Themostatic oven
AssigneeYashima Works, Ltd.
InventorMinoru Yashima
Life of this patent
Estimating the term…
Abstract
A thermostatic oven having an oven body with a front opening having a door which comprises windable sheets which cover the front opening with a space therebetween to close the same and which are wound up when the front opening is to be opened.
Claims13
A thermostatic oven having an oven body with a front opening having a door which comprises at least one windable sheet which covers the front opening and is wound or unwound to open and close said front opening;
- means located on the oven body for winding and unwinding the windable sheet;
- wherein said winding means comprises a rotatable winding roller to which one end of the windable sheet is connected to wind and unwind the windable sheet by the rotation of the winding roller;
- means located on the oven body for actuating the rotatable winding roller, and further comprising means for pressing the windable sheet against the oven body when the front opening is closed by the windable sheet wherein said pressing means comprises a movable frame having an opening corresponding to the front opening for pressing a peripheral edge of the windable sheet against the oven body to seal the front opening when the front opening is closed by the windable sheet.
A thermostatic oven having an oven body with a front opening, comprising a door which comprises a plurality of windable sheets which are located in front of the front opening with a predetermined space therebetween and which are wound up when the front opening is opened, a plurality of frames corresponding to the windable sheets, each of said frames having an opening corresponding to the front opening of the oven body, the spaces between the sheets defining heat insulation spaces, said sheets being connected at one end to a rotatable winding roller provided on the oven body and at the opposite ends to connecting wires which are connected to springs to bias the respective sheets to a closed position in which the front opening is closed by the sheets.
Dependencies are inferred from the claim text.