US3994032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain clearing bellows
Assignee: Lawrence Peska Associates Inc
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Filing: 1975-08-20
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Granted: 1976-11-30
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Expires: 1995-08-20
Abstract
Abstract A collapsable bellows for applying pressure to clear a sink drain is generally an elongated tubular thin-walled rubber or resilient plastic member having a mouth and flange at one end and a closure wall at the other end. The sidewall of the member has a series of accordian pleats along its length, which are formed by alternate frusto-conical and annular wall sections. An integral mushroom-shaped handle projects from the exterior of the closure wall.
Inventors
- 👤 William Paul Spickofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:41
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/30; E03C1/304; E03C1/308
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A drain clearing bellows device comprising: an elongated tubular axially compressible resilient member of generally constant wall thickness; said member having a series of pleats along its length formed by coaxial alternating frusto-conical and continuous annular planar wall sections; each frusto-conical wall section having a large diameter end and a small diameter end; the each continuous annular planar wall section having an inner end and an outer end, said inner end being attached to the small diameter end of a frusto-conical wall section and each outer end being attached to the large diameter end of a preceeding frusto-conical wall section; large diameter end of one of said frusto-conical wall sections being at one end of said member and defining a mouth for encompassing a sink drain opening; a planar flange extending integrally and radially from said mouth for sealing around said sink drain opening; an integral closure portion at the opposite end of said member; and a handle integral with said closure portion extending axially therefrom.
Claim 2
Dependent Claim
166 words
A drain clearing bellows device comprising: an elongated tubular axially compressible resilient member of generally constant wall thickness; said member having a series of pleats along its length formed by coaxial alternating frusto-conical and continuous annular planar wall sections; each frusto-conical wall section having a large diameter end and a small diameter end; the each continuous annular planar wall section having an inner end and an outer end, said inner end being attached to the small diameter end of a frusto-conical wall section and each outer end being attached to the large diameter end of a preceeding frusto-conical wall section; large diameter end of one of said frusto-conical wall sections being at one end of said member and defining a mouth for encompassing a sink drain opening; a planar flange extending integrally and radially from said mouth for sealing around said sink drain opening; an integral closure portion at the opposite end of said member; and a handle integral with said closure portion extending axially therefrom.
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) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |