Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7100314 | Plow blade float attachment A plow blade float attachment for preventing damage to a side deflector on a plow blade. The plow blade float attachment includes an arm member pivotally attached to a deflector member of a plow blade, a contact member attached to the arm member, a guide member atta... | 09/05/2006 |
| 6896069 | Roll-over disk plow A base frame for a roll-over disc plow can be symmetrical about a longitudinal axis and can be adapted to be secured to a standard tractor hitch. A plow frame can overlay and be pivoted to the base frame about the longitudinal axis. The plow frame can be hydraulical... | 05/24/2005 |
| 6116351 | Multiple section reversible plough A reversible plough to be towed behind a propelling vehicle has a forward section with a number of pairs of reversible plough bodies and a rear section also having a number of reversible plough bodies. The forward section and rear section are coupled toge... | 09/12/2000 |
| 5701960 | Reversible Plough A reversible plough, that in one embodiment is of the semi-mounted type, and comprises a main beam, a coupling structure at the forward end of the main beam, and a carrying beam. Pairs of plough bodies are mounted along the length of the carrying beam. Th... | 12/30/1997 |
| 5685378 | Multiple section reversible plough A reversible plough (10) which is intended to be mounted on and towed behind a propelling vehicle, and which comprises a forward section (11) with reversible plough bodies, a rear section (13), and an intermediate wheel supported section (12, 112) which s... | 11/11/1997 |
| 5603381 | Multi-share plough There is disclosed a semi-mountable plough comprising an elongate plough frame having a long forward frame section (1) carrying a plurality of plough bodies (2), a short intermediate section (3) pivotally connected to the rear end of the forward section (... | 02/18/1997 |
| 5381866 | Multi-share plough There is disclosed a semi-mountable plough comprising an elongate plough frame having a long forward frame section (1) carrying a plurality of plough bodies (2), a short intermediate section (3) pivotally connected to the rear end of the forward section (... | 01/17/1995 |
| 5267618 | Bidirectional plow with rotatable tool bar A main frame is secured to a tractor for towing wherein the main frame is tilted as the tractor tilts to one side or the other of the path of travel A ball and socket joint suspends the tool bar by its central portion from the main frame so that the tool ... | 12/07/1993 |
| 4896731 | Reversible semi-mounted plow with a lockable articulation A multifurrow reversible semi-mounted plough comprising a large number of plough-bodies fixed on a beam. The beam is constituted by at least two elements (12) connected two by two via an articulation (13) about an axis (16), horizontal in the working posi... | 01/30/1990 |
| 4825955 | Plough reversing method Reversing method, particularly for semi-reversible ploughs, where the reversing mechanism includes hydraulic reversing cylinders (10, 11). The reversing mechanism, or device (5) to be reversed, includes a lifting arm (8) which at its one end is rotatably ... | 05/02/1989 |
| 4778013 | Plow with adjustable moldboard A frame beam supports a plurality of plow bodies, the front plow body of which has a one-piece moldboard and is pivotable about an upwardly extending axis. Part of the moldboards of each of the following plow bodies is pivotable about an upwardly extendin... | 10/18/1988 |
| 4691785 | Reversible plow and carriage There is disclosed a carriage for an agricultural implement, particularly for a reversible plow, in which the wheels at each side of the carriage are mounted to the carriage with forks which are pivotally received on a main axle and which have lift arms i... | 09/08/1987 |
| 4646849 | Reversible plough having a reversing and adjustment mechanism A reversing and adjustment mechanism, especially for a reversible plough adapted for hydraulically adjustable furrow width and hydraulic reversing of the plough, wherein the reversing and adjustment mechanism comprises a hydraulic cylinder (8) with a "hyd... | 03/03/1987 |
| 4640367 | Roll-over disc plow A base frame for a roll-over disc plow is symmetrical about a longitudinal axis and is adapted to be secured to a standard tractor hitch. A plow frame overlies and is pivoted to the base frame about the longitudinal axis. The plow frame is hydraulically m... | 02/03/1987 |
