US patent for Supramat Injector
InventionBlade Injector Razor Having Flexible Means Connecting The Handle To The Razor Head
FiledWednesday, 24th June 1964
PublishedTuesday, 4th April 1967
InventorErnst Graf De Longuyon
Parts not referenced in the text: None
Parts not referenced in the images: None
Characteristic of the razor cf the present invention is that there is provided two blade clamping plates formed of synthetic material, that is plastic, wherein the blades are held between a rigid and a resiliently pressed blade clamping plate, these blade clamping plates being provided with a respective gripping component which, when assembled, collectively form a tapered socket, with such gripping components being held together in their mutual position by means of a casing or housing sleeve.
One of the major advantages of the present invention resides in the fact that the safety-razor can be disassembled by removal of a gripping component, more specifically, by removing the casing serving as a handle. A special spring for fixedly clamping the blade is not necessary since one blade clamping plate is constructed to be self-springy. Additionally, the manufacture from plastic represents a considerable saving in costs.
In accordance with a preferred embodiment of the invention the resiliently pressed blade clamping plate is provided with recesses for the purpose of producing a spring action. The resiliently pressed blade clamping plate can also be constructed as a separate element and can be subjected to the spring action of a separate gripping member or component provided with recesses. For this purpose, there can be provided in the resilient blade clamping plate or in the separate gripping member one or more lateral slots and one or more centrally disposed slots. As a result, in the pre-stressed or biased condition there appears a deformation of the slots. The gripping components or members are, for example, assembled together in the lengthwise direction into a tapered socket or sleeve, held together by means of a casing means provided with an inner cone or inside taper. In order to secure the interconnection between the gripping components and the casing means it is possible to employ a thread-type lock, a bayonet-type lock or a snap or spring-type catch or lock. In order to be able to achieve an automatic pressing together of the blade clamping plates the one clamping plate can bear with an inclined surface against an appropriate surface of the other clamping plate. The inclined surfaces are advantageously located within the gripping components and are pressed against one another by means of the casing means.
In order to reduce wear it is recommended to provide the blade clamping plates with a bearing or support plate formed of metal. It is possible to apply to the support plate hooks serving as support means for the cutting edge of the razor blades. For example, the support plate can be form-lockingly connected with one of the blade clamping plates. It can be connected to pins of the aforesaid one blade clamping plate and by means of flexed portions can laterally enage over such clamping plate. Between both of the blade clamping plates there can be located a slot for introducing an insert portion or element operably connected with the blade dispenser or magazine. Furthermore, one blade clamping plate can possess a lateral shoulder or projection into which a slot of the other clamping plate can be pushed thereinto. It has been shown to be advantageous to provide the casing, serving as a handle, with knurls or grooves at its external surface or face for the purpose of ensuring positive handling.
Other features, objects and advantages of the invention will become apparent by reference to the following detailed description and drawings in which:
Describing now the drawings and, with particular attention initially directed to the embodiment depicted in
The blade clamping plates
In order to lock the portions
The tapered portion
A transverse or lateral slot
In order to prevent rapid wear of the bearing or support surface of the blade clamping plate
Further possibilities for providing the tapered portion
While there is shown and described present preferred embodiments of the invention it is to be distinctly understood that the invention is not limited thereto but may be oherwise variously embodied and practised within the scope of the following claims.
What is claimed is:
1. An injector-type safety razor of molded synthetic plastic, including: an elongated handle; a longitudinal hollow in said handle communicating with one end thereof; a stiff first member defining at one end a clamping plate for a blade and at the other end an elongated member for removable insertion in said hollow; means defining a blade seat and a flat surface for the seat; first means defining two ends, one end including an extension that is elastic at least in the directions transverse and perpendicular to said flat surface, for resiliently urging said blade seat against said first member, whereby to hold a blade therebetween, and for permitting insertion of the key of a blade injector magazine, and the other end defining an elongated member for insertion in said hollow; second means associated with said elongated members to ensure their correct orientation with respect to one another in the hollow; third means associated with said handle for orienting said two elongated members, with respect to said handle and removably locking them within the hollow; fourth means associated with one of said elongated members for cooperating with said third means; a metal bearing plate on the surface of said means; means for orienting and securing the plate; and means on the plate for holding the blade in place.
2. The razor of claim 1, wherein the elastic extension of said first means includes at least one slot transverse to said first means for ensuring the elasticity; said hollow tapers towards the end of the handle remote from the blade end of the razor, said elongated members also being tapered; said second means includes a flat surface associated with each of said elongated members, said surfaces bearing on one another when the elongated members are inserted in the hollow; and wherein the flat surface of the elongated member of said first member terminates in an inclined surface extending outwardly and downwardly from the flat surface; and the flat surface of the elongated member of said first means terminates in an inclined surface mating with the other inclined surface; said hollow tapers towards the end of the handle remote from the blade end of the razor, said elongated members also being tapered, the tapers of the elongated members and of the hollow cooperating to push said inclined surfaces against one another and to force said first means to move in the direction of the blade; and said fourth means engages in said third means to prevent longitudinal movement of said two elongated members in said handle.
3. The razor of claim 2, wherein said hollow is substantially round in cross section and said third means is a thread in said hollow inclined to the longitudinally axis thereof and said fourth means is a pin for engaging said thread.