

8. The plug connection according to claim 6, wherein the rotational locking section exhibits a polygonal cross sectional opening, and wherein the sleeve comprises a matching inner chamber in the sleeve opening.

9. The plug connection according to claim 1, wherein a diameter of the spring element is no larger than an internal diameter of a sleeve opening.

10. The plug connection according to claim 1, wherein the plug pin and the sleeve comprise at least one member selected from the group consisting of a metal, a ceramic material and a plastics material.

11. A plug connection, for releasably securing a model to a model base, comprising:

12. The plug connection according to claim 11, wherein a maximum penetration depth of the plug pin in the sleeve is limited by an abutment provided on the cylindrical shaft of the plug pin.

13. The plug connection according to claim 11, wherein the spring element is provided with a circumferential, annular groove for connecting in snap-lock fashion with a matching projection of an inner chamber of the sleeve.

14. The plug connection according to claim 13, wherein the matching projection comprises an annular circumferential constriction.

15. The plug connection according to claim 11, wherein:

16. The plug connection according to claim 15, wherein the rotationally asymmetric locking section comprises a substantially cylindrical base form having at least one flattened section extending parallel to an axis of the plug pin.

17. The plug connection according to claim 15, wherein the rotationally asymmetric locking section exhibits a polygonal cross sectional opening.

18. The plug connection according to claim 11, wherein the plug pin and the sleeve comprise at least one member selected from the group consisting of a metal, a ceramic material and a plastics material.

19. A plug connection, comprising:

20. The plug connection according to claim 19, wherein the spring element is provided with at least one continuous longitudinal slot which defines at least two spring tongues.

21. The plug connection according to claim 19, wherein a maximum penetration depth of the plug pin in the sleeve is limited by an abutment provided on the cylindrical shaft of the plug pin.

22. The plug connection according to claim 19, wherein:

23. The plug connection according to claim 19, wherein the the plug pin and the sleeve each comprise at least one member selected from the group consisting of a metal, a ceramic material and a plastics material.

24. A plug connection, comprising:

25. The plug connection according to claim 24, wherein a maximum penetration depth of the plug pin in the sleeve is limited by an abutment provided on the cylindrical shaft of the plug pin.

26. The plug connection according to claim 24, wherein the the plug pin and the sleeve each comprise at least one member selected from the group consisting of a metal, a ceramic material and a plastics material.

27. A plug connection, comprising:

28. The plug connection according to claim 27, wherein a maximum penetration depth of the plug pin in the sleeve is limited by a radial circumferential projection which divides the shaft from the rotational locking section.

29. The plug connection according to claim 27, wherein the the plug pin and the sleeve each comprise at least one member selected from the group consisting of a metal, a ceramic material and a plastics material.

30. A plug connection, for releasably securing a model to a model base, comprising:

31. A plug connection, for releasably securing a model to a model base, comprising:

32. A plug connection, for releasably securing a model to a model base, comprising:

33. A plug connection, for releasably securing a model to a model base, comprising:

34. A plug connection, for releasably securing a model to a model base, comprising:

35. A plug connection, for releasably securing a model to a model base, comprising:

36. A plug connection, for releasably securing a model to a model base, comprising:

37. A plug connection, comprising: