Bizarre Patents
A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7350996 | Retractable writing utensil A writing utensil having a distal end and a proximal end and extending generally along a longitudinal axis includes a casing having a slot extending generally along the longitudinal axis adjacent the proximal end, an eraser disposed on the proximal end of the casing... | 04/01/2008 |
| 7266137 | Laser gas replenishment method Output beam parameters of a gas discharge laser are stabilized by maintaining a molecular fluorine component at a predetermined partial pressure using a gas supply unit and a processor. The molecular fluorine is subject to depletion within the discharge chamber. Gas... | 09/04/2007 |
| 7219455 | Three-view foldable calendar A three-view foldable calendar (10) consisting of a single integrated structure (12) that includes three sections: an upper section (14), a center section (16) and a lower section (18). When the calendar (10) is to be stored... | 05/22/2007 |
| 7066042 | Advancing/retracting mechanism An advancing/retracting mechanism having a pair of cams is disclosed. The advancing/retracting mechanism includes a first cam, a second cam, and a barrel. The first cam includes an angled surface and a shoe, and the second cam includes an angled surface and a slider... | 06/27/2006 |
| 7059796 | Self-sealing retractable writing instrument A retractable writing instrument that substantially prevents writing fluid from evaporating through the tip when the tip is in a retracted position to eliminate the need for a cap. Within the writing instrument is an enclosure member that has a vapor chamber. In the... | 06/13/2006 |
| 6998620 | Stable energy detector for extreme ultraviolet radiation detection A detector for use with an EUV photon source emitting around 11-15 nm includes at least one multilayer mirror for reflecting the beam along an optical path include a detector element, a filter for reducing the bandwidth of the beam, and the detector element. The det... | 02/14/2006 |
| 6942411 | Telescopic ball-point pen A telescopic ball-point pen includes a tubular body, including a sliding axial tube, which in turn includes a refill tank. An interior surface of the body and an exterior surface of the sliding axial tube are threaded to form a driver screw portion, and an interior ... | 09/13/2005 |
| 6907058 | Energy monitor for molecular fluorine laser A beam parameter monitoring unit for coupling with a molecular fluorine (F2) or ArF laser resonator that produces an output beam having a wavelength below 200 nm includes a detector and a beam path enclosure. The unit may also include a beam splitter with... | 06/14/2005 |
| 6837638 | Capless holding device A capless holding device which does not use any removable caps but which can reliably move a medium between a projected position and a housed position is provided. The capless holding device includes a cylinder holding a refill that is movable between a projected po... | 01/04/2005 |
| 6585441 | Stylized writing instrument A stylized writing instrument shaped like a proprietary or familiar object. Embodiments of the invention include a housing shaped like the proprietary or familiar object, a writing implement, and internal mechanisms provided within the housing for extendi... | 07/01/2003 |
| 6554518 | Writing instrument with a retraction device A writing instrument with a retraction device includes a hollow barrel, a grip attached to a lower end of the hollow barrel, a writing implement mounted in the hollow barrel and the grip, and an elastic member mounted around a lower portion of the writing... | 04/29/2003 |
| 6547470 | Retractable combination pen and screwdriver A combination tool capable of being clipped into a pocket which incorporates an outwardly biased writing implement, e.g., pen, into a tip of a removable Phillips-head screwdriver tip at one end of a hexagonal tube while having a removable second tip, e.g.... | 04/15/2003 |
| 6382860 | Safety knock-type writing utensil A safety knock-type writing utensil capable of maintaining an outer shell in a relatively thin thickness and making a length of a writing lead substantially long by the change of the locking position, thereby allowing a large amount of ink to be stored th... | 05/07/2002 |
| 6340261 | Ball-point pen A ball-point pen is so configured that an elastic body is installed in a state that it cannot be pulled out such that it can push a ball at the point at all times directly or indirectly via a movable member, satisfying a relation 20.multidot.W | 01/22/2002 |
| 6287036 | Knocking writing utensil A knocking writing utensil for use with a writing medium includes an external cylinder for receiving the writing medium located inside the external cylinder, the medium being urged rearwardly, a rotational cam mechanism including a cam cylinder capable of... | 09/11/2001 |
| 6264388 | Rotary locator with differential position in a pen A rotary locator with differential position in a pen comprises an adapter head, a follower stem, and a cam. The adapter head is fixed at the top of the pen, an upper forked portion with a pivot device at the top thereof to form a groove seat, and a lower ... | 07/24/2001 |
| 6227734 | Knocking writing utensil A knocking writing utensil which automatically returns a writing medium to a withdrawn position when a clip is used, includes an engagingly-locking protrusion formed on an engagement body that moves inside an external cylinder together with a refill. An e... | 05/08/2001 |
| 6224282 | Side knock-type ball point pen A side knock-type ball point pen includes a barrel having a front end portion and a rear end portion, a refill-receiver member axially movably incorporated within the barrel, a refill removably received in the refill-receiver member, the refill including ... | 05/01/2001 |
| 6095706 | Writing instrument operated by a finger at a holding position A writing instrument operated by a finger at a holding position comprising a hollow body for containing at least one refill, in which each refill is always forced toward a retracted position in the hollow body, and is moved between the writing position an... | 08/01/2000 |
| 5997204 | Retractable ball-point pen An operating mechanism of a retractable ball-point pen including a ring mounted over a pin. The pin has at one end thereof a push button and at the other end thereof a portion having a greater diameter. Additionally, the pin has at least one pair of ribs ... | 12/07/1999 |
