US4558929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-fogging mirror
Assignee: Individual
•
Filing: 1984-01-26
•
Granted: 1985-12-17
•
Expires: 2004-01-26
Abstract
Abstract A non-foggable mirror assembly for use in a shower comprises a mirror mounted on a unitary frame. The frame is recessed to provide a space between the back surface of the mirror and the frame. This space serves as a chamber for hot water, which is fed through a port at the bottom of the chamber, and which exits through a continuously open port at the top of the chamber. The bottom port is connected to an adapter for connection to a water pipe leading to a shower head for tapping off heated water. The heated water passes upwardly through the chamber continuously, heating the mirror, and preventing condensation.
Inventors
- 👤 John A. Stephens
- 👤 Martin Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:15
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/18; G02B7/181; G02B7/1815; A; A47; A47G; A47G1/00; A47G1/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
136 words
A non-foggable mirror assembly for use in a shower comprising a mirror having a reflective surface and a back surface; a chamber in heat exchange relationship with substantially the entire said back surface, the chamber having upper and lower ends and having an inlet port at the lower end and a continuously open outlet port at the upper end; adapter means for connection to a water pipe leading to a shower head for tapping off heated water from the water pipe; and means connected between said adapter means and the inlet port for conducting heated water from said adapter means into the chamber through said inlet port, whereby heated water flows upwardly through said chamber from the inlet port to the outlet port, and said reflective surface is continuously heated by the water to prevent fogging.
Claim 2
Dependent Claim
136 words
A non-foggable mirror assembly for use in a shower comprising a mirror having a reflective surface and a back surface; a chamber in heat exchange relationship with substantially the entire said back surface, the chamber having upper and lower ends and having an inlet port at the lower end and a continuously open outlet port at the upper end; adapter means for connection to a water pipe leading to a shower head for tapping off heated water from the water pipe; and means connected between said adapter means and the inlet port for conducting heated water from said adapter means into the chamber through said inlet port, whereby heated water flows upwardly through said chamber from the inlet port to the outlet port, and said reflective surface is continuously heated by the water to prevent fogging.
Claim 3
Dependent Claim
58 words
A non-foggable mirror assembly according to claim 1 in which the chamber is constituted by the mirror and a unitary sheet, the sheet having a planar margin area abutting the back surface of the mirror around substantially the entire periphery thereof and a recess surrounded by the margin area and spaced from the back surface of the mirror.
References Cited (Backward Citations)
US3708218A
Cited
GB1490373A
Cited
JPS5232753A
Cited
US4150869A
Cited
US4327961A
Cited
GB2110529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |