Manually operated pump or compressor

Details Manually operated pump or compressor Manually operated pump or compressor

2005-08-09

2005-08-09

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

With flexible transmission element secured to working member

C074S089200

Reexamination Certificate

active

06925927

ABSTRACT:
Apparatus comprising a pump or compressor operated by a pull-cord wound around a pulley (9), in which the pulley drives a shaft (11) which drives the pump or compressor, and the pulley is recoiled by means of a retractor type spring (32), torsion bar or elastic band. The retractor spring is mounted not both co-planar and co-axial with the pulley. The principal may be applied to reciprocating or rotary pumps or compressors, with compressible or incompressible fluid.

REFERENCES:
patent: 1445721 (1923-02-01), Schleppy
patent: 1921265 (1933-08-01), Shortt
patent: 2730092 (1956-01-01), Reif
patent: 2784676 (1957-03-01), Woodward
patent: 4068644 (1978-01-01), Newport
patent: 5180283 (1993-01-01), Vickery, III
patent: 5397144 (1995-03-01), Mirand et al.
patent: 6227810 (2001-05-01), Huang et al.
patent: 0 444 387 (1991-09-01), None
patent: 0 806 568 (1997-11-01), None

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