US4175658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable dental amalgam capsule
Assignee: 3M Co
•
Filing: 1979-02-08
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Granted: 1979-11-27
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Expires: 1999-02-08
Abstract
Abstract A combination storage and mixing capsule capable of containing separately, certain materials, such as those used in dental restorative work, until such time as mixing and use of the composite is desired. The capsule includes two compartments and a valve effective to isolate the compartments when storing and to unite them when mixing. After mixing, a removable cap enclosing the end of one compartment is withdrawn to allow the prepared mixture to be removed.
Inventors
- 👤 Billy G. Moser
- 👤 Otto (Bo) Suter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:18
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; Y; Y10; Y10S; Y10S215/00; Y10S215/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
161 words
A capsular container for storing separate ingredients subsequently to be mixed together within the container, said container comprising: a. a longitudinal hollow cylinder defining a storage and mixing chamber, said cylinder being open at both ends; b. a transverse cylinder, intersecting at right angles and in communication with one open end of said longitudinal cylinder, said transverse cylinder being closed at one end and open at the other end; c. a rotary cylinder including a mercury storage compartment, said rotary cylinder being inserted within said transverse cylinder through said other end, said mercury storage compartment being capable of interfacing with the inner wall of said transverse cylinder in a first angular position of said transverse cylinder and interfacing the open end of said longitudinal cylinder in a second angular position of said transverse cylinder; and, d. a removable cup-shaped cap, capable of sealing the open end of said longitudinal cylinder opposite the end intersecting and in communication with said transverse cylinder.
Claim 2
Dependent Claim
161 words
A capsular container for storing separate ingredients subsequently to be mixed together within the container, said container comprising: a. a longitudinal hollow cylinder defining a storage and mixing chamber, said cylinder being open at both ends; b. a transverse cylinder, intersecting at right angles and in communication with one open end of said longitudinal cylinder, said transverse cylinder being closed at one end and open at the other end; c. a rotary cylinder including a mercury storage compartment, said rotary cylinder being inserted within said transverse cylinder through said other end, said mercury storage compartment being capable of interfacing with the inner wall of said transverse cylinder in a first angular position of said transverse cylinder and interfacing the open end of said longitudinal cylinder in a second angular position of said transverse cylinder; and, d. a removable cup-shaped cap, capable of sealing the open end of said longitudinal cylinder opposite the end intersecting and in communication with said transverse cylinder.
Claim 3
Dependent Claim
66 words
A capsular container as in claim 1 including limit stop means including an arcuate flange protruding from said other end of said transverse cylinder and terminating at opposite ends in a storage limit stop and a mixing limit stop, and a limit stop bar extending laterally from said transverse cylinder, and movable with said rotary cylinder from said first angular position to said second angular position.
Claim 4
Dependent Claim
52 words
A capsular container as in claim 2 including a supporting framework, including two arcuate ribs intersecting at right angles at the approximate center of each respective said arc, said framework being affixed to the exterior wall of said transverse cylinder approximately opposite the intersection of said longitudinal cylinder and said transverse cylinders.
Claim 5
Dependent Claim
21 words
A capsular container as in claim 3 including knurling extending around a portion of the exterior of said removable cup-shaped cap.
References Cited (Backward Citations)
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Cited
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US3860114A
Cited
US3831742A
Cited
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Cited
US4142629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |