Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 4787261 | Device for setting a relative rotational position of a gearwheel and a ring gear which are coaxially mounted A device for setting a relative rotational position of a gearwheel and a ring gear disposed coaxially mounted and turnable on an annular extension of the gearwheel includes a plurality of radially extending pressure levers actuatable in common by an axial... | 11/29/1988 |
| 4787262 | Wrist device of robot The present invention relates to the wrist device of a robot which has a speed reducers built in a wrist portion and which attains three degrees of rotating freedom orthogonal to one another, and is characterized in that three transmission shafts penetrat... | 11/29/1988 |
| 4787263 | Automatic self-adjusting cable system An automatic self-adjusting cable system comprising first, second and third cables, each including a conduit and a strand extending through the conduit. A self adjusting mechanism is provided and includes a housing, an inner member movable axially relativ... | 11/29/1988 |
| 4787264 | Remote control with ball bearings in linked ball-cage elements To replace conventional ball-cage strips for remote controls in which push-pull blades slide on ball bearings maintained properly spaced from one another by such strips, a linkable ball-cage element has been developed to form strips of such linked element... | 11/29/1988 |
| 4787265 | Torsion vibrator A plurality of block-shaped electrostrictive elements are arranged while polarization directions are coincident to the same circumferential direction, thereby an electrostrictive element to be grasped by metal members is constituted. These block-shaped el... | 11/29/1988 |
| 4787266 | Adjustable toe clip for bicycle pedals A toe clip for bicycle pedals, comprising a plate of flexible material adapted to be fixed to one side of a bicycle pedal body and extending forward and then being bent rearward to enclose the toe of a shoe. A strap is surrounded by an eyelet secured to t... | 11/29/1988 |
| 4787267 | Differential axle reduction gear housing A one-piece axle housing contains an input shaft, an intermediate shaft, a differential gear assembly, and a pair of coaxially arranged axle shafts, all of which are aligned parallel to one another. The housing accommodates either a spur or helical gear s... | 11/29/1988 |
| 4787268 | Step change-speed transmission with centrifugal clutch Stepwise change-speed transmission between the engine and the drive shafts of the driven wheels of a motor vehicle including expansible driving and driven pulleys supported respectively by a main shaft and a driven shaft, and a friction clutch mounted on ... | 11/29/1988 |
| 4787269 | Power transmitting system for a four-wheel drive vehicle A planetary gear device is provided in a power transmitting system. First and second clutches are provided on a front drive shaft and a rear drive shaft respectively. One of members of the planetary gear device is operatively connected to the front drive ... | 11/29/1988 |
| 4787270 | Robotic manipulator An improved robotic manipulator of the type having a plurality of serially-connected drive shafts and a mounting surface affixed to one end thereof. The manipulator includes a first shaft rotatable about a first axis coincident with one ordinate of a mutu... | 11/29/1988 |
| 4787271 | Gear box A two speed gear box employs a planetary gear mechanism in which the planet carrier is in the form of a pinion gear which drives the second stage of the gear box. The gear box includes hydraulically actuated clutches which, in high gear, selectively lock ... | 11/29/1988 |
| 4787272 | Hydraulic pressure control apparatus for use in automatic transmission In a hydraulic control system for a vehicle transmission including a first throttle valve for producing a first throttle pressure for boosting a line pressure valve and a second throttle valve for producing a second throttle pressure for shifting speed st... | 11/29/1988 |
| 4787273 | Wrench retaining device A wrench retaining clip mounts on the shank of a wrench and is operative to retain a working head of the wrench in an engaged position on a nut or bolt head of a threaded bolt. The clip includes a channel-shaped yoke which extends partially around the wre... | 11/29/1988 |
| 4787274 | Installing tool for wedging-type fasteners An installing tool having two way drive wrench portion particularly suited for installing wedge-locking type aircraft fasteners. The wrench portion is adapted to be installed on a driving tool. The wrench portion has at least a forwardly and a rearwardly ... | 11/29/1988 |
| 4787275 | Adjustable double-ended box wrench An adjustable double-ended box wrench (10,10') is disclosed as including a wrench body (12) defining large and small box wrenches (20,22), an adjustable jaw assembly (14,14') including an elongated adjusting member (54,54') and a rotatable adjuster (56) t... | 11/29/1988 |
| 4787276 | Tool handle with interchangeable blades and alternate orientation A hand tool for transmitting torque having a handle wherein a tool implement blade may be alternately mounted in three positions on the handle. A slot defined at one end of the handle permits the implement having a shaped head fixed thereon to be mounted ... | 11/29/1988 |
| 4787277 | Sliding ratchet wrench The headed end of a wrench body of elongated rectangular form includes a first stationary jaw defining a first gripping surface. A slide mount foot projects from the body opposite the stationary jaw, and is spaced therefrom. It includes a flat bearing sur... | 11/29/1988 |
| 4787278 | Tool bit driver with spring retainer In a tool bit driver, a body suitable for mounting on a square drive of a socket wrench is provided with a bit socket adapted for receiving a tool bit at one end of the body, and diametrically opposed grooves are formed to extend longitudinally within the... | 11/29/1988 |
| 4787279 | Tool of the pliers-type A tool with two elongated handles and two jaws operatively connected to the handles is provided with a mechanism for preventing premature opening of the handles and jaws. The mechanism comprises a pawl operating as a bistable rocker and engaging, with one... | 11/29/1988 |
| 4787280 | Apparatus for machining workpieces and method therefor During operation of an apparatus to machine a workpiece, an unfinished workpiece is gripped by a workpiece loader and unloader assembly at a conveyor station. The loader and unloader assembly moves the workpiece along the axis of a spindle assembly throug... | 11/29/1988 |
