US4238002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension device
Assignee: Individual
•
Filing: 1978-07-31
•
Granted: 1980-12-09
•
Expires: 1998-07-31
Abstract
Abstract Apparatus for suspending a mass and using the weight of said mass to slowly rotate it. The apparatus includes a housing and a shaft within the housing coupled to said housing by means of a spiral cam so that longitudinal movement of the shaft causes the shaft to rotate. The shaft is also coupled to the housing by damping means which limits the rotational speed of the shaft to some preselected rate.
Inventors
- 👤 Don L. Hexamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:29
CPC Classifications
F; F03; F03G; F03G3/00; F03G3/087; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1527
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
Apparatus for suspending and rotating a body having mass comprising; (a) a housing, (b) a shaft within said housing and extending from one end thereof, said shaft coupled to said housing by spiral cam means for rotating said shaft in response to axial movement of said shaft, (c) means for supplying a load to said shaft to thereby cause said shaft to rotate by action of gravity on said load; (d) damping means contained within said housing; and (e) arm means operably connected to said shaft and extending into said damping means whereby rotation of said shaft causes movement of said arm means within said damping means to thereby control rotational speed of said shaft.
Claim 2
Dependent Claim
115 words
Apparatus for suspending and rotating a body having mass comprising; (a) a housing, (b) a shaft within said housing and extending from one end thereof, said shaft coupled to said housing by spiral cam means for rotating said shaft in response to axial movement of said shaft, (c) means for supplying a load to said shaft to thereby cause said shaft to rotate by action of gravity on said load; (d) damping means contained within said housing; and (e) arm means operably connected to said shaft and extending into said damping means whereby rotation of said shaft causes movement of said arm means within said damping means to thereby control rotational speed of said shaft.
Claim 3
Dependent Claim
134 words
Apparatus for suspending a body having mass and rotating said body comprising: (a) a housing, having a spiral cam on at least a portion of its inner surface, (b) a shaft positioned within said housing and extending from one end thereof having a cam follower, said cam follower engaging said spiral cam so that movement of said shaft along its axis causes said shaft to rotate, (c) damping means contained within said housing, (d) arm means operably connected to said shaft and extending into said damping means whereby rotation of said shaft causes movement of said arm means within said damping means to thereby control rotational speed of said shaft, and (e) means for supplying a load to said shaft to thereby cause said shaft to rotate by action of gravity on said load.
Claim 4
Dependent Claim
134 words
Apparatus for suspending a body having mass and rotating said body comprising: (a) a housing, having a spiral cam on at least a portion of its inner surface, (b) a shaft positioned within said housing and extending from one end thereof having a cam follower, said cam follower engaging said spiral cam so that movement of said shaft along its axis causes said shaft to rotate, (c) damping means contained within said housing, (d) arm means operably connected to said shaft and extending into said damping means whereby rotation of said shaft causes movement of said arm means within said damping means to thereby control rotational speed of said shaft, and (e) means for supplying a load to said shaft to thereby cause said shaft to rotate by action of gravity on said load.
Claim 5
Dependent Claim
129 words
Apparatus for suspending and rotating an object comprising: (a) a housing, (b) a shaft positioned within said housing and extending from one end thereof, said shaft having a spiral surface along at least a portion of its length and said housing having means for engaging said spiral surface, whereby movement of said shaft along its axis causes said shaft to rotate, (c) damping means contained within said housing, (d) arm means operably connected to said shaft and extending into said damping means whereby rotation of said shaft causes movement of said arm means within said damping means to thereby control rotational speed of said shaft, and (e) means for supplying a load to said shaft to thereby cause said shaft to rotate by action of gravity on said load.
Claim 6
Dependent Claim
129 words
Apparatus for suspending and rotating an object comprising: (a) a housing, (b) a shaft positioned within said housing and extending from one end thereof, said shaft having a spiral surface along at least a portion of its length and said housing having means for engaging said spiral surface, whereby movement of said shaft along its axis causes said shaft to rotate, (c) damping means contained within said housing, (d) arm means operably connected to said shaft and extending into said damping means whereby rotation of said shaft causes movement of said arm means within said damping means to thereby control rotational speed of said shaft, and (e) means for supplying a load to said shaft to thereby cause said shaft to rotate by action of gravity on said load.
Claim 7
Dependent Claim
21 words
Apparatus according to claim 1 further including ratchet means for allowing said shaft to move axially into said housing without rotating.
Claim 8
Dependent Claim
29 words
The apparatus according to claim 1 wherein said damping means is selected from the group consisting of a viscous liquid, a semi-solid and a solid having cold flow properties.
Claim 9
Dependent Claim
16 words
The apparatus of claim 5 wherein said damping means is a polymer having cold flow properties.
Claim 10
Dependent Claim
10 words
The apparatus of claim 6 wherein said polymer is cis-polybutadiene.
Claim 11
Dependent Claim
118 words
Apparatus for suspending a body having mass and rotating said body comprising: (a) a housing, having a spiral cam on at least a portion of its inner surface; (b) a shaft positioned within said housing and extending from one end thereof having a cam follower, said cam follower engaging said spiral cam so that movement of said shaft along its axis causes said shaft to rotate; (c) damping means coupled to said housing and to said shaft to limit the rotational speed of said shaft; (d) ratchet means for allowing said shaft to move axially into said housing without rotating; and, (e) a spring coupled between said shaft and said housing for urging said shaft into said housing.
Claim 12
Dependent Claim
118 words
Apparatus for suspending a body having mass and rotating said body comprising: (a) a housing, having a spiral cam on at least a portion of its inner surface; (b) a shaft positioned within said housing and extending from one end thereof having a cam follower, said cam follower engaging said spiral cam so that movement of said shaft along its axis causes said shaft to rotate; (c) damping means coupled to said housing and to said shaft to limit the rotational speed of said shaft; (d) ratchet means for allowing said shaft to move axially into said housing without rotating; and, (e) a spring coupled between said shaft and said housing for urging said shaft into said housing.
Claim 13
Dependent Claim
96 words
Apparatus for suspending and rotating an object comprising: (a) a housing; (b) a shaft positioned within said housing and extending from one end thereof, said shaft having a spiral surface along at least a portion of its length and said housing having means for engaging said spiral surface, whereby movement of said shaft along its axis causes said shaft to rotate; (c) damping means coupled to said housing and said shaft to limit the rate of rotation of said shaft; and, (d) ratchet means for allowing said shaft to move axially into said housing without rotating.
Claim 14
Dependent Claim
96 words
Apparatus for suspending and rotating an object comprising: (a) a housing; (b) a shaft positioned within said housing and extending from one end thereof, said shaft having a spiral surface along at least a portion of its length and said housing having means for engaging said spiral surface, whereby movement of said shaft along its axis causes said shaft to rotate; (c) damping means coupled to said housing and said shaft to limit the rate of rotation of said shaft; and, (d) ratchet means for allowing said shaft to move axially into said housing without rotating.
Claim 15
Dependent Claim
23 words
Apparatus according to claim 9 further including a spring coupled between said shaft and said housing for urging said shaft into said housing.
References Cited (Backward Citations)
US471886A
Cited
US1080593A
Cited
US2251364A
Cited
US2998167A
Cited
US3471148A
Cited
US4117630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |