Expansible chamber devices – With releasable stop or latch means to prevent movement of...
Reexamination Certificate
1999-08-16
2001-06-26
Ryznic, John E. (Department: 3745)
Expansible chamber devices
With releasable stop or latch means to prevent movement of...
C417S234000
Reexamination Certificate
active
06250205
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a floor pump having a positioning arrangement for positioning the handle of the floor pump.
2. Description of the Related Art
A conventional floor pump generally includes a base, a cylinder extended upward from the base, a piston rod having a lower end reciprocatingly received in the cylinder, and a handle attached to an upper end of the piston rod for manual inflation operation. Nevertheless, the handle is not fixed and thus causes inconvenience to carriage by a bicycle frame. Carriage by the user's hand is also inconvenient, as the user must hold the floor pump at the cylinder portion, rather than directly grasping the handle that is more ergonomic.
The present invention is intended to provide an improved floor pump that mitigates and/or obviates the above problems.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a floor pump having a positioning arrangement for positioning the handle of the floor pump.
In accordance with a first aspect of the invention, a floor pump comprises:
a base;
a cylinder extended upward from the base;
a piston rod having a lower end reciprocatingly received in the cylinder and an upper end beyond the cylinder;
a handle attached to the upper end of the piston rod for manual inflation operation, the handle comprising a body with a retainer formed thereon; and
a positioning member including a first end in pivotal connection with the cylinder, the positioning member further including a second end releasably engaged with the retainer on the handle, wherein the handle is retained in place when the second end of the positioning member engages with the retainer on the handle, and wherein the handle is operable when the second end of the positioning member disengages from the retainer on the handle.
The cylinder has a second retainer formed thereon for releasably engaging with the second end of the positioning member. A carrier may be attached to the cylinder for carrying a nozzle for inflation. Each of the first-mentioned retainer and the second retainer includes a hook for releasably engaging with the second end of the positioning member. The positioning member may be an arcuate member with a hooked end for releasably engaging with the retainer.
In accordance with a second aspect of the invention, a floor pump comprises:
a base;
a cylinder extended upward from the base;
a mounting seat mounted on top of the cylinder;
a piston rod having a lower end reciprocatingly received in the cylinder and an upper end beyond the cylinder;
a handle attached to the upper end of the piston rod for manual inflation operation, the handle comprising a body with a retainer formed thereon; and
a positioning member including a first end in pivotal connection with the mounting seat, the positioning member further including a second end releasably engaged with the retainer, wherein the handle is retained in place when the second end of the positioning member engages with the retainer on the handle, and wherein the handle is operable when the second end of the positioning member disengages from the retainer on the handle.
The mounting seat has a second retainer formed thereon for releasably engaging with the second end of the positioning member. A carrier may be attached to the mounting seat for carrying a nozzle for inflation. Each of the first-mentioned retainer and the second retainer includes a hook for releasably engaging with the second end of the positioning member. The positioning member may be an arcuate member with a hooked end for releasably engaging with one of the retainer.
In accordance with a third aspect of the invention, a floor pump comprises:
a base;
a cylinder extended upward from the base, the cylinder having a retainer ring formed thereon, the retainer ring including a solid section and a notch section, the solid section including a space therebelow;
a piston rod having a lower end reciprocatingly received in the cylinder and an upper end beyond the cylinder; and
a handle attached to the upper end of the piston rod for manual inflation operation, the handle comprising a body with a protrusion thereon, the protrusion being smaller than the notch section;
wherein the handle is in an operative position when the protrusion aligns with the notch section, and wherein the handle is retained in place when the protrusion is moved into the space below the solid section by means of moving the protrusion into the notch section and then rotating the handle.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 515474 (1894-02-01), Holt
patent: 634961 (1899-10-01), Smith
patent: 1623647 (1927-04-01), Wepplo
patent: 4508490 (1985-04-01), Ramirez et al.
patent: 4976372 (1990-12-01), Rogers, Jr.
patent: 5538031 (1996-07-01), Brence et al.
Kamrath Alan
Rider Bennett Egan & Arundel LLP
Ryznic John E.
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