CA2167449C

CA2167449C - Pressure cooking device

Info

Publication number: CA2167449C
Application number: CA 2167449
Authority: CA
Inventors: Chin-Ming Huang
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-17
Filing date: 1996-01-17
Publication date: 1999-08-31
Anticipated expiration: 2016-01-17
Also published as: CA2167449A1

Abstract

A pressure cooking device includes a column securely disposed to a floor and a bowl is fixedly disposed to the column, an arm and a bar respectively disposed to the column, the arm having a cap disposed thereto and a threaded shaft threadedly engaged through the arm and engaged to the cap, the bowl having a pair of lugs, each lug extending diametrically opposite with each other and the arm further having a stirrup integrally formed thereto wherein a first tip, a second tip and an arcuate periphery extending therebetween to define a substantially arcuate recess, two extension portions extending separately from the first tip and the second tip such that the arm can be pivoted above the bowl and the cap is securely mounted to the bowl by rotating downward the threaded shaft, the bar having a lifting device disposed thereto so as to put a steamer or food into the bowl.

Description

2 BACKGROUND OF THE lNv~ ION

3 1. Field of the Invention 4 The present invention relates to a pressure cooking S device and more particularly, to a pressure cooking device 6 having a column with a rotatable arm and a fixed bowl 7 disposed thereto, the rotatable arm having a cap with a 8 forcing means disposed thereto so as to be rotated to 9 securely mount onto the bowl.
2. Brief Description of the Prior Art 11 A conventional pressure cooker is designed to cook 12 food such as meat quickly, with a high pressure and a high 13 temperature. The pressure cooker is composed of a cap and a 14 bowl onto which the cap is securely mounted by a simple securing means so as to provide a high pressure and a high 16 temperature within the pressure cooker. The high pressure is 17 maintained in the pressure cooker by a sealing feature 18 provided by the securing means such that the meat can be 19 cooked effectively. However, the securing means of the cap has a simple structure which can only provide a limited 21 function for providing a high pressure in the bowl, and thus 22 prolongs the required cooking time and therefore involves 23 consumption of much more gas or electricity.
24 The present invention intends to provide a pressure cooking device which has a column with a rotatable arm 26 disposed thereto and a fixed bowl, a cap and a forcing means 27 disposed to the rotatable arm so as to mount onto the bowl by 28 rotating the arm and the forcing means provides a well sealed 2167g~9 1 feature between the bowl and the cap such that the pressure 2 cooking device can be operated under high pressure and high 3 temperature.
4 SUMMARY OF THE lNV~ ION
The present invention provides a pressure cooking 6 device which includes a column fixedly planted to a floor and 7 a bowl which is fixedly disposed to the column, an arm and a 8 bar are respectively disposed to the column, the arm having a 9 cap disposed thereto and a threaded shaft threadedly extending through the arm and engaged to the cap. The bowl 11 has a pair of lugs, each lug extending diametrically opposite 12 with each other and the arm further has a stirrup integrally 13 formed thereto wherein a first tip, a second tip and an 14 arcuate periphery extending therebetween to define a substantially arcuate recess. Two extension portions 16 extending separately from the first tip and the second tip 17 such that the arm can be pivoted above the bowl and the cap 18 is securely mounted to the bowl by rotating downward the 19 threaded shaft. The bar has a lifting device disposed thereto so as to put a steamer or food into the bowl.
21 It is an object of the present invention to provide a 22 pressure cooking device which has a pivotable arm disposed to 23 a column to which a bowl is fixedly disposed, the arm having 24 a cap disposed thereto and mechanically connected to a threaded shaft such that the cap is securely mounted to the 26 bowl by rotating the threaded shaft downwardly.
27 It is another object of the present invention to 28 provide a pressure cooking device which has a lifting means so ~1674q9 1 as to dispose food or a steamer with heavy weight into the 2 bowl.
3 Other objects, advantages, and novel features of the 4 invention will become more apparent from the following detailed description when taken in conjunction with the 6 accompanying drawings.

8 Fig. 1 is a perspective view of a pressure cooking 9 device in accordance with the present invention;
Fig. 2 is a side elevational view, partly in section, 11 of an arm being pivoted above a bowl; and 12 Fig. 3 is a side elevational view, partly in section, 13 of a cap disposed to the arm to be securely mounted to the 14 bowl by rotating a threaded shaft which is connected to the cap toward the bowl.

