US4760708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerated showcase
Assignee: Individual
•
Filing: 1987-02-02
•
Granted: 1988-08-02
•
Expires: 2007-02-02
Abstract
Abstract A refrigerated showcase in which refrigerated air for refrigerating the interior of the showcase and preventing ambient air from invading in the showcase is circulated across a front opening of the showcase and through a bottom wall, a rear wall and a top wall of the showcase, is improved according to the present invention. The improvements reside in that a gas-permeable spacer is disposed at the end of shelves within the showcase and spaced from the front surface of the rear wall to form a refrigerated air introducing duct space between the spacer and the rear wall.
Inventors
- 👤 Masashi Karashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:27
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0439; A47F3/0443; A47F3/0447
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
405 words
A refrigerated showcase for circulating refrigerated air to refrigerate goods displayed therein and for preventing ambient air from flowing therein, said showcase comprising: a front wall having an opening extending therethrough open to the ambient air, said front wall comprising a duct, a first portion of the duct having an intake port open to said opening through which ambient air is introduced into the duct, and a second portion of the duct having a blow-out port open to said opening and disposed across said opening from said intake port; a bottom wall extending from said front wall, said bottom wall comprising a duct open to and extending from said first portion of the duct of which the front wall is comprised so as to be continuous therewith; a rear wall extending from said bottom wall and spaced from said front wall; said rear wall comprising a duct open to and extending from the duct of which said bottom wall is comprised so as to be continuous therewith, a top wall extending from said rear wall to said front wall, said top wall comprising a duct open to and extending between the duct of which said rear wall is comprised and said second portion of the duct of which said front wall is comprised such that a continuous flow path extends in a direction from said intake port through said front wall, said bottom wall, said rear wall, and said top wall to said blow-out port and across said opening; a gas-permeable spacer extending in said display space and spaced from the duct of which said rear wall is comprised so as to define a refrigerated air introducing space therebetween that is separated from but open to said continuous flow path, said spacer also spaced from said front wall so as to define a display space therebetween in which the goods are displayed; and air circulating means for circulating refrigerating air along said continuous flow path and into said air introducing space from said continuous flow path so that the refrigerating air permeates said gas-permeable spacer and flows into said display space, said air circulating means including a shelf extending from said gas-permeable spacer toward said opening extending through said front wall and into the portion of the continuous flow path that extends across said opening for deflecting a portion of the refrigerating air circulating along the continuous flow path into said refrigerated air introducing space.
Claim 2
Dependent Claim
405 words
A refrigerated showcase for circulating refrigerated air to refrigerate goods displayed therein and for preventing ambient air from flowing therein, said showcase comprising: a front wall having an opening extending therethrough open to the ambient air, said front wall comprising a duct, a first portion of the duct having an intake port open to said opening through which ambient air is introduced into the duct, and a second portion of the duct having a blow-out port open to said opening and disposed across said opening from said intake port; a bottom wall extending from said front wall, said bottom wall comprising a duct open to and extending from said first portion of the duct of which the front wall is comprised so as to be continuous therewith; a rear wall extending from said bottom wall and spaced from said front wall; said rear wall comprising a duct open to and extending from the duct of which said bottom wall is comprised so as to be continuous therewith, a top wall extending from said rear wall to said front wall, said top wall comprising a duct open to and extending between the duct of which said rear wall is comprised and said second portion of the duct of which said front wall is comprised such that a continuous flow path extends in a direction from said intake port through said front wall, said bottom wall, said rear wall, and said top wall to said blow-out port and across said opening; a gas-permeable spacer extending in said display space and spaced from the duct of which said rear wall is comprised so as to define a refrigerated air introducing space therebetween that is separated from but open to said continuous flow path, said spacer also spaced from said front wall so as to define a display space therebetween in which the goods are displayed; and air circulating means for circulating refrigerating air along said continuous flow path and into said air introducing space from said continuous flow path so that the refrigerating air permeates said gas-permeable spacer and flows into said display space, said air circulating means including a shelf extending from said gas-permeable spacer toward said opening extending through said front wall and into the portion of the continuous flow path that extends across said opening for deflecting a portion of the refrigerating air circulating along the continuous flow path into said refrigerated air introducing space.
Claim 3
Dependent Claim
16 words
A refrigerated showcase as claimed in claim 1, wherein said gas-permeable spacer is a network body.
Claim 4
Dependent Claim
16 words
A refrigerated showcase as claimed in claim 1, wherein said gas-permeable spacer is a perforated plate.
Claim 5
Dependent Claim
16 words
A refrigerated showcase as claimed in claim 1, wherein said gas-permeable spacer is a fibrous fabric.
References Cited (Backward Citations)
US3125864A
Cited
US3063255A
Cited
US3218822A
Cited
US3584467A
Cited
US3827254A
Cited
US4592209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |