US3760882A — Full hydraulic earth working implement

Claim 1

Independent Claim 316 words

In an earth working implement having a beam, the combination of: support means secured to the beam and projected rearwardly therefrom, a movable linkage comprising link means pivotally connected to the support means for movement about an axis transverse of the beam and a generally upright standard pivotally connected to the link means for movement about an axis transverse of the beam, stop means engageable with said standard to limit movement thereof in a forward direction, an earth working tool mounted on a lower portion of said standard, said tool being in a normal ground working position when said standard is in engagement with said stop means, coacting guide means on said standard and support means for directing movement of the standard along a path upwardly and rearwardly away from the stop means guiding the tool between the ground working position and the release position without allowing any portion of the tool to go below the ground working position of the tool, and force storing and transmitting means for continuously biasing the standard into engagement with the stop means, said force storing and transmitting means including a hydraulic ram means having first and second relatively movable members, means pivotally connecting one of said members of the ram means to the link means above said transverse axes, means connecting the other member to the support means, and means for continuously supplying the ram means with hydraulic fluid under pressure to allow the tool to move rearwardly and upwardly to a release position when striking an obstruction against the continuous force of the hydraulic pressure in the ram means and to continuously force the tool back to ground working position in the path determined by the coacting guide means as soon as the tool passes over the obstruction, said force storing and transmitting means being the sole means holding the standard and tool in its ground working position.

Claim 2

Dependent Claim 316 words

In an earth working implement having a beam, the combination of: support means secured to the beam and projected rearwardly therefrom, a movable linkage comprising link means pivotally connected to the support means for movement about an axis transverse of the beam and a generally upright standard pivotally connected to the link means for movement about an axis transverse of the beam, stop means engageable with said standard to limit movement thereof in a forward direction, an earth working tool mounted on a lower portion of said standard, said tool being in a normal ground working position when said standard is in engagement with said stop means, coacting guide means on said standard and support means for directing movement of the standard along a path upwardly and rearwardly away from the stop means guiding the tool between the ground working position and the release position without allowing any portion of the tool to go below the ground working position of the tool, and force storing and transmitting means for continuously biasing the standard into engagement with the stop means, said force storing and transmitting means including a hydraulic ram means having first and second relatively movable members, means pivotally connecting one of said members of the ram means to the link means above said transverse axes, means connecting the other member to the support means, and means for continuously supplying the ram means with hydraulic fluid under pressure to allow the tool to move rearwardly and upwardly to a release position when striking an obstruction against the continuous force of the hydraulic pressure in the ram means and to continuously force the tool back to ground working position in the path determined by the coacting guide means as soon as the tool passes over the obstruction, said force storing and transmitting means being the sole means holding the standard and tool in its ground working position.

Claim 3

Dependent Claim 32 words

The structure defined in claim 1 wherein: said means for supplying hydraulic fluid includes an accumulator charged with fluid under pressure and means fluidly connecting the accumulator with the hydraulic ram means.

Claim 4

Dependent Claim 68 words

The implement of claim 1 wherein: the support means comprises a pair of spaced upright plate means secured to opposite sides of the beam, said link means and part of the standard located between the spaced upright plate means, said coacting guide means comprising upright curved rails secured to the plate means and roller means riding on the rails rotatably mounted on the opposite sides of the standard.

Claim 5

Dependent Claim 19 words

The implement of claim 1 including: clamp means for holding the support means in assembled relation with the beam.

Claim 6

Dependent Claim 28 words

The implement of claim 1 inCluding: block means secured to the beam, said support means cooperating with the block means to position the support means on the beam.

Claim 7

Dependent Claim 29 words

The structure defined in claim 1 wherein: said link means has an upwardly directed arm, said one of said members of the ram means being connected to the arm.

Claim 8

Dependent Claim 43 words

The implement of claim 1 including: clamp means for holding the support means in assembled relation with the beam, said clamp means including upright bolt means and eccentric washer means surrounding the bolt means to horizontally clamp the support means on the beam.

Claim 9

Dependent Claim 238 words

In an earth working implement having a substantially horizontal beam, the combination of: upright plate means secured to said beam, stop means secured to a portion of said plate means, a generally upright standard positioned adjacent said upright plate means, link means pivotally connected to the upper end portion of the standard, extended forwardly therefrom, and pivotally connected to said upright plate means, an earth working tool mounted on the lower portion of said standard, coacting guide means on said standard and upright plate means for directing the movement of the standard along a path upwardly and rearwardly toward and away from the stop means whereby the tool moves between a ground working position and a release position without allowing any portion of the tool to go below the working position, power means for storing and transmitting force operable to continuously bias the standard into engagement with the stop means and yieldably hold the standard in engagement with the stop means, said power means having first and second relatively movable elements, and means connecting one of the elements with the link means generally above the pivotal connection of the link means with the standard whereby the power means yieldably holds the tool in ground working position and allows the tool to be moved toward the release position when striking an obstruction and forces the tool to ground working position as soon as the tool passes over the obstruction.

Claim 10

Dependent Claim 238 words

In an earth working implement having a substantially horizontal beam, the combination of: upright plate means secured to said beam, stop means secured to a portion of said plate means, a generally upright standard positioned adjacent said upright plate means, link means pivotally connected to the upper end portion of the standard, extended forwardly therefrom, and pivotally connected to said upright plate means, an earth working tool mounted on the lower portion of said standard, coacting guide means on said standard and upright plate means for directing the movement of the standard along a path upwardly and rearwardly toward and away from the stop means whereby the tool moves between a ground working position and a release position without allowing any portion of the tool to go below the working position, power means for storing and transmitting force operable to continuously bias the standard into engagement with the stop means and yieldably hold the standard in engagement with the stop means, said power means having first and second relatively movable elements, and means connecting one of the elements with the link means generally above the pivotal connection of the link means with the standard whereby the power means yieldably holds the tool in ground working position and allows the tool to be moved toward the release position when striking an obstruction and forces the tool to ground working position as soon as the tool passes over the obstruction.

Claim 11

Dependent Claim 27 words

The implement of claim 8 wherein: said link means has generally upright arm means, said means connecting one of the elements being mounted on the arm means.

Claim 12

Dependent Claim 13 words

The implement of claim 8 wherein: said power means includes a hydraulic cylinder.

Claim 13

Dependent Claim 60 words

The implement of claim 8 wherein: said upright plate means comprises a pair of spaced upright plates secured to opposite sides of the beam, said link means and part of the standard located between the spaced plates, said coacting guide means comprising curved rails secured to the plates and roller means riding on the rails rotatably mounted on the standard.

Claim 14

Dependent Claim 247 words

In an earth working implement having a beam, the combination of: support means attachable to the beam and projected rearwardly therefrom, linkage means including a pair of pivotally connected members positioned adjacent the support means, means pivotally connecting one of the members to the support means for movement about an axis generally transverse of the support means, arm means secured to said one of the members of the linkage means, an earth working tool mounted on the other of the members, said tool being movable to a normal ground working position and to a release position, force storing and transmitting means for continuously biasing the tool to the ground working position, said force storing and transmitting means including hydraulic ram means having first and second relatively movable elements and means pivotally connecting one of the movable elements of the ram means to the arm means above said transverse axis and the other element to the support means, said ram means connectable to means for continuously supplying the ram means with hydraulic fluid under pressure, coacting guide means on the support means and one of the members for directing movement of the tool upwardly and rearwardly away from the ground working position to the release position without allowing any portion of the tool to go below the ground workinG position of the tool against the force of the force storing and transmitting means, said force storing and transmitting means continuously biasing the tool to the ground working position.

Claim 15

Dependent Claim 247 words

In an earth working implement having a beam, the combination of: support means attachable to the beam and projected rearwardly therefrom, linkage means including a pair of pivotally connected members positioned adjacent the support means, means pivotally connecting one of the members to the support means for movement about an axis generally transverse of the support means, arm means secured to said one of the members of the linkage means, an earth working tool mounted on the other of the members, said tool being movable to a normal ground working position and to a release position, force storing and transmitting means for continuously biasing the tool to the ground working position, said force storing and transmitting means including hydraulic ram means having first and second relatively movable elements and means pivotally connecting one of the movable elements of the ram means to the arm means above said transverse axis and the other element to the support means, said ram means connectable to means for continuously supplying the ram means with hydraulic fluid under pressure, coacting guide means on the support means and one of the members for directing movement of the tool upwardly and rearwardly away from the ground working position to the release position without allowing any portion of the tool to go below the ground workinG position of the tool against the force of the force storing and transmitting means, said force storing and transmitting means continuously biasing the tool to the ground working position.

Claim 16

Dependent Claim 72 words

The implement of claim 12 wherein: said support means include a pair of spaced upright plate means mounted on the beam, said pair of pivotally connected members being partially located between said plate means, said coacting guide means comprising curved upright rails secured to the facing sides of the plate means in alignment with each other and roller means riding on the rails rotatably mounted on one of the pair or members.

Claim 17

Dependent Claim 34 words

The implement of claim 12 wherein: said means for continuously supplying hydraulic fluid under pressure includes an accumulator charged with fluid under pressure, and means fluidly connecting the accumulator with the hydraulic ram means.

