US3915577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensers
Assignee: Richardson Vicks Inc
•
Filing: 1974-07-22
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Granted: 1975-10-28
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Expires: 1994-07-22
Abstract
Abstract The invention relates to dispensers for liquids, particularly dispensers for dispensing liquid to a brush held by the dispenser for cleaning dentures. A metering arrangement for the liquid is provided in which the liquid flows through channels in the outer surface of a metering plug, between the metering plug and the metering chamber and the metering chamber includes a recess at the upstream end of the channels so that any flash from moulding of the plug will not block the channels.
Inventors
- 👤 Rupert James Cropton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:00
CPC Classifications
A; A46; A46B; A46B11/00; A46B11/001; A46B11/002; A46B11/0041
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
244 words
A liquid dispenser including a neck, the neck being closed by a piercible diaphragm, a brush holder being mounted between the neck and a cap, the cap engaged to the neck, the brush holder extending from the cap, the brush holder having a lower wall which includes an inner surface to define a metering chamber, said wall terminating at one end of the holder, a metering plug arranged generally across the metering chamber, the plug having an upstream end and a downstream end, the upstream end lying in the same plane as the one end of the holder, the outer peripheral surface of the plug including at least a first channel, the channel and the inner surface of the chamber defining a metering bore having an upstream end at the one end of the holder such that metered liquid can only pass through the first channel and the wall of the metering chamber, the wall of the chamber including a recess at the one end of the holder and in communication with and adjacent to the upstream end of the channel; spigot means on the metering plug to space the metering plug in the metering chamber to ensure that the upstream end of the channel and the one end of the holder remain in the same plane and to define a reservoir in communication with the first channel, and a second channel in communication with the reservoir and the base of the brush holder.
Claim 2
Dependent Claim
244 words
A liquid dispenser including a neck, the neck being closed by a piercible diaphragm, a brush holder being mounted between the neck and a cap, the cap engaged to the neck, the brush holder extending from the cap, the brush holder having a lower wall which includes an inner surface to define a metering chamber, said wall terminating at one end of the holder, a metering plug arranged generally across the metering chamber, the plug having an upstream end and a downstream end, the upstream end lying in the same plane as the one end of the holder, the outer peripheral surface of the plug including at least a first channel, the channel and the inner surface of the chamber defining a metering bore having an upstream end at the one end of the holder such that metered liquid can only pass through the first channel and the wall of the metering chamber, the wall of the chamber including a recess at the one end of the holder and in communication with and adjacent to the upstream end of the channel; spigot means on the metering plug to space the metering plug in the metering chamber to ensure that the upstream end of the channel and the one end of the holder remain in the same plane and to define a reservoir in communication with the first channel, and a second channel in communication with the reservoir and the base of the brush holder.
Claim 3
Dependent Claim
18 words
In or for a dispenser as claimed in claim 1 in which the recess comprises an annular chamber.
Claim 4
Dependent Claim
19 words
In or for a dispenser as claimed in claim 1 in which the plug is of a plastics material.
Claim 5
Dependent Claim
19 words
In or for a dispenser as claimed in claim 1 in which the housing is of a plastics material.
Claim 6
Dependent Claim
22 words
In or for a dispenser as claimed in claim 1 in which the housing forms part of the nozzle of a bottle.
Claim 7
Dependent Claim
17 words
In or for a dispenser as claimed in claim 1 in which the nozzle includes a brush.
Claim 8
Dependent Claim
38 words
In or for a dispenser as claimed in claim 1 in which the metering plug includes spacer means to accurately space the plug so that the recess is situated adjacent the upstream end of the or each channel.
Claim 9
Dependent Claim
25 words
In or for a dispenser as claimed in claim 7 in which the spacer comprises a spigot extending to the opposite wall of the housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |