Back to results
US 6,925,927 B2Granted
Manually operated pump or compressor
OwnerJulian Claude Peckinventor
Life of this patent
Estimating the term…
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.
Claims20
Apparatus for movement or compression of a fluid, comprising:
- pump or compressor means arranged to receive a mechanical rotational drive input by way of a rotary shaft;
- and
- drive means arranged to provide said drive input;
- said drive means comprising:
- a rotary part and pull-cord means passing around said rotary part such that said rotary part rotates when an end of said pull-cord means is pulled by a user, the rotation of the rotary part being used to provide said mechanical rotational drive input;
- and
- torque providing means arranged to provide a torque acting to retract said pull-cord means;
- wherein said rotary part and said torque providing means are not both co-axial and co-planar and wherein said torque providing means is arranged co-axially with said rotary part and axially displaced with respect to said rotary part.
5 more elements
Apparatus for movement or compression of a fluid, comprising:
- pump or compressor means arranged to receive a mechanical rotational drive input by way of a rotary shaft;
- and
- drive means arranged to provide said drive input;
- said drive means comprising:
- a rotary part and pull-cord means passing around said rotary part such that said rotary part rotates when an end of said pull-cord means is pulled by a user, the rotation of the rotary part being used to provide said mechanical rotational drive input;
- and
- torque providing means arranged to provide a torque acting to retract said pull-cord means;
- wherein said rotary part and said torque providing means are not both co-axial and co-planar and wherein said torque providing means is displaced from the rotational axis of said rotary part and the apparatus comprises torque transmission means via which said torque provided by said torque providing means is applied to said rotary part.
5 more elements
Apparatus for movement or compression of a fluid, comprising:
- pump or compressor means arranged to receive a mechanical rotational drive input by way of a rotary shaft;
- and
- drive means arranged to provide said drive input;
- said drive means comprising:
- a rotary part and pull-cord means passing around said rotary part such that said rotary part rotates when an end of said pull-cord means is pulled by a user, the rotation of the rotary part being used to provide said mechanical rotational drive input;
- and
- torque providing means arranged to provide a torque acting to retract said pull-cord means;
- wherein said rotary part and said torque providing means are not both co-axial and co-planar and wherein said rotary part comprises a pulley around which said pull-cord means is wound and which rotates when said end of said pull-cord means is pulled, and said drive means further comprises transmission means arranged to transmit rotation of said pulley to said rotary shaft, and wherein said torque providing means comprises spring means coiled around a second shaft not co-axial with the rotational axis of said pulley, and further comprising a first gear mounted to said pulley and a second gear mounted to said second shaft, by way of which gears rotation of said pulley is linked to rotation of said second shaft.
5 more elements
Dependencies are inferred from the claim text.