Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7975418 | Firearm having nonmetallic components and an ambidextrous cylinder release lever A polymeric revolver including a frame, a cylinder mounted in a rectangular aperture in the frame, a cylinder retaining mechanism and a cylinder releasing mechanism is provided. The cylinder retaining mechanism includes two assemblies: (1) an extractor, locking bolt... | 07/12/2011 |
| 7900389 | Firearm having nonmetallic components and an ambidextrous cylinder release lever A polymeric revolver including a frame, a cylinder mounted in a rectangular aperture in the frame, a cylinder retaining mechanism and a cylinder releasing mechanism is provided. The cylinder retaining mechanism includes two assemblies: (1) an extractor, locking bolt... | 03/08/2011 |
| 7861449 | Cylinder latching mechanism for revolver A revolver with latching mechanism for swing-out type cylinder. The revolver includes a frame, a rotatable cylinder movable from a ready-to-fire position in the frame to a loading position laterally displaced outwards from the frame, and a latching member retained i... | 01/04/2011 |
| 7861450 | Firearm having nonmetallic components and an ambidextrous cylinder release lever A polymeric revolver including a frame, a cylinder mounted in a rectangular aperture in the frame, a cylinder retaining mechanism and a cylinder releasing mechanism is provided. The cylinder retaining mechanism includes two assemblies: (1) an extractor, locking bolt... | 01/04/2011 |
| 7156084 | Paint-ball sport gun with adjustable detent assembly A detent body with a center bore is secured to the chamber wall of a paint-ball gun. A floating detent with a hollow core and a domed tip reciprocates within the center bore, allowing the tip to extend into the chamber to restrict movement of a paint ball. Axially a... | 01/02/2007 |
| 7147380 | Pressure screw assembly primarily used with an axially guided locking ring to permit controlled axial clearance movement of the chock bearing A locking ring assembly retains a bearing to a shaft rotatably supported on a first axis of rotation. Guide pins or rods extend axially from an annularly shaped bearing retainer slideably disposed on the shaft towards the pressure ring, also slideably disposed on th... | 12/12/2006 |
| 7059075 | Cylinder retaining mechanism A cylinder retaining mechanism for a firearm includes a frame having a firing bore and a cylinder having a longitudinal bore. A yoke is pivotally connected to the frame and is operatively connected to the cylinder for selectively pivoting the cylinder between a firs... | 06/13/2006 |
| 6016736 | Firearm, particularly a revolver pistol Revolver firearm comprising a body divided in an upper part, or slider, comprising a barrel and a drum, slidingly associated with a lower part, or case, comprising a handle, a trigger and a hammer; a first kinematic chain arranged in said case for arming ... | 01/25/2000 |
| 5220115 | Dual cylinder revolver A revolver is provided with two cylinders, each of which is alignable in a firing position, a storage position, or a loading position. The cylinders are carried by a crane that pivots to orient the cylinders in a selected one of the above three positions.... | 06/15/1993 |
| 4934081 | Retainer for revolver yoke stud A retainer for a revolver yoke stud includes a screw portion with spring and pin detent carried thereby in a unitary assembly. The yoke stud includes an angular groove with a chamfered surface adapted to be engaged by the tapered end of the pin. The frame... | 06/19/1990 |
| 4908969 | Retaining device for the crane of a revolver The invention relates to a retaining device for retaining the crane of a revolver, said device being intended to provide longitudinal locking between the crane and the revolver crane while still allowing said crane to be released for dismantling purposes.... | 03/20/1990 |
| 4897950 | Locking device for the crane of a revolver A locking device is provided for holding the crane (3) in its closed position by means of a pushbutton (14) and a sliding latch (15) mounted in the crane (3). The pushbutton (14) is laterally accessible from the side of the gun opposite to the side from w... | 02/06/1990 |
| 4720930 | Firearm with foreign matter receiving cavities Modifications are provided in the structure of firearms such as breech-loading revolver handguns. Traditionally, these firearms are constructed with mating surfaces in face to face contact, which surfaces must be separated for loading. Where foreign parti... | 01/26/1988 |
| 4651456 | Revolver with reduced backlash moment A revolver has a lowered firing line by alignment of the barrel with the lowermost chamber of the cylinder. The latter is swingably mounted on a frame at a location above the cylinder and cooperates with a firing mechanism in a compartment of the stock ab... | 03/24/1987 |
| 4391056 | Retaining means for revolver cylinders A retaining means for revolver cylinders includes a resilient bushing which, upon being inserted in the cylinder bore, is engaged in an annular recess in a hollow cylinder axle making it impossible to disengage the two parts from one another after introdu... | 07/05/1983 |
| 4285152 | Semi-automatic double action revolver A semi-automatic double action revolver having an axially slidable and rotatable barrel aligned with a lower chamber of a top pivotal swing-out cylinder. The trigger mechanism includes a safety rod to prevent the opening of the cylinder while the hammer i... | 08/25/1981 |
| 3988847 | Combined cylinder-release and safety lever for revolvers A combined cylinder-release and safety device for a double-action revolver having a finger lever which is held in its normal, safety-off, position by the cylinder-spindle spring for manipulation in one direction against the pressure of the spring in order... | 11/02/1976 |
