Method and apparatus for forming a reference pressure within a chamber of a capacitance sensor
First Claim
1. A method for attaching a first part to a second part, the method comprising:
- depositing a sealing material on at least a portion of at least one of the first part and the second part;
positioning the second part in a space defined by a guide such that gravity tends to pull the second part away from the first part;
moving the first part, the second part, and the guide so that gravity tends to pull the second part toward the first part;
melting the sealing material; and
allowing the sealing material to cool.
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0 Petitions
Accused Products
Abstract
The present invention is directed at methods and apparatuses for facilitating the establishment of a reference pressure within a reference chamber of a pressure transducer. The transducer has a housing and a cover, the housing defining a reference chamber and an aperture. A meltable sealing material is disposed on at least one of the cover and the housing. The apparatus includes a pressure chamber that is rotatable between a first position and a second position, a pressure source that is connected to the pressure chamber, a guide that is attachable to the transducer near the aperture, and a heater for selectively heating the pressure chamber to a temperature sufficiently high to melt the sealing material. The cover is positioned in an internal space of the guide. The guide is attached to the transducer near the aperture. The transducer, cover and guide are placed in the pressure chamber, the pressure chamber is rotated to the first position and a pressure is generated in the pressure chamber via the pressure source. After a reference pressure has been established in the reference chamber, the pressure chamber is rotated to the second position. Gravity causes the cover to move within the space towards the aperture when the pressure chamber is rotated to the second position. The heater then heats the pressure chamber to melt the sealing material. Upon cooling, the sealing material forms a seal that seals the reference pressure in the reference chamber of the transducer.
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Citations
16 Claims
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1. A method for attaching a first part to a second part, the method comprising:
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depositing a sealing material on at least a portion of at least one of the first part and the second part; positioning the second part in a space defined by a guide such that gravity tends to pull the second part away from the first part; moving the first part, the second part, and the guide so that gravity tends to pull the second part toward the first part; melting the sealing material; and allowing the sealing material to cool. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for use in joining a first part to a second part, a meltable joining material being disposed on at least a portion of at least one of the first part and the second part, the apparatus including:
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a chamber, the chamber being moveable between a first position and a second position, the chamber being sufficiently large to house the first part and the second part; a guide disposed within the chamber for guiding the second part, gravity tending to cause the first part and the second part to separate when the chamber is in the first position, gravity tending to cause the first part and the second part to be brought together when the chamber is in the second position; and a heater for selectively heating the chamber to a temperature sufficiently high to melt the joining material. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification