Dish washer

• US 7,918,943 B2
• Filed: 01/14/2005
• Issued: 04/05/2011
• Est. Priority Date: 01/14/2005
• Status: Active Grant

• Current Assignee: Hoshizaki Corporation
• Original Assignee: Hoshizaki Denki Kabushiki Kaisha
• Inventors: Tameishi, Yoshimasa, Hosogi, Tadaharu, Suyama, Tomio
• Primary Examiner(s): Barr; Michael
• Assistant Examiner(s): Ko; Jason Y
• Application Number:
  US11/795,172
• Publication Number:
  US 20080092933A1
• Time in Patent Office: 2,272 Days
• Field of Search: 134/56.D
• US Class Current: 134/56.00D
• CPC Class Codes: A47L 15/0078 with a plurality of fluid recirculation arrangements, e.g. with separated washing liquid and rinsing liquid recirculation circuits
• CPC Class Codes: A47L 15/0081 with vertical sliding closing doors, e.g. hood-type dishwashers
• CPC Class Codes: A47L 15/23 moved by means of the sprays
• CPC Class Codes: A47L 15/4261 Connections of the door to the casing, e.g. door hinges
• CPC Class Codes: E05Y 2201/416 for counterbalancing
• CPC Class Codes: E05Y 2900/304 for dishwashers

Abstract

In this dishwasher 1, a spring 33 utilized for moving a door 7 up and down is accommodated within a column 6 of a washer body 2, so as to be confined within the column 6, whereby the appearance becomes better while the spring 33 is protected against water. Also, the space between left and right columns 6, 6 can be utilized as a washing chamber 3, thus making it possible to expand the washing chamber 3, whereby the dishwasher can be made smaller while keeping the capacity of the washing chamber 3.

Claims

1. A dishwasher adapted to open and close a washing chamber provided on a washer body side by moving a door up and down while rotating a rotary arm arranged on a side face of the door, the dishwasher comprising:

a pair of pipe-like left and right columns provided at both corners on a rear side of the washer body; and

springs vertically accommodated in the respective columns, each spring having an upper end attached to a base side of the rotary arm and a lower end attached to the washer body side,

wherein the columns prevent wash water from contacting the springs.

2. A dishwasher according to claim 1, further comprising:

a holder, provided at an upper end of each column, having the base side of the rotary arm penetrated therethrough;

a rotary shaft rotatably joining the holder and rotary arm to each other within the holder; and

a stopper surface, formed within the holder, for restricting a range of rotation of the rotary arm by abutting against the rotary arm.

3. A dishwasher according to claim 1,

wherein the lower end of each spring extends to a mechanical chamber disposed in a lower part of the washer body and is secured to the washer body by first fastening means;

wherein the upper end of each spring is secured to the base side of the rotary arm by second fastening means; and

wherein an upper end of each column is formed with an opening for removing and inserting a spring.

4. A dishwasher according to claim 2,

wherein the lower end of each spring extends to a mechanical chamber disposed in a lower part of the washer body and is secured to the washer body by first fastening means;

wherein the upper end of each spring is secured to the base side of the rotary arm by second fastening means; and

wherein an upper end of each column is formed with an opening for removing and inserting a spring.

5. A dishwasher according to claim 1, further comprising:

a rear panel arranged on a backside of the washer body and secured to the washer body so as to join the left and right columns to each other.