17 Referring to the drawings and initially to Fig. 1, a 18 pressure cooking device in accordance with the present 19 invention generally includes a column 10 having a first end fixedly secured to a floor and a second end. A bowl 40 is 21 fixedly connected to the column 10 by two plates 44 connected 22 therebetween, the bowl 40 having a pair of lugs 41, each lug 23 41 extending from an outer periphery thereof and located 24 diametrically opposite with each other, and having a stud 42 extending from an under side thereof.
26 An arm 50 is rotatably disposed to the column 10 by a 27 first tube 51 which is formed integrally to a first end of 28 the arm 50. The first tube 51 is slidably received on the 21674~9 1 column 10 and a first end thereof abuts a first collar 53 2 also slidably disposed to the column 10. A bolt 511 extends 3 through the first collar 53 and urges against the column 10 4 so as to retain the arm 50 at a desired height. A first oil feeding tube 52 is disposed to the first tube so as to feed 6 oil between the column 10 and the first tube 51. The arm 50 7 includes a stirrup portion integrally formed t a second end 8 thereof wherein a first tip, a second tip and an arcuate g periphery extending therebetween define a substantially semi-circular recess. An extension portion extends inwardly 11 from each of the first tip and the second tip to face each 12 other and each of the extension portions defines a cavity 55 13 in a top face thereof. A first hole 56 defined by a first 14 threaded periphery extends through a mediate point in the stirrup and a threaded shaft 57 is threadedly extended 16 through the first hole 56, the threaded shaft 57 having a 17 first end with a wheel 58 perpendicularly disposed thereto 18 and a second end with a cap 60 perpendicularly disposed 19 thereto. The cap 60 and the bowl 40 each respectively have a safety valve 65, 43 disposed thereto so as to release 21 pressure when needed.
22 A bar 20 is rotatably disposed to the second end of 23 the column 10 to which a second tube 21 is integrally formed, 24 the second tube 21 is received between an upper collar 23 and a lower collar 231, each of the upper collar 23 and the lower 26 collar 231 has a bolt threadedly extended therethrough and in 27 contact with the column 10 so as to position the second tube 28 21. A second oil feed tube 22 extends through the second tube 21674~9 1 21 so as to feed lubricating oil between the second tube 21 2 and the column 10. A lifting means 24 is disposed to a distal 3 end of the bar 20 and includes a frame 28 to which a mandrel 4 26 is rotatably disposed, the mandrel 26 connected to a motor 25 disposed to a side of the frame 28 so as to lift or lower 6 a cable 27 mounted around the mandrel 26.
7 Referring to Fig. 2, when operating the device, a 8 steamer 30 (or food) is hung on a hook disposed to the cable 9 27 and the bar 20 is pivoted above the bowl 40 to dispose the steamer 30 in the bowl 40, then the bar 20 is pivoted away 11 from the bowl 40, the arm 50 is pivoted above the bowl 40 and 12 the extension portions 54 are disposed to the under side of 13 the lug 41 corresponding thereto. Referring to Fig. 3, the 14 arm S0 is then moved to prevent the studs 42 to be extended into the cavities 55 of the extension portions 54, then the 16 wheel 58 is rotated to lower the cap 60 to mount on the bowl 17 40. The cap 60 has a second groove 63 defined in an under 18 periphery thereof and a seal 64 is disposed in the second 19 groove 63 such that an upper periphery of the bowl 40 is received in the second groove 63. The second end of the 21 threaded shaft 57 has a first groove 571 defined in a 22 periphery thereof for two half elements 62 respectively 23 received in the first groove 571. The cap 60 has a central 24 recess 61 defined therein for receiving the second end of the threaded shaft 57 and a plurality of second holes 611 each 26 defined by a second threaded periphery extending through in 27 the cap 60 and located around the central recess 61 such that 28 the two half elements 62 are fixedly engaged to the cap 60 by 2167~49 1 threading bolts through the half elements 62 and extending 2 thereafter into the second holes 611. Accordingly, when 3 rotating the wheel 58, the cap 60 is lowered by the threaded 4 shaft 57 to securely engage to the bowl 40 and the studs 42 are securely received in the cavities 55. Thus, the device 6 in accordance with the present invention can be used under 7 high pressure and high temperature, and can cook a mass 8 quantity of food which is disposed in the bowl 40 by using 9 the lifting means.
The threaded shaft 57 used to lower the cap 60 can 11 also replaced by a hydraulic assembly to provide a sufficient 12 force to mount the cap 60 to the bowl 40.
13 Although the invention has been explained in relation 14 to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made 16 without departing from the spirit and scope of the invention 17 as hereinafter claimed.

Claims

1. A pressure cooking device comprising:
a column having a first end secured to a floor and a second end;
a bowl fixedly connected to the column by at least one plate connected therebetween, said bowl having a pair of lugs, each lug extending from an outer periphery thereof and located diametrically opposite with each other;
an arm rotatably disposed to said column by a first end thereof and having a stirrup portion formed at a second end thereof wherein a first tip, a second tip and an arcuate periphery extending therebetween, an extension portion extending from each of said first tip and said second tip, a hole defined by a threaded periphery extending through a middle portion of said arm and a threaded shaft threadedly engaged through said hole, said threaded shaft having a first end with a wheel perpendicularly disposed thereto and a second end with a cap perpendicularly disposed thereto, said extension portion being disposed to an under side of said lug corresponding thereto when said arm is rotated to a location above said bowl and said cap is mounted to said bowl by rotating said threaded shaft, and a bar rotatably disposed to said second end of said column and said bar having a lifting means disposed to a distal end thereof.

2. The pressure cooking device as claimed in claim 1 wherein each of said lugs of said bowl has a stud extending from said under side thereof and each of said extension portions has a cavity defined therein so as to receive said stud corresponding thereto when said extension portions are disposed beneath said lugs.

3. The pressure cooking device as claimed in claim 1 wherein at least one of said cap and said bowl has a safety valve disposed thereto.

4. The pressure cooking device as claimed in claim 1 wherein said second end of said threaded shaft has a first groove defined in a periphery thereof, said cap having a central recess defined therein for receiving said second end of said threaded shaft and a plurality of second holes defined by a second threaded periphery in said cap and located around said central recess, two half elements respectively received in said first groove and being fixedly to said cap by threading bolts through said half elements and engaged to said second holes.

5. The pressure cooking device as claimed in claim 1 wherein said cap has a second groove defined in an under periphery thereof and a seal is disposed in said second groove such that an upper periphery of said bowl is received in said second groove.