Printing – Printing members and inkers – Pad inker
Reexamination Certificate
1999-08-03
2001-02-20
Hilten, John S. (Department: 2854)
Printing
Printing members and inkers
Pad inker
C101S334000, C101SDIG029, C101S035000
Reexamination Certificate
active
06189451
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention, in general, relates to a manually operable stamp of the kind consisting of two sections which may be moved relative to each other between idle and operational states and, more particularly, to a stamp for placing an imprint on a bulging surface.
2. The Prior Art
Conventional stamps sized for carrying in a user's pocket cannot be used without considerable difficulty for placing imprints on bulging or convex surfaces, particularly slippery ones. Such stamps tend to slip on the surfaces leaving unpleasantly smudged or blurred imprints.
OBJECTS OF THE INVENTION
It is a primary object of the invention to provide a stamp useful for placing imprints on bulging or convex surfaces.
A particular object is to provide a stamp having a stamping platen disposed in an idle position and selectively movable into an operational or printing position in engagement with a bulging surface for providing an imprint thereon without any likelihood of lateral movement.
Another object of the invention resides in a stamp movable against the bias of a spring in a retainer into a printing position on a bulging surface.
It is also an object of the invention to provide a self-inking stamp with a support frame and stamp platen of substantially concave configuration.
It is another object of the invention to provide a stamp of the kind referred to which is provided with a stamping surface of substantially concave configuration movably disposed within a housing having an aperture substantially conforming to a bulging surface.
A further object of the invention is to provide a stamp disposed within a housing consisting of two separable sections one of which may serve as a device for securely positioning a bulging surface of an article to be stamped relative to the stamp.
Other objects will in part be obvious and will in part appear hereinafter.
SUMMARY OF THE INVENTION
In a currently preferred embodiment of the invention, there is provided a stamp provided with marginal portions which prevent movement laterally of a convex or bulging surface. Such marginal portions may be part of the printing platen of the stamp or of a housing within a cavity of which the stamp is movable between idle and stamping positions. The cavity may have an opening the margins of which are resiliently deformable. Preferably, the printing platen of the stamp assumes a concave configuration at least when it moves into engagement with a bulging surface on which an imprint is to be made, or it is configured as a concave surface ab initio.
Concave and convex as used in the context of this disclosure are intended to connote spherical and ellipsoidal configurations as well as other bulging configurations adapted to a given special purpose.
It is possible, with such a stamp to form clean imprints on spherically bulging surfaces such as, for instance, a golf ball, without the stamp surface sliding laterally thereof. In a preferred embodiment of the invention a convexly bulging stamp pad substantially complementing the concave surface of the stamp platen is provided in one of the housing portions. The stamp housing or retainer sections may be separable or they may be moved relative to each other with the stamp executing a swivelling movement between engaging the stamp pad and the surface to be stamped. The stamp pad may have a surface which is convexly bulging as such, or it may be made of a yielding material, such as, for instance, an ink-absorbing foamed polymer, which assumes a convex surface configuration when resiliently engaged by the stamp surface.
In a further embodiment of the invention one of the housing sections may be provided with a support surface at one end and, at an opposite end, with an aperture for supporting an article to be stamped. Such a housing portion may thus serve as a stand for a spherical article to be stamped.
Where the housing consists of two separable portions a seal is preferably provided between them to prevent the escape of any stamp-ink solvents. Such a seal would prevent a premature deterioration or decomposition of the stamp-ink. The seal may be constitutes by a tight fit between the housing sections or by a gasket seated in one section for engagement with a wall of the other section.
The engagement between such housing sections may be provided by a snap fit, a threaded connection, a bayonet closure, a zipper and the like.
In another embodiment of the invention the stamp may be of the so-called pre-inked kind movable between a recessed disposition within a cavity of a housing into a stamping position within an opening of the housing. The opening may either have a margin shaped to complement a bulging surface or be made of a material which will conform to the bulging surface by the application of slight pressure.
Where the stamp is of the self-inking kind the support frame of its lower section either conforms, or will conform, to the bulging surface structure of the article to be stamped.
REFERENCES:
patent: 952501 (1910-03-01), Blumberg
patent: 1069356 (1913-08-01), Tilden
patent: 1236801 (1917-08-01), Willard
patent: 1814170 (1931-07-01), Long
patent: 1992037 (1935-02-01), Mulder
patent: 3019762 (1962-02-01), Hautz
patent: 3948173 (1976-04-01), Barasch
patent: 6125747 (2000-10-01), Elliott
patent: 25 07 855 (1976-09-01), None
patent: 615405 (1926-01-01), None
patent: 395486 (1933-07-01), None
patent: 424947 (1935-03-01), None
Grohusky Leslie J.
Hilten John S.
Hormann Karl
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