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Patent
   D603427
Priority
Sep 15 2008
Filed
Sep 15 2008
Issued
Nov 03 2009
Expiry
Nov 03 2023
Inventors
Walton, Fr…
Assg.orig
Dosmatic U…
Assg.curr
Delaware C…
Entity
unknown
Referenced by
1
References
21
Maint.:
n/a
The ornamental design for an on-off plunger, as shown and described.

FIG. 1 is a perspective view of the plunger shown in one environment;

FIG. 2 is a perspective view of the plunger:

FIG. 3 is a front elevation view of the plunger, with the rear elevation view being identical to the front elevation view:

FIG. 4 is a left elevation view of the plunger, with the right elevation view being identical to the left elevation view;

FIG. 5 is a top plan view of the plunger; and,

FIG. 6 is a bottom plan view of the plunger.

The broken line showing an O-ring seat in FIGS. 2, 3, and 4 is for illustrative purposes only and forms no part of the claimed design. Likewise. the broken line showing a pump housing in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.
INVENTORS:

Walton, Frank A., Rasmussen, Jay A.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
D744094, Feb 14 2013 CITIBANK, N A Flow control device knob with indicia
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3228560,
3610264,
3963038, Aug 15 1974 Liquid proportioning pump
4030495, Nov 07 1975 Baxter Travenol Laboratories, Inc. Twin check valve pump system having fail-safe characteristic
4084606, Apr 23 1974 Baxter Travenol Laboratories, Inc. Fluid transfer device
4199083, Dec 02 1976 SPECIALTY ACQUISITION CORPORATION, A CORP OF DELAWARE Trigger actuated pump
4558715, May 16 1984 DOSMATIC, U S A , INC Apparatus for injecting measured quantities of liquid into a fluid stream
4729401, Jan 29 1987 B BRAUN MEDICAL, INC Aspiration assembly having dual co-axial check valves
4809731, May 16 1984 DOSMATIC, U S A , INC Liquid injection apparatus having an external adjustor
5137435, Mar 25 1991 Delaware Capital Formation Compression spring fluid motor
5513963, Aug 16 1994 DOSMATIC, USA INC Direct action fluid motor and injection pump
5683232, Feb 28 1994 FLIGHT MEDICAL, LTD Pump particularly useful in respirator apparatus and exhalation valve assembly thereof
5951265, Dec 29 1997 Diemold International, Inc. Fluid driven reciprocating engine or pump having overcenter, snap-action mechanical valve control
6453940, Dec 20 1999 Federal-Mogul World Wide, Inc Insert bonded combination valve
6684753, Feb 09 1999 DOSATRON INTERNATIONAL Reciprocating differential hydraulic machine, especially a differential hydraulic machine
6910405, Jul 08 2003 Delaware Capital Formation On/off switch for liquid additive injection pump
180685,
D270718, Mar 09 1981 MI DRILLING FLUIDS COMPANY, HOUSTON, TEXAS A TEXAS GENERAL PARTNERSHIP Field hand pump for use in the measuring of properties of drilling mud, or the like
D529515, Nov 09 2004 Briggs & Stratton, LLC Pump adapter
D541814, Feb 20 2004 Davey Products PTY Ltd. Pump
WO2005008060,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Sep 15 2008Dosmatic Usa, Inc.(assignment on the face of the patent)
Sep 22 2008RASMUSSEN, JAY A DOSMATIC USA, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0218880831 pdf
Sep 26 2008WALTON, FRANK A DOSMATIC USA, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0218880831 pdf
May 02 2011DOSMATIC U S A , INC Delaware Capital FormationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0262710306 pdf
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