Packing for impression material for dental use

{
  "publication_number": "US4023675A",
  "country": "US",
  "kind": "A",
  "title": "Packing for impression material for dental use",
  "abstract": "Packing for impression material for dental use, comprising a container of flexible material divided into two compartments, wherein for the separation of the compartments the walls thereof are locally compressed by a clamping member, wherein the clamping member is adapted to receive the compressed container wall portions according to a labyrinth path.",
  "claims": [
    "1. A packing container for dental impression material which container comprises in combination, a container portion having walls formed of flexible material and having a restricted area defining two compartments, a clamping means having a passage disposed to encircle the restricted area and having separate means oppositely disposed relative a perpendicular plane through said passage for convolutely clamping the wall portions of the container.",
    "2. The packing container of claim 1 wherein the said separate means comprises at least two, oppositely oriented, successive, loop-shaped path sections.",
    "3. The packing container of claim 1 wherein the clamping means has the passage for the container wall at its center, and the oppositely directed folding means projecting from the passage for receiving folded-back container portions under clamping action.",
    "4. The packing container of claim 3 wherein the clamping means is formed of sheet-like material.",
    "5. The packing container of claim 3 wherein the clamping means is formed of flexible material.",
    "6. The packing container of claim 1 wherein the clamping means has two parts which are lockable with respect to one another and which form each individually or jointly a substantially prismatic body between which parts the restricted area of the container is received clampingly.",
    "7. The packing container of claim 6 wherein at least one of the two mutually lockable parts is provided with a handle-like extension.",
    "8. The packing container of claim 7 wherein the extension is a spatula.",
    "9. The packing container of claim 6 wherein the clamping means comprises two clamping halves which interconnect at one end by a hinge and at the other end by a locking member.",
    "10. The packing container of claim 9 wherein facing surfaces of the clamping halves include longitudinally extending, engaging ribs and grooves, said ribs and grooves being conical in configuration.",
    "11. The packing container of claim 10 wherein at least one rib and one corresponding groove are disposed at the center of the facing surfaces.",
    "12. The packing container of claim 9 wherein the locking member is formed by an annular gripping piece, the inner wall of which is slightly conical.",
    "13. The packing container of claim 6 wherein the clamping member comprises two mutually rotatable, substantially concentric elements having slots for receiving the container walls.",
    "14. The packing container of claim 13 wherein the outer wall of the inner portion and the inner wall of the outer portion are provided with one or more raised portions and mating recesses which cooperate snappingly.",
    "15. The packing container of claim 1 having means adapted to be placed in a shaker.",
    "16. The packing container of claim 15 wherein the said means include apertures disposed along an edge portion of the packing container."
  ],
  "cpc": [
    "A61C 9/00",
    "B65D 81/3266",
    "Y10S 366/602"
  ],
  "assignees": [
    "CLAASEN ANTONIUS BERNARDUS"
  ],
  "filing_date": "1976-01-23",
  "publication_date": "1977-05-17",
  "grant_date": "1977-05-17",
  "priority_date": "1975-01-29",
  "application_number": "US-65181276-A",
  "family_id": "26645080",
  "citations": [
    "US3462070A",
    "US3741381A"
  ]
}