Claim 18

Dependent Claim 27 words

The implement of claim 12 wherein: said coacting guide means comprise upwardly and rearwardly directed track means and roller means operable to ride on the track means.

Claim 19

Dependent Claim 19 words

The implement of claim 12 including: clamp means for holding the support means in assembled relation with the beam.

Claim 20

Dependent Claim 43 words

The implement of claim 12 including: clamp means for holding the support means in assembled relation with the beam, said clamp means including upright bolt means and eccentric washer means surrounding the bolt means to horizontally clamp the support means on the beam.

Claim 21

Dependent Claim 47 words

The implement of claim 12 wherein: the support means comprises a frame unit having an upper portion and a lower portion located adjacent opposite sides of the beam and clamp means cooperating with the upper portion and lower portion to hold the frame unit on the beam.

Claim 22

Dependent Claim 19 words

The implement of claim 13 including: clamp means for holding the plate means in assembled relation with the beam.

Claim 23

Dependent Claim 28 words

The implement of claim 19 including: block means secured to the beam, said plate means cooperating with the block means to position the support means on the beam.

Claim 24

Dependent Claim 28 words

The implement of claim 16 including: block means secured to the beam, said support means cooperating with the block means to position the support means on the beam.

Claim 25

Dependent Claim 28 words

The implement of claim 18 including: block means secured to the beam, said frame unit cooperating with the block means to position the frame unit on the beam.

Claim 26

Dependent Claim 16 words

The implement of claim 18 wherein: the frame unit has a pair of generally upright plates.

Claim 27

Dependent Claim 38 words

The implement of claim 18 wherein: the clamp means includes upright bolt means connecting the upper portion and the lower portion and eccentric washer means surrounding the bolt means to horizontally clamp the frame unit on the beam.

Claim 28

Dependent Claim 248 words

In an earth tillage implement: a frame, a ground working tool; mounting means connecting said tool to said frame for substantially free, unobstructed movement away from an operating ground-penetrating position toward a fully elevated position above the ground, said mounting means having movable means including a standard secured to the tool, and forwardly projected means secured to the upper portion of the standard and stationary means mounting the forwardly projecting means on the frame, and guide means for guiding said tool during movement between said positions, said stationary means and guide means including first and second guides on said stationary means and first and second follower means on said movable means cooperating respectively with said first and second guides so that when the tool strikes an obstruction it will move rearwardly and upwardly along a fixed path without allowing any portion of the tool to go below its normal earth working depth to clear the obstruction, biasing means having one portion connected to the movable means and a second portion connected to the stationary means for continuously biasing said tool toward said operating ground penetrating position in all positions of said tool, for continuously yielding resisting meovement of said tool away from said ground penetrating position, anD for continuously returning said tool to said ground penetrating position after movement away therefrom, and means pivotally mounting the second portion of the biasing means to the stationary means at an elevation higher than the elevation of the forwardly projected means.

Claim 29

Dependent Claim 248 words

In an earth tillage implement: a frame, a ground working tool; mounting means connecting said tool to said frame for substantially free, unobstructed movement away from an operating ground-penetrating position toward a fully elevated position above the ground, said mounting means having movable means including a standard secured to the tool, and forwardly projected means secured to the upper portion of the standard and stationary means mounting the forwardly projecting means on the frame, and guide means for guiding said tool during movement between said positions, said stationary means and guide means including first and second guides on said stationary means and first and second follower means on said movable means cooperating respectively with said first and second guides so that when the tool strikes an obstruction it will move rearwardly and upwardly along a fixed path without allowing any portion of the tool to go below its normal earth working depth to clear the obstruction, biasing means having one portion connected to the movable means and a second portion connected to the stationary means for continuously biasing said tool toward said operating ground penetrating position in all positions of said tool, for continuously yielding resisting meovement of said tool away from said ground penetrating position, anD for continuously returning said tool to said ground penetrating position after movement away therefrom, and means pivotally mounting the second portion of the biasing means to the stationary means at an elevation higher than the elevation of the forwardly projected means.

Claim 30

Dependent Claim 26 words

The tillage implement of claim 25 wherein: said biasing means includes a hydraulic cylinder having its piston rod connected to said movable means mounting said tool.

Claim 31

Dependent Claim 37 words

The tillage implement of claim 25 wherein: said first guide includes an upwardly curved track on the stationary means, and said first follower means includes a roller mounted on the movable means and engageable with said track.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-09-24	1977-03-26	1977-09-25	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-09-24	1981-03-26	1981-09-25	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-09-24	1985-03-26	1985-09-25	$7700.00	Window Closed / Lapsed

Full hydraulic earth working implement

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