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| Number | Title | Issue Date |
| 6921224 | Retractile mechanism for refill of writing instrument A retractile mechanism for refills of writing instrument includes an outer tube, a refill, an inner tube, a sliding ring with load and a compression spring. The inner tube having a front stopper on the front end and a rear stopper on the rear end thereof. By movemen... | 07/26/2005 |
| 6773185 | Retractile pen A retractile pen has an outer barrel, an inner barrel movably located in the outer barrel, and a clip connected to a rear end of the outer barrel. The inner barrel has a retaining bolt elastically connected to a rear end thereof. A first and a second guide slot are ... | 08/10/2004 |
| 6276855 | Retractile pen A retractile pen includes an outer barrel and an inner barrel axially slidably received in the outer barrel. The outer barrel is provided with two axially spaced and aligned stop holes and the inner barrel is provided with an elastically depressible butto... | 08/21/2001 |
| 5837298 | Piezoelectrically-actuated vibrating surface-finishing tool A vibrating hand trowel for finishing plastic concrete. The vibratory mechanism includes piezoelectric elements which vibrate at a high frequency when a voltage is applied to them. The trowel as a whole includes a top piece including a cover plate and han... | 11/17/1998 |
| 5725323 | Writing appliance that closes automatically after a given time interval A writing implement of the type that incorporates a writing element which has the characteristic of deteriorating in the presence of air is disclosed. It comprises a housing and a writing element contained in the housing. A bias member for urging the writ... | 03/10/1998 |
| 5336006 | Retractable writing instrument having replaceable cartridge A writing instrument is provided which includes a body having a barrel portion and a plunger portion. The barrel portion has opposed front and rear ends for housing a replaceable writing cartridge and a spring for biasing the cartridge toward the rear end... | 08/09/1994 |
| 4991985 | Multifunctional handle for writing implement A grip-steadying device for a writing instrument with an elevated-elongate grip-protrusion extending from the barrel of the instrument. The protrusion may extend from, or comprise a collar adapted to slidably encircle the barrel that can be moved to a poi... | 02/12/1991 |
| 4572688 | Ball-point pen A ball-point pen is disclosed, having a push button which can be displaced to a limited extent in longitudinal direction of the ball-point pen housing so as to extend the cartridge which is urged by spring in the inward direction, and having a detent mean... | 02/25/1986 |
