Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 4685151 | Motorcycle safety apparel Motorcycle safety apparel is disclosed which may be made in stylish and unencumbering designs to encourage regular use by motorcycle riders, and the like, which in the event of an impending or actual accident will inflate to provide a protective enclosure... | 08/11/1987 |
| 4685152 | Insect protective garment A garment to protect the user against insect bites, including an insect-impervious yoke extending from the neckhole across the shoulders and down into the chest and back area, having piping sewn to the bottom edges of the yoke to hold away from the body o... | 08/11/1987 |
| 4685153 | Athletic knee protector An athletic knee protector having a flexible aluminum shield which wraps around the kneecap and sides of the knee and is held in place at the kneecap by fitting within a pocket sewn within stretch pants and by having straps which are attached to the pants... | 08/11/1987 |
| 4685154 | Apron and infant towel An infant towel and particularly a method for its use beginning with it being worn by the adult user and ending with it being completely wrapped around the infant. This apron-towel has substantially identical front and rear rectangular absorbant panels. T... | 08/11/1987 |
| 4685155 | Composite insulation material A composite sheet material for garments and the like is disclosed. The composite sheet material comprises a substantially continuous internal layer of porous material having low heat conductivity and high resilience. The internal layer is of a substantial... | 08/11/1987 |
| 4685156 | Adjustable water temperature safety control unit An adjustment water temperature safety control unit (40) includes a pair of control valves (42, 44) interconnected by meshed control gears (100, 106) for opposite inversely proportional actuation responsive to a single control knob (78). The desired maxim... | 08/11/1987 |
| 4685157 | Toilet aid A toilet aid comprises a rear fixing bracket for mounting on a WC pan using the normal seat-attachment bolt holes of the latter. Two identical side support structures of inverted U-shape each provides a side user support arm, a front support leg and a rea... | 08/11/1987 |
| 4685158 | Swimming pool control system A control system for automatically maintaining a predetermined water level in a swimming pool includes a multi-contact water level sensor unit mounted on an exposed sidewall of the pool. The sensor unit is vertically adjustable within a stationary mountin... | 08/11/1987 |
| 4685159 | Hospital bed A hospital bed which includes a bed frame consisting of a center bed frame section and of a head bed frame section and foot bed frame section pivotal relative to the center bed frame section; the bed frame is supported relative to a chassis by way of a fi... | 08/11/1987 |
| 4685160 | Portable bed assembly A portable three piece bed assembly is disclosed comprising a foldable spring deck adapted to be easily mounted on a frame assembly which further separates into two pieces to permit easy assembly, disassembly, and transportation of the bed assembly unit b... | 08/11/1987 |
| 4685161 | Foldable framework and portable objects having such a framework A foldable framework and foldable objects such as stretchers, foldable beds, foldable bridges and the like embodying such framework. The framework comprises first and second carrier rod assemblies linked to each other by foldable connecting means, each su... | 08/11/1987 |
| 4685162 | Box spring having improved coil spring modules A box spring for supporting a bedding mattress. The box spring includes a rectangular base frame, a plurality of modular spring elements mounted atop the base frame, and a wire grid mounted atop the modular spring elements. Each of the modular spring elem... | 08/11/1987 |
| 4685163 | Recliner for medical convalescence An air inflatable recliner including: a back and head support extending upwardly at angles between 30 and 45 degrees, comprised of individually shaped, air inflatable, cushions interconnected together; which back and head support is interconnected togethe... | 08/11/1987 |
| 4685164 | Air brake adjustment tool This brake adjustment tool is for adjusting air brakes of automotive vehicles, and is a dual purpose tool that enables one man to properly adjust such brakes. Primarily, it consists of an elongated handle or main body having an opening for receiving a soc... | 08/11/1987 |
| 4685165 | Hair brush A hair brush having bristles attached to a member which is rotatable with respect to a handle, together with a method of making and assembling a hair brush comprised of only two separate members, is disclosed. A surface on the member is provided between t... | 08/11/1987 |
| 4685166 | Apparatus for washing vehicles including plastic bearings An apparatus for washing vehicles having pivotable arms secured to bearings formed of high molecular weight plastic which are mounted on a shaft. The bearings are formed from a unitary block of high molecular weight plastic and have cylindrical bores whic... | 08/11/1987 |
| 4685167 | Mop construction An improved dust mop with a strip of material attached thereto having loops on the underside thereof to engage a strip of material with hooks thereon. The strip of material with hooks is mounted on top of a mop holder and the strip of looped material enga... | 08/11/1987 |
| 4685168 | Windshield cleaning system The invention concerns a system for keeping windshield wiper blades free of ice or snow accumulation. A rectangular strip of transparent material is either affixed to or formed integrally with the windshield to extend outwardly from the surface thereof fo... | 08/11/1987 |
| 4685169 | Vehicle wash and dryer An apparatus for both washing and drying an automotive vehicle. The apparatus includes a track gantry that moves along the track and over the vehicle. Water outlets and brushes are on the gantry to wash the car. The apparatus further includes a blower, no... | 08/11/1987 |
| 4685170 | Bristle component for a floor cleaning nozzle A bristle component is disclosed for a floor cleaning nozzle for vacuum cleaners. The bristle component includes a bristle holding strip mounted to the housing of the nozzle. The holding strip is provided with downwardly extending bristles at the corners ... | 08/11/1987 |
| 4685171 | Guide for a driven endless belt The combination with apparatus, wherein an endless tensioned belt is twisted to form a first loop engaging the unsupported end of a motor shaft and a second loop engaging a rotary element so as to drive same, of a removable barrier to the advancement or c... | 08/11/1987 |
| 4685172 | Bush securing mechanism A bush element for supporting a rod or shaft in a side plate has portion for entry into a generally circular aperture in the side plate. The portion of the bush has tooth shaped projections extending radially outwardly such that the overall diameter of th... | 08/11/1987 |
| 4685173 | Grommet with angularly positionable tubular portion A one-piece grommet having a central elongated tubular portion surrounded by a cylindrical rim portion. One end of the rim portion is formed with a continuous laterally extending mounting flange spaced from an annular detent shoulder defining an annular g... | 08/11/1987 |
| 4685174 | Shock absorbing caster wheel suspension with frictional vertical oscillation dampening A shock absorbing caster wheel in which the wheel support bracket is pivotally mounted on a caster bracket and a spring engages the wheel support bracket and caster bracket to absorb shocks on the caster wheel. Vibration dampening pads on the caster brack... | 08/11/1987 |
| 4685175 | Spring system for double-hung window sash A window spring system for jamb liners 10 having a guide rails 11 formed in sash run regions 12 includes a spring 40, spring cover 60, spring anchorage 30, and sash platform 50 assembled within spring cover 60 that encloses spring 40 and has a closed back... | 08/11/1987 |
| 4685176 | Safety fastener A safety fastener for lugs includes two bolts pivotally mounted to a block in a cylindrical hollow body. The bolts can move between a lug-engaging latching disposition and a lug-releasing unlatching disposition, and are biased to the latching disposition ... | 08/11/1987 |
| 4685177 | Buckle, especially for a safety belt for an automobile vehicle This buckle comprises, housed in a casing (1), a body (4), a member for locking (5) a bolt, a sliding block (10) mounted in the body so as to be capable of travelling in the direction of travel of the bolt and which cooperates with a spring (12) for eject... | 08/11/1987 |
| 4685178 | Tampon-forming device A device for forming a tampon comprising an inlet guide for a starting tampon material having an inlet opening and an outlet opening, the inlet opening being greater in the inner diameter than the outlet opening and the inlet guide having a plurality of g... | 08/11/1987 |
| 4685179 | Air processing apparatus An air processing apparatus is disclosed having a feed roll pulling yarn from a source and feeding it to an air entangler at a feed rate. The yarn is entangled by a high pressure air stream in the air entangler, and a delivery roll pulls the yarn from the... | 08/11/1987 |
| 4685180 | Contour shaping apparatus A cutting unit and a grinding unit are aligned adjacently and adopt a common contour tracing means numerically controlled with respect to a X-Y plane coordinate system. A cutting tool and a grinding tool are provided on respective θ-axes along Z-directio... | 08/11/1987 |
| 4685181 | Heavy duty rotary disc rasp A rotary disc rasp formed from a dish shaped rigid metal plate. Holes are punched or drilled through the plate in the direction of rotation and the rear edges of the holes are forced outwardly relative to the convex side of the plate to provide cutting te... | 08/11/1987 |
| 4685182 | Impression cylinder for cooperation with a printing cylinder A radially deflectable impression cylinder, such as an impression cylinder for cooperation with a rotogravure printing cylinder. The impression cylinder includes a shell which is freely rotatably mounted on a stationary axle by means of annular members ca... | 08/11/1987 |
| 4685183 | Controlled deflection roll A controlled deflection roll including a rotary tubular roll shell carried on a stationary shaft extending through the roll shell, the roll shell supported on the shaft for pressure engagement along a working face with an opposing member to form a pressin... | 08/11/1987 |
| 4685184 | Self-lubricated track-roller bearing and method of constructing the same A self-lubricating track-roller bearing and the method of manufacturing the same that includes such a bearing with an inner race ring having a liner of self-lubricating material bonded to the outer surface of the inner race ring which is manufactured by t... | 08/11/1987 |
| 4685185 | Method of manufacturing an ink jet head An aperture plate for an ink jet head is formed by micro electrical discharge machining one surface of the plate to form a dimple-like recess with a relatively wide flat base. An aperture is then formed through the plate in the region of the dimple, as by... | 08/11/1987 |
| 4685186 | Method of inserting a sleeve within a heat exchanger tube The simultaneous straightening and insertion of tubular sleeves into damaged heat exchanger tubes is accomplished by passing a pre-bent tubular sleeve through a bending apparatus utilizing three forming rolls. One of the forming rolls can selectively be m... | 08/11/1987 |
| 4685187 | Method of loading magnetic recording tape in cassette cases This invention loads tape into cassettes which have a zigzag shaped tape track. Positioning pins, which are located apart from the cassette's guide pins, shape the tape to conform to the cassette's zigzag pattern. When the reels are lowered to the cassett... | 08/11/1987 |
| 4685188 | Method of coupling two flanged shaft ends Coupling of two flanged shafts end-to-end by means of taper pin bolts and expansion sleeves cooperating with the pin bolts and having the same conicity, said sleeves extending into bores provided in said flanges and said pin bolts having external threads ... | 08/11/1987 |
| 4685189 | Pliable sleeve which is turned inside out and lubricated when fitted on a core and method of installing same A sleeve of pliable, elastic material, such as silicone rubber or the like, intended to be turned inside out when being fitted onto a slender elongated core, for example an end of a high tension cable. The sleeve is provided on its outer surface, which su... | 08/11/1987 |
| 4685190 | Method of operating an appparatus for producing conveyer belts A method of producing steel-wire-reinforced conveyer belts. The steel wires, which are conveyed at a uniform tension through the production apparatus, each have associated with them a respective hydraulic tensioning cylinder. The cylinders, which communic... | 08/11/1987 |