| 4603745 | Plough reversing mechanism Reversing mechanism, particularly for semi-reversible ploughs, where the reversing mechanism includes hydraulic reversing cylinders (10, 11). The reversing mechanism, or device (5) to be reversed, includes a lifting arm (8) which at its one end is rotatab... | 08/05/1986 |
| 4577698 | Variable width two-way gang plow A two-way gang plow is provided with a main support frame arranged for connection to a conventional three point hitch of a tractor. The forwardmost pair of plow bottoms are secured in fixed position on a portion of the roll-over plow frame that is fixed a... | 03/25/1986 |
| 4519461 | Two-way plow with offset trips A plow that has a plurality of equally spaced right hand plows and left hand plows that are mounted one above the other on a beam of the plow support structure. Each right hand plow has trip linkage that is offset from the trip linkage of the left hand pl... | 05/28/1985 |
| 4415040 | Fully mounted variable width plow A fully mounted variable width plow of the roll-over type or not in which the tractor hitch links are pivoted about generally vertical axes permitting the hitch limited movement in a horizontal plane, which will allow the adjusted plow to maintain correct... | 11/15/1983 |
| 4382473 | Soil cultivating machine A soil cultivating machine such as a plow comprises a share followed by a soil guide which is in the form of a moldboard made up of power driven rotary guide elements. The elements are elongated and are all driven from a common shaft which can include a c... | 05/10/1983 |
| 4341148 | Hydraulic sequencing valve There is disclosed a new and improved hydraulic sequencing valve of the type which includes a movable valve spool within the body to sequence operation of the valve. An aperture through one spool or chamber is arranged for direct fluid communication with ... | 07/27/1982 |
| 4316507 | Reversible plow A frame of a reversible plow having plow shares that are directed to the right and to the left. The frame is turned by means of a piston connected to a turning shaft of the frame, the turning of the cylinder being controlled by an automatic reversing valv... | 02/23/1982 |
| 4273197 | Reversible ploughs A reversible plough has a double acting hydraulic ram connected between the headstock and the reversing spindle to reverse the plough frame from a left handed to a right handed ploughing position, and vice versa. Hydraulically operating mechanism is provi... | 06/16/1981 |
| 4207951 | Two-way, multiple bottom plow with lift assist An improved two-way, multiple bottom plow is described. The plow is provided with an hydraulically actuated lift assist mechanism which works in conjunction with the tractor hitch to lift the plow out of the plowing position. A hydraulic system is provide... | 06/17/1980 |
| 4206685 | Hydraulic turning device for a turn plow A hydraulic turning device for a turn plow comprises a substantially upright double acting cylinder having a piston dividing the cylinder into an upper and a lower compartment and being operatively connected to the turn plow for turning the latter in two ... | 06/10/1980 |
| 4165787 | Invertible plow construction A plow construction including a frame extending rearward from a tractor and swingable up and down relative to the tractor, a rear frame part being swingable with the frame and rotatable relative thereto about a forward and rearward axis, plow discs carrie... | 08/28/1979 |
| 4154306 | Reversible ploughs A reversible plough has a headstock, a plough frame and a reversing spindle secured to the frame and rotatable in the headstock. A stop member rotatable about the reversing spindle is provided with two adjustable stops to enable the two ploughing position... | 05/15/1979 |
| 4150723 | Rollover apparatus for plows A rollover mechanism for pivoting the plow frame of a two-way gang plow between alternate operative field positions angularly spaced 180 degrees apart relative to a center axis on a supporting three point hitch framework. The plow frame is further positio... | 04/24/1979 |
| 4067396 | Roll-over mechanism for two-way plow Mechanism operating through a mechanical advantage for rolling over a two-way gang plow comprises a pair of hydraulic cylinders acting through respective short links connected pivotally at one of their ends to their associated cylinders and at their oppos... | 01/10/1978 |
| 3980141 | Moldboard plow A five, six, or seven bottom two-way reversible moldboard plow is made to be attached by a standard three-point hitch on a tractor and lifted by the hitch without the aid of a trailing wheel. This is accomplished by mounting the plow as far forward as pos... | 09/14/1976 |