| 4787281 | Method of dividing logs of heated metal into billets and apparatus for use in the method A method and apparatus for dividing metal logs into billets is disclosed. The apparatus includes a furnace, a shear spaced from the furnace, and a guide-pusher system for moving the logs relative to the furnace and shear. Using this apparatus, a first log... | 11/29/1988 |
| 4787282 | Method and apparatus for forming by punching A method and apparatus for forming planar parts (WA) by progressively punching out the shape of the part (WA) from a piece of sheet material (W) in which the part (WA) is automatically removed from the remaining sheet material (W), by a hinged trap door s... | 11/29/1988 |
| 4787283 | Metal stud and channel cornering die A die body is provided defining a longitudinal channel therethrough including the cross-sectional shape of a metal stud to be cut and an opening is formed through the die body extending normal to the web of the channel and including a first arm portion ex... | 11/29/1988 |
| 4787284 | Cutting apparatus for wrap film An improved cutting apparatus for all household plastic wrap film comprises a sliding saddle mounted in a guiding track slot on the top of a cardboard dispenser box. Since the sliding saddle is mounted with a safety razor, the wrap film can be cut into a ... | 11/29/1988 |
| 4787285 | Anchor bolt device for tremold device An anchor bolt device for a tremolo device which is constructed so that a bolt is thread-fitted to a bottomed and threaded tube which is buried to be open upwardly in a stringed instrument, said bolt being provided at its top part with a groove for securi... | 11/29/1988 |
| 4787286 | Snare mechanism for a drum In construction of a drum having a cylindrical stem and fore side and rear side drum heads attached to both open ends of the stem, a snappy is arranged within said stem facing the inner surface of the fore side drum head with an adjustable clearance and a... | 11/29/1988 |
| 4787287 | Automatic cannon having an ammunition-receiving device In an automatic weapon having a wedge-type breech 6, a linearly advancing and retracting feed finger 5 is provided to transport caseless ammunition 4 into the cartridge chamber 10a of the gun barrel 10, with the feed finger pushing against the rear face o... | 11/29/1988 |
| 4787288 | Rapid fire trigger activator A Rapid Fire Trigger Activator and accessory gun stock used to convert any semi-automatic carbine, rifle, or shot gun to nearly the firing capability of an automatic weapon which includes, a main side plate, having a pivot pin; a slide tube; a fore end ha... | 11/29/1988 |
| 4787289 | Bullet trap An improved bullet trap effective to stop and retain bullets fired from a firearm and enabling the recovery of such bullets in a reuseable condition. The bullet trap includes an elongate tubular housing defining a chamber open at each end, and a pair of c... | 11/29/1988 |
| 4787290 | Support apparatus for a grenade thrower tube A support apparatus for a grenade thrower tube comprises a height adjustment assembly that raises and lowers the tube along a vertical axis and a sideways adjustment assembly that moves the tube back-and-forth in a direction transverse to the vertical axi... | 11/29/1988 |
| 4787291 | Gun fire control system A fire control system (10) for a gun (12) pivotally mounted in elevation and in azimuth employs optical sighting of a target (16) manually via a telescope (26) fixedly directed substantially parallel to an axis of the gun (12). A laser range finder (24) d... | 11/29/1988 |
| 4787292 | Brake booster The invention relates to a locking arrangement for a key member used in a brake booster. A key member includes an arcuate portion which surrounds substantially one-half the perimeter of a valve body, and engaging recesses are formed at the opposite ends o... | 11/29/1988 |
| 4787293 | Hydraulic system for working vehicles A hydraulic system for raising and lowering a working machine in a working vehicle such as agricultural tractors, which comprises a hydraulic cylinder, a hydraulic pump, an oil tank, a manual valve shiftable between three positions: a stationary position ... | 11/29/1988 |
| 4787294 | Sectional flow control and load check assembly A flow control and load check valve in a spool valve between a first power core (20) and the motor ports (22,24,26) for controlling the flow therebetween as a function of the differential pressure of the first power core and the inlet pressure. A piston (... | 11/29/1988 |
| 4787295 | Piston for internal combustion engines Piston for internal combustion engines, with an oil scraper ring disposed in an annular groove at the circumference of its head portion. The outer edge of the annular groove adjacent to the piston skirt which adjoins the head portion is bevelled to form a... | 11/29/1988 |
| 4787296 | Ventilated soundproof glass Ventilated soundproof glass including at least two sheets of glass and one sheet of plastic film in between. These two sheets of glass and the sheet of plastic film have holes arranged in them. The sides of the two sheets of glass adjacent to the sheet of... | 11/29/1988 |
| 4787297 | Stacked robotic work cell process station A stacked robotic work cell process station is provided which includes first and second module chambers (14) and (26) which have associated therewith work surfaces (10) and (22). The first module chamber (14) is disposed above the work surface (22) in the... | 11/29/1988 |
| 4787298 | Method and apparatus to consolidate room and point exhaust with a single fan Ambient and localized sites within a room space are exhausted as required into a single fan unit and exhaust main. Flexible ducts connected to the main are positionable at various site locations and when one is used to for effecting exhaust at a site, the... | 11/29/1988 |
| 4787299 | Detection and display device for automatic service expresso coffee machine The invention concerns a detection and display device for automatic service expresso coffee machine which automatically outputs and displays water or ground coffee doses according to the capacity of the filter-holder bowl engaged on the bowl-holder of the... | 11/29/1988 |
| 4787300 | Apparatus for continuously cooking and/or dehydrating foodstuffs The invention concerns a process and an apparatus for the continuous heat treatment of foodstuffs. Unlike in known cooking or boiling installations with a substantially homogeneous temperature control of the heat carrier in the form of water, a multizone ... | 11/29/1988 |