| 5871296 | Clicking-type writing implement A clicking-type writing implement includes a writing element having a writing portion at its distal end, a spring for urging the writing element toward the end, and a clicking rod loosely fitted interlocked with the writing element so as to project from a... | 02/16/1999 |
| 5551788 | Writing instrument A writing instrument with an advance-retract mechanism is operable by rotation of a knob opposite the writing tip. The knob rotates a shaft disposed in, and extending rearwardly from, the instrument body to advance and retract the writing tip when rotated... | 09/03/1996 |
| 5417504 | Refill unit for a writing instrument A refill unit (1) for a writing instrument has a writing tip (5) at one end and a ratchet mechanism (7) at the other end through the use of which the unit (1) can be turned and selectively extended from and retracted into the writing instrument. The ratch... | 05/23/1995 |
| 5413428 | Writing instrument A writing instrument including; a front casing having a throughhole extending longitudinally therethrough; a refill extending in the throughhole; and a cam body located in the throughhole. The cam body has at least one cam groove formed on the inner perip... | 05/09/1995 |
| 5405207 | Voice pen for generating audible messages A voice pen comprises: a housing, an applying ink part, a part for retracting and extending the ink applying part; and an audio module for reproducing an audible message in response to extension of ink applying part. More specifically, extension and retra... | 04/11/1995 |
| 5342135 | Writing instrument having advance-retract mechanism A writing instrument includes an advance-retract mechanism for projecting the writing tip from within the barrel for employment of the writing instrument, and retracting the tip to a point within the barrel, when the writing instrument is not in use. A pl... | 08/30/1994 |
| 5184908 | Writing implement with side actuator A writing tool comprised of a head member, a refill, a return spring, and a cam mechanism for projecting the top of the refill out of or retracting it into the head member comprised of cam body, a rotation cam, and cam bar. The cam body is attached to the... | 02/09/1993 |
| 5145272 | Projectable and retractable, push button writing instrument A writing instrument includes a reservoir, a barrel in which the reservoir is received for a longitudinal displacement between a retracted position and a writing position, a push button for actuating the reservoir, and a shift device for moving the reserv... | 09/08/1992 |
| 5048991 | Structure of driving ball refill for a ball point pen A refillable ballpoint pen structure in which the refill can be extended or retracted by relative rotation of the parts of the pen structure through 360°. A driving casing tube is fixed in the upper end of a body tube and an external casing tube is fitte... | 09/17/1991 |
| 5004364 | Device for advancing and retracting writing element in writing instrument A device for advancing and retracting a writing element in a writing instrument, of the type comprising a cylinder, a stationary cam provided on an inner surface of the cylinder, a rotary cam follower disposed inside the stationary cam to be rotatable and... | 04/02/1991 |
| 4947564 | Informational tracking calendar A calendar for orienting selected sheets upon the happening of an event of program, is made from three portions: (a) a lower portion which contains a plurality of sheets where each sheet represents a selected period of time such as a mouth (b) an upper po... | 08/14/1990 |
| 4778302 | Combination writing instrument and handcuff locking and unlocking device A combination writing instrument and handcuff activating device comprises an elongated housing having a writing element and a handcuff locking element axially movable therein. On one end of the housing is a handcuff key. A mechanism is provided so that on... | 10/18/1988 |
| 4669904 | Writing instrument with weight actuation A writing instrument comprises a refill disposed slidably along the axial direction in an outer cylinder, a rotating cam set provided in the vicinity of the rear portion of the refill, a weighting balance placed in the vicinity of cam bar of the rotating ... | 06/02/1987 |
| 4624594 | Fluid dispenser A fluid dispenser according to the present invention has a tubular body having therein a fluid chamber, a pusher for pushing the fluid, and a feed mechanism for progressively advancing the pusher. The feed mechanism has a slider and an actuator for advanc... | 11/25/1986 |
| 4585364 | Ball pen combined with electronic watch A ball pen includes an electronic watch embedded in an inner jacket fixed within a pen cap, wherein the pen cap may be depressed to push ball point outwards for writing use and at the same time, electrically contact a circuit of the electronic watch for s... | 04/29/1986 |
| 4544295 | Mechanical pencil with self-contained insert A mechanical pencil comprising a pencil barrel, a cam cylinder mounted in the pencil barrel at a front portion thereof and having a cam wall formed on an inner circumferential surface, a cylindrical slide cam engaged with the cam wall for back-and-forth m... | 10/01/1985 |
| 4459056 | Disposable pencil structure and method of sharpening pencil head A disposable lead pencil, eraser and sharpener combination in which there is an eraser mounted upon one end of the housing and an abrasive sharpener structure contained within an enclosed and sealed chamber at the opposite end of the pencil housing. Sharp... | 07/10/1984 |
| 4290707 | Writing instrument having multiple writing elements An improved writing instrument having multiple writing elements, i.e., a mechanical lead pencil element and at least one other writing element, which are selectively movable into operating position by rotation of a cam and wherein lead can be moved from t... | 09/22/1981 |
| 4115015 | Retractable pen with internal tip seating A retractable pen includes a slide cylinder (1) axially coupled to a push tube (17) and slidably but non-rotatably disposed in a surrounding body cylinder (25) and biased toward a retracted position therein by an internal spring (24). The front end of the... | 09/19/1978 |
| 3944371 | Retractable writing implement A retractable ball-point pen includes a housing comprising a barrel and cap, the latter being rotatable with respect to the former to control extension and retraction of a writing tube located within the housing. A ferrule which is pressfit into an openin... | 03/16/1976 |
