US3679940A — Trimmer capacitor

Claim 1

Independent Claim 154 words

A variable electronic component for use in a sub-miniature electronic circuit disposed on a supporting substrate comprising; a. conductive contact means directly connectible to one side of the electronic circuit and having a portion forming a planar surface, b. u-shaped, conductive support means directly connectible to the other side of said electronic circuit independent of and in predetermined spaced relation to said contact means, c. movable means slidably mounted in said support means and adjusted for movement into and out of engagement with the planar surface of said contact means, d. means on said support means to normally maintain positive engagement with the movable means to hold the movable means in all given positions of adjustment relative the contact means, and e. means between the planar surface of said contact means and said movable means to provide a desired range of impedance characteristics to said variable electronic components on movement of the movable means.

Claim 2

Dependent Claim 154 words

A variable electronic component for use in a sub-miniature electronic circuit disposed on a supporting substrate comprising; a. conductive contact means directly connectible to one side of the electronic circuit and having a portion forming a planar surface, b. u-shaped, conductive support means directly connectible to the other side of said electronic circuit independent of and in predetermined spaced relation to said contact means, c. movable means slidably mounted in said support means and adjusted for movement into and out of engagement with the planar surface of said contact means, d. means on said support means to normally maintain positive engagement with the movable means to hold the movable means in all given positions of adjustment relative the contact means, and e. means between the planar surface of said contact means and said movable means to provide a desired range of impedance characteristics to said variable electronic components on movement of the movable means.

Claim 3

Dependent Claim 63 words

In a variable electronic component as claimed in claim 1 wherein, a. stop means is formed on said support means to limit the adjustable outward movement of the movable means on disengagement thereof from the contact means, b. and at least one other stop member disposed to coact with said movable means at full inward movement thereof during engagement with the contact means.

Claim 4

Dependent Claim 40 words

In a variable electronic component as claimed in claim 1 including, a. guide means on the support means, b. said movable member operatively associated with the guide means to prevent relative sidewise movement of the movable member during adjustment thereof.

Claim 5

Dependent Claim 54 words

In a variable electronic component as claimed in claim 1 wherein, a. the contact means is U-shaped and is stressed to coact with the support means in holding said movable member in adjusted position. b. said movable means to be forced into engagement with the U-shaped contact means to move it into adjusted position.

Claim 6

Dependent Claim 124 words

In a variable electronic component as claimed in claim 1 wherein a. said contact means is substantially U-shaped having a bent portion and continuous therewith a pair of spaced leg means normally having the free ends thereof in compression relationship to each other. b. at least one of said leg means connected to the electronic circuit and forming a flat planar surface in assembled position, c. the other of said leg means of the contact means having an upturned engaging face to permit said movable means to be forced into engagement with said U-shaped contact means, d. and said U-shaped contact means to maintain at least one facE of said movable means in snug engagement with the leg means forming the flat planar surface.

Claim 7

Dependent Claim 34 words

In a variable electronic component as claimed in claim 3 wherein the U-shaped contact means is provided with guide means, and said movable means having a guide member disposed to engage the guide means.

Claim 8

Dependent Claim 44 words

In a variable electronic component as claimed in claim 1 wherein, a. guide means are formed on said support means, b. and said movable means is operatively associated with the guide means to prevent relative sidewise movement of the movable member during adjustment thereof.

Claim 9

Dependent Claim 44 words

In a variable electronic component as claimed in claim 7 wherein the guide means comprise spaced side members connected to opposite sides of the support means, and the movable means has a width to just clear the inner walls of the responsive side members.

Claim 10

Dependent Claim 29 words

In a variable electronic component as claimed in claim 1 wherein the impedance means characteristic is established by a dielectric coating on the inner surface of the contact means.

Claim 11

Dependent Claim 159 words

In a variable electronic component as claimed in claim 1 wherein, a. the support means is substantially U-shaped having a bent portion and continuous therewith a pair of spaced legs normally having the free ends in compression relation to each other, b. one of the legs of said U-shaped support means connected to the electronic circuit and forming a flat planar surface, c. said movable means substantially U-shaped in cross section and having a bent portion and continuous therewith a pair of spaced legs at least one of which forms a flat planar surface disposed in assembled position to fit between legs of said support means and to engage the associate leg of said support means having the flat planar surface, d. and a contact shoe formed on the end of the leg of said movable means disposed between the legs of said support means to provide continuous electrical contact therewith in all adjusted positions of the movable member.

Claim 12

Dependent Claim 39 words

In a variable electronic component as claimed in claim 9 including guide means on said support means, and said movable means disposed to coact with the guide means to prevent sidewise movement of the movable means during adjustment thereof.

Claim 13

Dependent Claim 30 words

In a variable electronic component as claimed in claim 11 wherein the guide means include spaced side members connected normal to one of the legs of said U-shaped support means.

Claim 14

Dependent Claim 56 words

In a variable electronic component as claimed in claim 11 wherein the guide means include a pair of spaced longitudinally extending arms connected to one of the legs of said U-shaped support means, and a finger means on said movable member disposed to fit into and be guided by the space between said pair of arms.

Claim 15

Dependent Claim 29 words

In a variable electronic component as claimed in claim 13 wherein the impedance means characteristic is established by a dielectric coating on the coacting surface of the contact means.

Claim 16

Dependent Claim 34 words

In a variable electronic component as claimed in Claim 13 wherein the impedance means characteristic is established by a dielectric coating on the coacting surface of at least one leg of the movable means.

Claim 17

Dependent Claim 66 words

In a variable electronic component as claimed in Claim 9 wherein, a. stop means is formed on said support means to limit the adjustable movement of the movable means out of engagement with the contact means, b. and at least one other stop means is formed on the support means to coact with said movable means to limit movement thereof into engagement with the contact means.

Claim 18

Dependent Claim 93 words

In a variable electronic component as claimed in Claim 13 wherein the finger means on the movable member is substantially U-shaped, a. said finger means having a bent portion and an upper leg and a lower leg continuous with the bent portions, b. the lower leg having a contact part at the end adjacent the bent portion and a contact shoe at the end remote from the bent portion, c. said contact part disposed to operatively engage the contact means, d. and said contact shoe in continuous conductive connection with the support means.

Claim 19

Dependent Claim 175 words

The combination with an electronic circuit on a support substrate of a variable electronic component adaptable for use therein comprising: a. at least one conductive contact means connected to one side of the electronic circuit and mounted therewith to the substrate, said contact means having a portion forming a planar surface, b. at least one u-shaped conductive support means connected to the other side of the electronic circuit and mounted therewith to the substrate independent of and in predetermined spaced relation to the contact means, c. movable means electrically connected to and slidably mounted on said support means for adjustable and operable engagement with the planar surface of the contact means, d. means on said support means to normally maintain positive engagement with the movable means to hold the movable means in all given positions of adjustment relative the contact means, and e. means between the planar surface of said contact means and said movable means to provide a desired range of impedance characteristics to said variable electronic component on movement of the movable means.

Claim 20

Dependent Claim 175 words

The combination with an electronic circuit on a support substrate of a variable electronic component adaptable for use therein comprising: a. at least one conductive contact means connected to one side of the electronic circuit and mounted therewith to the substrate, said contact means having a portion forming a planar surface, b. at least one u-shaped conductive support means connected to the other side of the electronic circuit and mounted therewith to the substrate independent of and in predetermined spaced relation to the contact means, c. movable means electrically connected to and slidably mounted on said support means for adjustable and operable engagement with the planar surface of the contact means, d. means on said support means to normally maintain positive engagement with the movable means to hold the movable means in all given positions of adjustment relative the contact means, and e. means between the planar surface of said contact means and said movable means to provide a desired range of impedance characteristics to said variable electronic component on movement of the movable means.

Claim 21

Dependent Claim 57 words

In a variable electronic component as claimed in claim 2 wherein, a. the movable means is u-shaped and is mounted so as to intermesh with the u-shaped support means, b. and the u-shaped support means is stressed to provide the means for maintaining positive engagement of the movable means to hold the same in all adjusted positions.

Claim 22

Dependent Claim 72 words

In a variable electronic component as claimed in claim 19 wherein, a. the contact means is u-shaped and is stressed to coact with the support means for holding said movable member in adjusted position, b. the respective open ends of the u-shaped contact means and the u-shaped support means facing each other, and c. said movable means is forced into engagement with the u-shaped contact means to move it into adjusted position.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-07-25	1976-01-24	1976-07-25	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-07-25	1980-01-24	1980-07-25	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-07-25	1984-01-24	1984-07-25	$7700.00	Window Closed / Lapsed

Trimmer capacitor

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