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 |
| 7861664 | Toy door knocker, and construction and educational kits including a door knocker Modular constructional toy kit and instructional story book, for use in forming a customized and personalized privacy guard in the form of a door knocker and learning the importance of protecting and respecting a persons right to privacy. The constructional toy kit ... | 01/04/2011 |
| 7578255 | Combination door knocker, peep hole, and decoration hanger An integrated peephole, door knocker, and door decoration support hanger constructed as an integral unit to aid in a single installation and preservation of an outward facing door. ... | 08/25/2009 |
| 7424863 | Bell and brake lever combination for bicycle A bell mounted in one of at least one brake lever of a bicycle is disclosed. The brake lever includes two brake levers each including an opening section. In one embodiment, the bell includes a sounding section in the opening section and including a hollow cylinder, ... | 09/16/2008 |
| 7225753 | Bell device A bell device includes a housing having two housing members secured together, and one or more peripherals rib extended into an opening of the housing, a securing device includes a shank engaged in the opening of the housing, and includes a peripheral flange extended... | 06/05/2007 |
| 7220904 | Bell and clapper for bells A clapper for a bell is hollow on the inside for receiving objects, such as a personal dedication. The clapper may also be provided with a coating for damping the volume of the bell strike, or at least change the sound. ... | 05/22/2007 |
| 7119289 | Push button keypad and knob for motor vehicle control panel The invention relates to a keypad (10) for a control panel, in particular for a motor vehicle instrument system, comprising a front (30) provided with openings (32) through which a number of push-buttons (20) are placed, each positioned f... | 10/10/2006 |
| 6915756 | Bells A bell is described having the first at least three or more frequencies substantially in harmonic sequence. A method for designing such a bell is also disclosed. An optimization procedure is described wherein an initial bell shape is modified until the first at leas... | 07/12/2005 |
| 6871613 | Tarnish-resistant handbell and its method of manufacture A handbell has a bell body with an inner surface engageable by a clapper to produce a sound corresponding to a note of the musical scale and an outer surface with a vapor deposited nitride layer that resists tarnish. Preferably, the vapor deposited nitrate layer has... | 03/29/2005 |
| 6759955 | Doorbell system A doorbell system includes first and second pushbutton and an RF transmitter activatable by the first and second pushbutton. An RF receiver is configured to receive RF signals from the RF transmitter. The doorbell system further includes a microphone. A first storag... | 07/06/2004 |
| 6739282 | Bell assembly having actuatable clapper A bell device includes a securing device attached to a bell member, a seat rotatably secured to the securing device with a shaft and rotatable relative to the securing device about the shaft, and a resilient member having one end secured to the seat and a clapper se... | 05/25/2004 |
| 6390014 | Acoustic signaling device for culinary-use vessels, in particular for kettles An acoustic signalling device for containers destined for culinary use, in particular for boilers, is proposed, comprising a nozzle (11) able to convey externally to a container able to be closed (2) whereto the device is associated a steam jet formed ins... | 05/21/2002 |
| 6357381 | Control lever for generating a level sound An improved control lever for generating a level sound which enables audible control of the control lever without looking at the control lever during the operation of a vehicle by generating a predetermined level sound in accordance with the position of t... | 03/19/2002 |
| 6263828 | Jingle bell A jingle bell, which includes a holder base having a vertical center shaft and two upright locating rods, a dial supported on the holder base for turning by hand, the dial having equiangularly spaced triangular blocks, a rotary support member turned about... | 07/24/2001 |
| 6125785 | Bell assembly A bell assembly in which the bell is mounted on a plastic base by means of a plastic collar snap-fitted into aligned holes in the bell and the bell mounting element of the base. The collar is formed with an axial bore for receiving a plastic manually depr... | 10/03/2000 |
| 5986541 | Motor driven bell A motor driven bell for producing a sound of a bell in a manner that a hammer member hits a gong through the use of a driving force of a motor. The motor driven bell comprises a supporting shaft A1 born on a front side between a pair of opposed frames, a ... | 11/16/1999 |
| 5975008 | Rotatable striking elements for a handbell A clapper assembly includes circular strikers which can be individually rotated so that a new portion of the surface of the striker is presented in the direction of the clapper stroke. A pair of opposing plates located at the end of the clapper bar retain... | 11/02/1999 |
| 5909169 | Electric bell having a mechanism for supporting electromagnetic unit An electric bell includes a base having two walls extended upward from the central portion for forming a casing. The walls each includes an upper portion having one or more projections. Two spring leaves are secured on the base. An electromagnetic unit is... | 06/01/1999 |
| 5583477 | Wireless AC/DC bell A wireless AC/DC bell which includes a transmitter circuit, which includes a battery power source, an indicator light, a modulation transistor, and an amplifier, and a receiver circuit, which includes a receiving antenna, a demodulator, an amplifier-recti... | 12/10/1996 |
| 5494714 | Bell A bell includes two shells coupled together by a common foldable coupling element and foldable relative to each other for engaging with each other when folded at the coupling element. One of the shells includes a number of depressions, and the other shell... | 02/27/1996 |
| 5038703 | Device and method to aid in toilet training pets A training and communicating device for domestic animals which is mountable to a doorknob or other mounting element on or near a door. An elongated leather strip is provided with an aperture for removably suspending the strip from a doorknob. The strip al... | 08/13/1991 |
| 4770114 | T.V. remote control box finder A finder for a T.V. remote control box has an elongated flexible tail connected to the remote control box. The tail preferably has a color contrasting with the color of newspapers and has at least one bell attached to it, and at least one aperture for han... | 09/13/1988 |
| 4619846 | Bell A bell having a mantle which is fully broken through by a plurality of gaps longitudinally and axially formed along the circumference of the mantle and dimensioned to tune the bell to a predetermined tonal frequency range.... | 10/28/1986 |
| 4574184 | Saucepan and cover for a cooking utensil, particulary a steam pressure cooking pan The invention relates to a cooking vessel comprising a cooking pan and cover, especially a steam pressure cooker, to which a temperature-dependent resistor is attached as a temperature sensor with an attached computing device for the determination of the ... | 03/04/1986 |
| 4567846 | Magnetically operated door chime A magnetically operated door chime adapted for mounting on a door and door frame. The door chime includes a casing adapted for mounting on the door frame and having a plunger assembly mounted for reciprocation along a horizontal path perpendicular to the ... | 02/04/1986 |
| 4535229 | Saucepan and cover for a cooking utensil, particularly a steam pressure cooking pan The invention relates to a cooking vessel comprising a cooking pan and cover, especially a steam pressure cooker, to which a temperature-dependent resistor is attached as a temperature sensor with an attached computing device for the determination of the ... | 08/13/1985 |
| 4513035 | Ornament An ornament simulating a bell is provided and consists of a hollow generally conical shaped inverted cup, an outer covering placed about the cup, a hanger element disposed through top portion of the cup with one end affixed to a decorative element being s... | 04/23/1985 |
| 4436052 | Globe-shaped bells with single-piece shells A mold producing one or more globe-shaped bells, each of which is cast as a one-piece shell enclosing a tumbling ball-bearing or jinglet. Production of the one-piece shell is made possible by pouring molten metal over a spherical core, supported by small ... | 03/13/1984 |
| 4354448 | Manually driven generating mechanism for doorbells The present invention relates to an improved gyro-type manually operated dynamo mechanism applied to appliances consuming limited momentary power. Energy is stored by stressing a spring which, when released, keeps in mechanical connection with a train of ... | 10/19/1982 |
| 4349065 | Mold producing globe-shaped bells with single-piece shells A mold producing one or more globe-shaped bells, each of which is cast as a one-piece shell enclosing a tumbling ball-bearing or jinglet. Production of the one-piece shell is made possible by pouring molten metal over a spherical core, supported by small ... | 09/14/1982 |
| 4194724 | Chainmate A wooden block, upon which an automobile wheel can climb, to facilitate tire chain installation, the block including an inclined ramp at one end, and a pair of transverse grooves across its top for receiving the chain; and the block, in a modified design,... | 03/25/1980 |
| 4108104 | One piece plastic molded structural unit and door knocker constructed therefrom A one piece molded synthetic organic resin structure including a base and an arm connected thereto at spaced apart points by thin struts easily severed to separate the arm from the base. Connection means are provided on the arm and the base so that one en... | 08/22/1978 |
| 4098509 | Golfing device A golfing device for audibly indicating improper head movement of a golfer during a golf swing. A support is clamped to a golfer's hat, a headband or the like and movably secures a sound-producing element adjacent the golfer's head. Any head movement beyo... | 07/04/1978 |
| 4004547 | Christian door knocker A Christian door knocker is described which has the form of a cross. The door knocker consists of a cross-shaped base and a knocking element disposed adjacent to the upright portion of the base for swinging movement with respect to the base.... | 01/25/1977 |
