US3870145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of fabrics in machine dryers
Assignee: Joh A Benckiser GmbH
•
Filing: 1972-05-17
•
Granted: 1975-03-11
•
Expires: 1992-05-17
Abstract
Abstract Fabrics are treated in machine drying apparatus to reduce static electricity carried by the fabrics, soften the fabrics and improve other fabric properties. A sponge impregnated with a heat softenable solid or semi-solid fabric-conditioning agent is placed within the dryer drum and the fabrics are tumbled in the dryer thereby causing some of the fabric-conditioning agent to be transferred to the fabric. When the dryer is heated, the heat of the dryer helps the fabric-conditioning agent to soften and assists in its distribution over the surface of fabric with which the impregnated sponge is brought into tumbling contact.
Inventors
- 👤 William G Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
D; D06; D06C; D06C29/00; D06F; D06F58/00; D06F58/20; D06F58/203
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
An article of manufacture comprising: a. an impregnated sponge having an average pore size of 0.05 to 4 millimeters which has been impregnated from its surface into its interior with about 0.3 to about 0.7 gram, per cubic centimeter of unimpregnated sponge, of a heatsoftenable fabric conditioning agent comprising a quaternary ammonium salt, said fabric conditioning agent having a softening point range of at least 10 C. * being softened within the range of 50* to 90*C.; and b. attaching means operably associated with said impregnated sponge for attaching the impregnated sponge to a wall of a machine dryer.
Claim 2
Dependent Claim
99 words
An article of manufacture comprising: a. an impregnated sponge having an average pore size of 0.05 to 4 millimeters which has been impregnated from its surface into its interior with about 0.3 to about 0.7 gram, per cubic centimeter of unimpregnated sponge, of a heatsoftenable fabric conditioning agent comprising a quaternary ammonium salt, said fabric conditioning agent having a softening point range of at least 10 C. * being softened within the range of 50* to 90*C.; and b. attaching means operably associated with said impregnated sponge for attaching the impregnated sponge to a wall of a machine dryer.
Claim 3
Dependent Claim
76 words
AN ARTICLE OF MANUFACTURE COMPRISING: A. AN IMPREGNATED SPONGE HAVING AN AVERAGE PORE SIZE OF 0.05 TO 4 MILLIMETERS WHICH HAS BEEN IMPREGNATED FROM ITS SURFACE INTO ITS INTERIOR WITH ABOUT 0.3 TO ABOUT 0.7 GRAM PER CUBIC CENTIMETER OF UNIMPREGNATED SPONGE, OF A HEATSOFTENABLE FABRIC CONDITIONING AGENT COMPRISING A QUATERNARY AMMONIUM SALT, SAID FABRIC CONDITIONING AGENT HAVING A SOFTENING POINT RANGE OF AT LEAST 10*C. BEING SOFTENED WITHIN THE RANGE OF 50* TO 90*C.; AND
Claim 4
Dependent Claim
76 words
AN ARTICLE OF MANUFACTURE COMPRISING: A. AN IMPREGNATED SPONGE HAVING AN AVERAGE PORE SIZE OF 0.05 TO 4 MILLIMETERS WHICH HAS BEEN IMPREGNATED FROM ITS SURFACE INTO ITS INTERIOR WITH ABOUT 0.3 TO ABOUT 0.7 GRAM PER CUBIC CENTIMETER OF UNIMPREGNATED SPONGE, OF A HEATSOFTENABLE FABRIC CONDITIONING AGENT COMPRISING A QUATERNARY AMMONIUM SALT, SAID FABRIC CONDITIONING AGENT HAVING A SOFTENING POINT RANGE OF AT LEAST 10*C. BEING SOFTENED WITHIN THE RANGE OF 50* TO 90*C.; AND
Claim 5
Dependent Claim
20 words
The product of claim 1 in which the sponge has an average pore size of from 0.1 to 2 mm.
Claim 6
Dependent Claim
16 words
The product of claim 2, wherein said attaching means includes a woven loop and hook fastener.
Claim 7
Dependent Claim
25 words
The product of claim 3 wherein the impregnated sponge is contained within a cloth envelope, and said attaching means is attached to said cloth envelope.
Claim 8
Dependent Claim
17 words
The product of claim 3 wherein the fabric conditioning agent comprises dimethyl di (hydrogenated tallow) ammonium chloride.
Claim 9
Dependent Claim
31 words
The product of claim 1 wherein the sponge has a smaller pore size along one surface of the sponge relative to the pore size along the opposite surface of the sponge.
Claim 10
Dependent Claim
32 words
The product of claim 1 wherein the impregnated sponge is contained within a dispenser, at least a portion of which is permeable to the fabric conditioning agent under the conditions of use.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |