Locking device sustaining high pressure for coffee maker lid

• US 6,935,222 B2
• Filed: 07/09/2003
• Issued: 08/30/2005
• Est. Priority Date: 07/09/2003
• Status: Expired due to Fees

• Current Assignee: Electrical & Electronics, Limited
• Original Assignee: Electrical & Electronics, Limited
• Inventors: Poon, Sum Fat, Chen, Yee Mau
• Primary Examiner(s): ALEXANDER, REGINALD
• Application Number:
  US10/616,417
• Publication Number:
  US 20050005775A1
• Time in Patent Office: 783 Days
• Field of Search: 993/02.R, 992/95, 992/90, 992/92, 992/93
• US Class Current: 99/302.00R
• CPC Class Codes: A47J 31/0668 specially adapted for cartridges
• CPC Class Codes: A47J 31/3676 Cartridges being employed
• CPC Class Codes: A47J 31/4407 Lids, covers or knobs

Abstract

This invention provides a locking device sustaining high pressure in a coffee maker which comprises a brew head assembly which comprises: a slide assembly, a sealing assembly and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars. Furthermore, this invention provides a method for one-hand operation on the locking of a coffee maker comprising steps of: a) Using one hand to put the lever forward to release the lock which is controlled by two parts, the slider and the three mounts on the brew base wherein the back-and-forth movement of the slider will produce the action of locking and releasing; b) Moving the lever forward, produce the push rod that is assembled on the slider will push the slider forward so the brew head is released; c) Putting back the lever, the push rod will put back the slider so the brew head is locked; and d) after releasing the lock, the lift platform will pop up by the lift platform spring and the lid mount roll up by the hinge spring.

Claims

1. A brew head assembly of a coffee maker comprising:

a slide assembly, a sealing assembly, and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars, wherein the slide assembly comprises a lever, slider part, slider spring, and a lid frame.

2. The brew head of claim 1, wherein the pop-up and roll-back assembly comprises a lift platform, a lift platform spring, a hinge pins a hinge spring, and a brew head base.

3. The brew head of claim 2, wherein the lift platform comprises at least two legs for pop-up action.

4. The brew head of claim 2, wherein the roll up of the lid mount is by the hinge spring.

5. A brew head assembly of a coffee maker comprising:

a slide assembly, a sealing assembly, and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars, wherein the sealing assembly comprises an “

O”

ring, a water spreader top, a seal ring, a water spreader bottom, a metal pod filter, a coffee collector, and a brew head bottom.

6. The brew head of claim 5, wherein the shape of the seal ring is round with a two-flap end capable of withstanding pressure up to four (4) bars.

7. The brew head of claim 6, wherein the seal ring is made of silicone rubber.

8. The brew head of claim 5, wherein the metal pod filter creates a back pressure for a little rise up of the sealing assembly.

9. A brew head assembly of a coffee maker comprising:

a slide assembly, a sealing assembly, and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars, wherein the slide assembly comprises;

a lever;

a slider operatively linked to the lever by a push rod; and

a slider spring, wherein the lever, the slider, the push rod and the slider spring are operatively fixed on a lid mount.

10. A brew head assembly of a coffee maker comprising:

a slide assembly, a sealing assembly, and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars, wherein the sealing assembly comprises;

an “

O”

ring

a water spreader top;

a seal ring;

a water spreader bottom;

a metal pod filter; and

a coffee collector.

11. The sealing assembly of claim 10, wherein the seal ring is made of silicone rubber or other suitable material capable of preventing leaks at pressure of up to four (4) bars.

12. A brew head assembly of a coffee maker comprising:

a slide assembly, a sealing assembly, and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars, wherein the pop-up and roll-back assembly comprises;

a lift platform having at least two legs operatively moveably attached to a brew head base, wherein a lift platform spring is placed on at least one leg of the lift platform; and

a hinge pin which operatively links a hinge spring and the slide assembly to the lift platform.