Patent US3795924A successfully refreshed from Google Patents.
US3795924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain plugs
Assignee: Individual
•
Filing: 1971-07-16
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Granted: 1974-03-12
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Expires: 1991-07-16
Abstract
Abstract A drain plug, more particularly for a sanitary appliance, having an upper portion and a lower portion capable of being moved towards each other whereby to clamp the wall of the appliance responsively to mere rotation of a threaded ring engaging with a screw-thread formed on said upper portion, said ring being fast with said lower portion but being capable of leaktight rotation without axial displacement with respect thereto.
Inventors
- 👤 A Kempler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:52
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/20; F; F16; F16L; F16L15/00; F16L15/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A drain plug adapted particularly for use in a sanitary appliance, comprising in combination; an upper plug portion adapted to extend through a drain hole in said appliance; an externally threaded lower tube being fastened to and depending from said upper plug portion; a lower plug portion adapted to be positioned below said upper plug portion in coaxial alignment therewith; a seal-compressing ring for tightening said drain plug on said appliance communicating between said upper and lower plug portions, said ring having an internally threaded segment engaging the external thread on said lower tube; and annular means extending between said ring and said lower plug portions for permitting relative rotation while concurrently restraining axial motion between said ring and said lower plug portion whereby rotational movement imparted to said ring for moving the latter along the threaded lower tube is adapted to lockingly engage said upper and lower plug portions.
Claim 2
Dependent Claim
150 words
A drain plug adapted particularly for use in a sanitary appliance, comprising in combination; an upper plug portion adapted to extend through a drain hole in said appliance; an externally threaded lower tube being fastened to and depending from said upper plug portion; a lower plug portion adapted to be positioned below said upper plug portion in coaxial alignment therewith; a seal-compressing ring for tightening said drain plug on said appliance communicating between said upper and lower plug portions, said ring having an internally threaded segment engaging the external thread on said lower tube; and annular means extending between said ring and said lower plug portions for permitting relative rotation while concurrently restraining axial motion between said ring and said lower plug portion whereby rotational movement imparted to said ring for moving the latter along the threaded lower tube is adapted to lockingly engage said upper and lower plug portions.
Claim 3
Dependent Claim
25 words
A plug as claimed in claim 1, comprising an O-ring seal interposed between said ring and said lower plug for forming a sealing connection therebetween.
Claim 4
Dependent Claim
50 words
A plug as claimed in claim 1, said ring and said lower plug portions each having a complementary annular groove formed therein, said annular means comprising a circlip extending into said grooves so as to permit relative rotation between said ring and lower plug portion while restraining axial motion therebetween.
Claim 5
Dependent Claim
24 words
A plug as claimed in claim 1, comprising external means formed on said ring providing a surface for cooperative engagement with a tightening wrench.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |