US3650040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film dryer
Assignee: Solartron Electronics Inc
•
Filing: 1969-08-28
•
Granted: 1972-03-21
•
Expires: 1989-08-28
Abstract
Abstract A dryer assembly particularly designed for use by photographers who do their own developing, comprising a closed system isolated from the ambient environment, containing a desiccant space and an article-containing space suitable to receive film strips, and means to circulate the air in closed cycles through the article space, and desiccant contained in said desiccant space.
Inventors
- 👤 Louis D Statham
- 👤 Walter H Eisele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:56
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D15/00; G03D15/02; G03D15/022
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
199 words
A portable dryer comprising a closed air space, a base to said space, a motor chamber in said base, an impeller driven by said motor, a longitudinal air conduit formed of an outer and inner cylinder, an annular space between said cylinders, chordal vanes in said annular space, the lower end of said cylinders forming a volute section for said impeller, the lower ends of said inner cylinder communicating with the eye of said impeller, air communication between said cylinders at their ends opposite the volute sections, a spider having a rim seated on the upper end of said inner cylinder, a pin centrally located on said spider and extending upwardly from said spider, a lid carrying a central boss depending from the inner surface of said lid, a socket in said boss coacting with said pin, a flange in the outer surface of said lid and seated on the end of the outer cylinder; said socket, pin and flange located so that, when the pin is inserted in said socket, the said lid flange is seated on the end of the outer cylinder and the rim of said spider is seated on the end of the inner cylinder.
Claim 2
Dependent Claim
199 words
A portable dryer comprising a closed air space, a base to said space, a motor chamber in said base, an impeller driven by said motor, a longitudinal air conduit formed of an outer and inner cylinder, an annular space between said cylinders, chordal vanes in said annular space, the lower end of said cylinders forming a volute section for said impeller, the lower ends of said inner cylinder communicating with the eye of said impeller, air communication between said cylinders at their ends opposite the volute sections, a spider having a rim seated on the upper end of said inner cylinder, a pin centrally located on said spider and extending upwardly from said spider, a lid carrying a central boss depending from the inner surface of said lid, a socket in said boss coacting with said pin, a flange in the outer surface of said lid and seated on the end of the outer cylinder; said socket, pin and flange located so that, when the pin is inserted in said socket, the said lid flange is seated on the end of the outer cylinder and the rim of said spider is seated on the end of the inner cylinder.
Claim 3
Dependent Claim
20 words
The dryer of claim 1, including a filter positioned in the air stream between the inner and the outer cylinder.
Claim 4
Dependent Claim
20 words
The dryer of claim 2, including also a metallic canister adapted to receive dessicant material positioned on said inner cylinder.
Claim 5
Dependent Claim
25 words
The dryer of claim 1, including a spider positioned adjacent the end of said outer cylinder adjacent said impeller, a filter carried on said spider.
Claim 6
Dependent Claim
125 words
A portable dryer comprising a closed air space, a base to said space, a motor chamber in said base, an impeller driven by said motor, a longitudinal air conduit formed of an outer and an inner cylinder, an annular space between said cylinders, chordal vanes positioned in the lower portion of said annular space, and extending part way along the length of said annular space at non-rectangular angles to the radius of said outer cylinder, said cylinders forming a volute section for said impeller the lower ends of said inner cylinder communicating with the eye of said impeller, air communication between said cylinders at their ends opposite the volute sections, and a closure for said outer cylinder forming with said base a closed air space.
Claim 7
Dependent Claim
125 words
A portable dryer comprising a closed air space, a base to said space, a motor chamber in said base, an impeller driven by said motor, a longitudinal air conduit formed of an outer and an inner cylinder, an annular space between said cylinders, chordal vanes positioned in the lower portion of said annular space, and extending part way along the length of said annular space at non-rectangular angles to the radius of said outer cylinder, said cylinders forming a volute section for said impeller the lower ends of said inner cylinder communicating with the eye of said impeller, air communication between said cylinders at their ends opposite the volute sections, and a closure for said outer cylinder forming with said base a closed air space.
Claim 8
Dependent Claim
20 words
The dryer of claim 5, including a filter positioned in the air stream between the inner and the outer cylinder.
Claim 9
Dependent Claim
20 words
The dryer of claim 6, including also a metallic canister adapted to receive dessicant material positioned on said inner cylinder.
Claim 10
Dependent Claim
25 words
The dryer of claim 5, including a spider positioned adjacent the end of said outer cylinder adjacent said impeller, a filter carried on said spider.
Claim 11
Dependent Claim
20 words
The dryer of claim 8, iNcluding also a metallic canister adapted to receive dessicant material positioned on said inner cylinder.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |