1. An adjustable support apparatus, comprising:
a first endcap having a first section for connecting to a mount, a second section connected to the first section, and a clevis receiving member connected to one or both of the first and second sections, the first endcap having a longitudinal axis therealong;
a second endcap having first and second sections, the first section of the second endcap for supporting a user device and the second section of the second endcap being connected to the first section of the second endcap;
a first channel having first and second ends, the first end of the first channel being connected to the second section of the first endcap, and the second end of the first channel being connected to the second section of the second endcap;
a second channel having first and second ends, the first end of the second channel being connected to the second section of the first endcap, and the second end of the second channel being connected to the second section of the second endcap; and
a clevis assembly including a clevis in operative engagement with the clevis receiving member of the first endcap and with a spring member coupled to the first channel;
wherein the clevis is adjustable along the clevis receiving member at a predetermined angle relative to the axis of the first endcap to change a compression state of the spring member.
2. The adjustable support apparatus of claim 1, wherein the clevis assembly further comprises a rod in threaded engagement with the clevis, the rod being positioned at the predetermined angle relative to the axis of the first endcap.
3. The adjustable support apparatus of claim 1, wherein the predetermined angle is between 10\xb0 and 80\xb0.
4. The adjustable support apparatus of claim 1, wherein the predetermined angle is between about 45\xb0 to 70\xb0.
5. The adjustable support apparatus of claim 1, wherein the first endcap includes a housing connecting the first and second sections, the clevis receiving member is disposed along an interior sidewall of the housing, and the clevis receiving member includes a surface having the predetermined angle sloping from the second section to the first section.
6. The adjustable support apparatus of claim 1, further comprising a first fastener having a first length and a pair of second fasteners each having a second length shorter than the first length, wherein the first end of the first channel connects to the second section of the first endcap with the first fastener and the first end of the second channel connects to the second section of the first endcap with the pair of second fasteners.
7. The adjustable support apparatus of claim 6, wherein the first endcap includes a housing connecting the first and second sections and the housing includes a pair of reinforcing members to support the pair of second fasteners therein.
8. The adjustable support apparatus of claim 1, further comprising at least one endcap cover, wherein the first endcap further includes a flange member connected to the first and second sections, and the at least one endcap cover is adapted to be placed adjacent to the flange member and cover a portion of the first endcap.
9. The adjustable support apparatus of claim 1, wherein the first channel further includes an integrally molded connector having an angled receiving member for securing the spring member to the first channel.
10. The adjustable support apparatus of claim 9, further comprising a retaining cover connectable to the first channel, wherein the spring member is secured to the first channel between the retaining cover and the angled receiving member.
11. The adjustable support apparatus of claim 1, wherein the first channel further includes a reinforcement structure therein.
12. An adjustable support apparatus, comprising:
a first endcap having first and second ends and a longitudinal axis from the first end to the second end, the second end including means for mounting the adjustable support apparatus to a surface;
a second endcap having means for supporting a user device;
a first channel having first and second ends, the first end of the first channel being connected to the first end of the first endcap, and the second end of the first channel being connected to the second endcap;
a second channel having first and second ends, the first end of the second channel being connected to the first end of the first endcap, and the second end of the second channel being connected to the second endcap, the first and second channels defining a cavity for containing a spring mechanism therein; and
means for adjusting the spring mechanism, the means for adjusting being moveable along a path at a predetermined angle relative to the axis of the first endcap.
13. An adjustment assembly for adjustably supporting a device with an extension and retraction mechanism, the adjustment assembly comprising:
a housing having a longitudinal axis therealong and a track positioned at an angle relative to the longitudinal axis;
a clevis having first and second ends, the first end having a surface for engaging the track and the second end having an opening therein for connecting the extension and retraction mechanism at a first end thereof; and
a channel apparatus having a first end connected to the housing and a second end connected to a second end of the extension and retraction mechanism;
wherein the clevis is adjustable along the track to change positioning of the extension and retraction mechanism.
14. The adjustment assembly of claim 13, further comprising:
a rod for threadedly adjusting the clevis along the track, the rod having a head at one end thereof, a tip remote from the head, and a threaded section disposed between the head and the tip; and
a retaining plate for securing the rod to an edge of the housing, the edge of the housing and the retaining plate including mating recesses defining a receptacle for receiving the tip of the rod therein.
15. The adjustment assembly of claim 13, wherein the clevis includes bottom and top surfaces that are substantially parallel to one another, and the opening of the clevis is positioned at a height at a midpoint between the bottom and top surfaces.
16. The adjustment assembly of claim 13, wherein the clevis includes bottom and top surfaces that are substantially parallel to one another, and the opening of the clevis is positioned at a height above a midpoint between the bottom and top surfaces.
17. The adjustment assembly of claim 16, wherein the second end of the clevis is angled upward.
18. The adjustment assembly of claim 13, wherein the clevis includes bottom and top surfaces that are substantially parallel to one another, and the opening of the clevis is positioned at a height below a midpoint between the bottom and top surfaces.
19. The adjustment assembly of claim 18, wherein the second end of the clevis is angled downward.
20. The adjustment assembly of claim 13, wherein the second end of the clevis includes a pair of spaced apart fastening members and the opening comprises a pair of aligned opening, a first one of the openings being positioned in a first one of the fastening members and a second one of the openings being positioned in a second one of the fastening members, and the clevis including a receptacle for threadedly adjusting the clevis along the track, wherein the angle of the track is a first angle relative to the longitudinal axis and the receptacle is positioned at a second angle relative to the longitudinal axis.
21. The adjustment assembly of claim 20, wherein the first and second angles are substantially equal.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What we claim is:
1. A surface acoustic wave device comprising:
(i) a container, (ii) input external terminals, output external terminals and ground external terminals which are disposed at the outer peripheral surfaces of said container, and (iii) input pads, output pads and ground pads which are disposed inside of a cavity portion of said container and which are respectively electrically connected to said input external terminals, said output external terminals and said ground external terminals;
a plurality of SAW filter elements housed in said cavity portion of said container;
a plurality of ground conductor films respectively formed in the areas where said SAW filter elements are housed in said cavity portion; and
a metallic lid which hermetically seals said cavity portion of said container,
wherein the input electrodes, output electrodes and ground electrodes of said SAW filter elements are respectively connected to said input pads, said output pads and said ground pads,
said ground conductor films respectively formed in the areas where said SAW filter elements are respectively housed, being electrically separated from one another within said container.
2. A surface acoustic wave device according to claim 1, wherein at least one of the ground external terminals connected to each ground conductor film, is connected to said metallic lid, and other ground external terminal than said at least one ground external terminal is not connected to said metallic lid, and a high impedance portion is formed at that area of each ground conductor film which is located in the vicinity of said at least one ground external terminal connected to said metallic lid.
3. A surface acoustic wave device according to claim 2, wherein a low impedance portion is formed at that area of each ground conductor film which is located in the vicinity of said ground external terminal which is not connected to said metallic lid.
4. A surface acoustic wave device according to claim 2, wherein said ground external terminals connected to said metallic lid are located in opposite positions of outer peripheral surfaces of said container, said opposite positions partitioning the neighboring two SAW filter elements.
5. A surface acoustic wave device according to claim 1, wherein said ground pads to which said ground electrodes of said SAW filter elements are respectively connected, are electrically separated from one another inside of said container.
6. A surface acoustic wave device according to claim 1, wherein said ground external terminals are formed on different outer peripheral surfaces of said container.
7. A surface acoustic wave device according to claim 1, wherein only one SAW filter element is connected to the same ground pad.
8. A surface acoustic wave device comprising:
(i) a rectangular container, (ii) input external terminals, output external terminals and ground external terminals which are disposed on outer peripheral surfaces of said container, and (iii) input pads, output pads and ground pads which are disposed inside of a cavity portion of said container and which are respectively electrically connected to said input external terminals, said output external terminals and said ground external terminals;
a plurality of SAW filter elements housed in said cavity portion of said container and connected in cascade to one another;
a ground conductor film formed in the area where said SAW filter elements are housed in said cavity portion; and
a metallic lid which hermetically seals said cavity portion of said container,
the input electrodes, output electrodes and ground electrodes of said SAW filter elements being respectively connected to said input pads, said output pads and said ground pads,
the input external terminal electrically connected to the forefront SAW filter element out of said cascade-connected SAW filter elements, being formed at or in the vicinity of a first corner portion of said outer peripheral surfaces of said container, and the output external terminal electrically connected to the last-stage SAW filter element, being formed at or in the vicinity of a second corner portion which is located in a diagonal direction with respect to said first corner portion.
9. A surface acoustic wave device according to claim 8, wherein said ground conductor film is formed in the area where each SAW filter element is housed in said cavity portion; and
said ground conductor films respectively formed in the areas where said SAW filter elements are housed, are electrically separated from one another within said container.
10. A surface acoustic wave device according to claim 9, wherein at least one of said ground external terminals connected to each ground conductor film, is connected to said metallic lid, and other ground external terminal than said at least one ground external terminal is not connected to said metallic lid, and a high impedance portion is formed at that area of each ground conductor film which is located in the vicinity of said at least one ground external terminal connected to said metallic lid.