US3744678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass or bulk forming dispenser cap for pressure cans
Assignee: SPECIALTY ACQUISITION Corp A CORP OF DELAWARE
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Filing: 1971-06-18
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Granted: 1973-07-10
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Expires: 1991-06-18
Abstract
Abstract A one-piece molded plastic dispenser cap for discharging and collecting foam-producing pressurized substance. The cap comprises a shell-like body having annular concentric inner and outer walls arranged to movably mount the cap on the valvecarrying end closure of a pressurized container for limited axial movement thereon between non-discharging and discharging positions. A hollow boss of the body frictionally fits over the valve stem of the container to provide for actuation of the stem when a discharge is to be effected. The cap body has a concave or recessed transverse top wall which joins together the concentric inner and outer walls and also the hollow boss and which has an opening that communicates with the bore of the boss. Actuation of the cap is effected by placing the palm of the hand over the hollow of the transverse wall, and pressing the cap inward thereby. Vent passages in the form of notches are provided at the periphery of the transverse top wall, to vent air therefrom as the cap is being pressed inward by the palm and as pressurized product from the container is introduced into the hollow of the wall from the valve stem. Such pressurized product is of the foam-producing type which quickly fills the hollow of the wall and thereby forms a relatively large, accessible mass that can thus easily be removed. The product mass, for example, can contain ingredients which result in a hot foam-type shaving lather, or other end products can be had to serve various purposes where a foam-type mass has utility.
Inventors
- 👤 S Beres
- 👤 W Steiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:27
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/28; B65D83/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
214 words
A mass-forming dispenser cap for discharging and collecting a foam-producing, pressurized substance, comprising in combination: a. a shell-like body having an annular outer wall with a bottom rim adapted to engage the peripheral shoulder portions of a pressurized container, b. said body having bearing portions disposed within the annular outer wall and engageable with cooperable surfaces of a valve-carrying end closure of the container, for supporting the body for limited axial movement thereon, c. said body having a central hollow boss located inwardly of the bearing portions to receive and frictionally seize the projecting end of a depressible hollow valve stem on the closure, thereby to effect depressing product-discharging movement of the stem when downward force is applied to the body, d. said body having a recessed, expansive transverse top wall joining together the annular outer wall, the said bearing portions and the central boss, e. the bore of the central boss communicating with the hollow of the top wall whereby pressurized product which is being discharged through the valve stem is deposited in said hollow of the wall and collected thereby, f. said body having a plurality of vent passages at the periphery of the transverse top wall to vent air as the hollow of the wall fills with the said discharging product.
Claim 2
Dependent Claim
214 words
A mass-forming dispenser cap for discharging and collecting a foam-producing, pressurized substance, comprising in combination: a. a shell-like body having an annular outer wall with a bottom rim adapted to engage the peripheral shoulder portions of a pressurized container, b. said body having bearing portions disposed within the annular outer wall and engageable with cooperable surfaces of a valve-carrying end closure of the container, for supporting the body for limited axial movement thereon, c. said body having a central hollow boss located inwardly of the bearing portions to receive and frictionally seize the projecting end of a depressible hollow valve stem on the closure, thereby to effect depressing product-discharging movement of the stem when downward force is applied to the body, d. said body having a recessed, expansive transverse top wall joining together the annular outer wall, the said bearing portions and the central boss, e. the bore of the central boss communicating with the hollow of the top wall whereby pressurized product which is being discharged through the valve stem is deposited in said hollow of the wall and collected thereby, f. said body having a plurality of vent passages at the periphery of the transverse top wall to vent air as the hollow of the wall fills with the said discharging product.
Claim 3
Dependent Claim
17 words
A dispenser cap as in claim 1, wherein: a. the transverse top wall has a concavo-convex configuration.
Claim 4
Dependent Claim
66 words
A dispenser cap as in claim 1, wherein: a. the hollow top wall has a passage of smaller diameter than and coaxial with the bore of the central boss, which provides the communication between said bore and the hollow of the wall, b. said passage diameter being of the same order of magnitude as the bore in the valve stem which is receivable in the boss.
