U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Portable cordless electric hair dressing appliance utilizing stored heat

Patent 4757183 Issued on July 12, 1988. Estimated Expiration Date: Icon_subject May 20, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2003496

2606274

3377715

3391470

3797475

3885126

Inventors

Assignee

Application

No. 06/865257 filed on 05/20/1986

US Classes:

392/341, For fluid heating (e.g., gas or liquid, etc.)219/543, Comprising coating printed or deposited on core sheath or support means320/124, SEQUENTIAL CHARGING OR DISCHARGING OF BATTERIES OR CELLS34/523, APPARATUS34/97, With gas or vapor flow for contact392/344, For subsequent heating by convection392/346, Heat accumulating medium details392/380, For drying body part392/385Pistol-grip type

Examiners

Primary: Bartis, Anthony

International Classes

A45D 20/10 (20060101)
A45D 20/00 (20060101)

Foreign Application Priority Data

1985-05-22 DE

Abstract

A cordless portable hand held hair dressing appliance has a housing provided with a pistol-grip handle and containing a battery operated electric fan arranged to draw air into the housing through an air inlet for flow through a heat structure to be heated prior to discharge from a housing air outlet. The heater structure includes air elongated heat accumulator member of high specific heat penetrated in the longitudinal direction by a plurality of air ducts each having an intake communicating with the housing inlet and an outlet communicating with a mixing chamber connected to the housing outlet. The heat accumulator member is formed of a ceramic, e.g., Al2 O3 and MgO, and is adapted to be heated to store heat therein by an electrical heating conductor structure formed by a layer of electrical resistance material on the wall of each duct. The fan battery is rechargeable and the handle is provided with a detachable electric plug contacts for connecting the heating conductor structure to an external power source for preheating prior to use and for connecting the rechargeable battery to a batter charger.

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