Claim 5
Dependent Claim
224 words
A mass-forming dispenser cap for discharging and collecting a foam-producing, pressurized substance, comprising in combination: a. a shell-like body having an annular outer wall with a bottom rim adapted to engage the peripheral shoulder portions of a pressurized container, b. said body having bearing portions disposed within the annular outer wall and engageable with cooperable surfaces of a valve-carrying end closure of the container, for supporting the body for limited axial movement thereon, c. said body having a central hollow boss located inwardly of the bearing portions to receive and frictionally seize the projecting end of a depressible hollow valve stem on the closure, thereby to effect depressing product-discharging movement of the stem when downward force is applied to the body, d. said body having a recessed, expansive transverse top wall joining together the annular outer wall, the said bearing portions and the central boss, e. the bore of the central boss communicating with the hollow of the top wall whereby pressurized product which is being discharged through the valve stem is deposited in said hollow of the wall and collected thereby, f. said body having vent passages at the periphery of the transverse top wall to vent air as the hollow of the wall fills with the said discharging product, g. said vent passages comprising notches in the periphery of the top wall.
Claim 6
Dependent Claim
224 words
A mass-forming dispenser cap for discharging and collecting a foam-producing, pressurized substance, comprising in combination: a. a shell-like body having an annular outer wall with a bottom rim adapted to engage the peripheral shoulder portions of a pressurized container, b. said body having bearing portions disposed within the annular outer wall and engageable with cooperable surfaces of a valve-carrying end closure of the container, for supporting the body for limited axial movement thereon, c. said body having a central hollow boss located inwardly of the bearing portions to receive and frictionally seize the projecting end of a depressible hollow valve stem on the closure, thereby to effect depressing product-discharging movement of the stem when downward force is applied to the body, d. said body having a recessed, expansive transverse top wall joining together the annular outer wall, the said bearing portions and the central boss, e. the bore of the central boss communicating with the hollow of the top wall whereby pressurized product which is being discharged through the valve stem is deposited in said hollow of the wall and collected thereby, f. said body having vent passages at the periphery of the transverse top wall to vent air as the hollow of the wall fills with the said discharging product, g. said vent passages comprising notches in the periphery of the top wall.
Claim 7
Dependent Claim
255 words
A mass-forming dispenser cap for discharging and collecting a foam-producing, pressurized substance, comprising in combination: a. a shell-like body having an annular outer wall with a bottom rim adapted to engage the peripheral shoulder portions of a pressurized container, b. said body having bearing portions disposed within the annular outer wall and engageable with cooperable surfaces of a valve-carrying end closure of the container, for supporting the body for limited axial movement thereon, c. said body having a central hollow boss located inwardly of the bearing portions to receive and frictionally seize the projecting end of a depressible hollow valve stem on the closure, thereby to effect depressing product-discharging movement of the stem when downward force is applied to the body, d. said body having a recessed, expansive transverse top wall joining together the annular outer wall, the said bearing portions and the central boss, e. the bore of the central boss communicating with the hollow of the top wall whereby pressurized product which is being discharged through the valve stem is deposited in said hollow of the wall and collected thereby, f. said body having vent passages at the periphery of the transverse top wall to vent air as the hollow of the wall fills with the said discharging product, g. the bearing portions of the body comprising an annular inner wall concentrically disposed within said annular outer wall, h. said inner wall having a plurality of cuts to enable it to yield when in engagement with the cooperable surfaces of the end closure.
Claim 8
Dependent Claim
255 words
A mass-forming dispenser cap for discharging and collecting a foam-producing, pressurized substance, comprising in combination: a. a shell-like body having an annular outer wall with a bottom rim adapted to engage the peripheral shoulder portions of a pressurized container, b. said body having bearing portions disposed within the annular outer wall and engageable with cooperable surfaces of a valve-carrying end closure of the container, for supporting the body for limited axial movement thereon, c. said body having a central hollow boss located inwardly of the bearing portions to receive and frictionally seize the projecting end of a depressible hollow valve stem on the closure, thereby to effect depressing product-discharging movement of the stem when downward force is applied to the body, d. said body having a recessed, expansive transverse top wall joining together the annular outer wall, the said bearing portions and the central boss, e. the bore of the central boss communicating with the hollow of the top wall whereby pressurized product which is being discharged through the valve stem is deposited in said hollow of the wall and collected thereby, f. said body having vent passages at the periphery of the transverse top wall to vent air as the hollow of the wall fills with the said discharging product, g. the bearing portions of the body comprising an annular inner wall concentrically disposed within said annular outer wall, h. said inner wall having a plurality of cuts to enable it to yield when in engagement with the cooperable surfaces of the end closure.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |