US4100774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lockset having improved torque blade construction
Assignee: Emhart Industries Inc
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Filing: 1977-05-18
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Granted: 1978-07-18
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Expires: 1997-05-18
Abstract
Abstract A lockset of the type having a bolt reciprocal from and to a door edge by an operating mechanism including a crank hub and locks at opposite door faces has tubular torque blades between the locks and crank hub for transmitting rotative motion from the locks to the crank hub and ultimately to the bolt for the bolt reciprocations. Both of the torque blades have tubular inner ends of D-shaped cross section with one extending axially a major part of a crank hub D-shaped cross section axial opening and telescoping the other within the crank hub. Outer enlarged tubular ends of the torque blades are telescoped by ends of lock plugs of the respective locks and have partially circumferentially extending slots formed therein receiving radial tongues of washer-like members positioned circumferentially over the lock plug ends. Thus, the torque blade inner ends are single position, rotative drive connected to the crank hub and outer ends thereof are lost motion drive connected to the locks. If a single lock is used with an inside hand operator, a single torque blade may have lost motion connection to the lock, extend completely through the crank hub and be received in the inside hand operator in direct rotative drive therebetween.
Inventors
- 👤 Paul G. Solovieff
- 👤 Robert E. Cyran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:40
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; E05B63/0056; E05B63/006; Y; Y10; Y10S; Y10S70/00; Y10S70/42; Y10S70/60; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7706; Y10T70/7712
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
282 words
In a lockset of the type having a latch bolt operably connected to a latch operating mechanism mountable in a door for reciprocation of the latch bolt between door edge extended and retracted positions, the latch operating mechanism having a crank hub partially oppositely rotatable for reciprocally moving said latch bolt, first and second actuators mounted at opposite faces of the door operably connected to the crank hub selectively operable for producing said crank hub partial rotations and said latch bolt reciprocations; the improvement comprising: a tubular female torque blade operably connected at an outer end to said first actuator partially rotatable thereby, said female torque blade having an inner end axially slideably positioned in an axial opening through said crank hub, said female torque blade including engagement means at least at said inner end automatically operable between said inner end and crank hub upon said slideable positioning positively requiring preset single position relative circumferential positioning between said inner end and crank hub during said slideable positioning and transmitting rotative motion directly between said inner end and crank hub; a male torque blade operably connected at an outer end to said second actuator partially rotatable thereby, said male torque blade having an inner end axially slideably positioned partially telescoped by said female torque blade inner end, said male torque blade including engagement means at least at said inner end automatically operable between said female and male torque blade inner ends upon said slideable positioning positively requiring preset single position relative circumferential positioning between said inner ends during said slideable positioning and transmitting rotative motion directly between said inner ends and by said female torque blade inner end directly to said crank hub.
Claim 2
Dependent Claim
282 words
In a lockset of the type having a latch bolt operably connected to a latch operating mechanism mountable in a door for reciprocation of the latch bolt between door edge extended and retracted positions, the latch operating mechanism having a crank hub partially oppositely rotatable for reciprocally moving said latch bolt, first and second actuators mounted at opposite faces of the door operably connected to the crank hub selectively operable for producing said crank hub partial rotations and said latch bolt reciprocations; the improvement comprising: a tubular female torque blade operably connected at an outer end to said first actuator partially rotatable thereby, said female torque blade having an inner end axially slideably positioned in an axial opening through said crank hub, said female torque blade including engagement means at least at said inner end automatically operable between said inner end and crank hub upon said slideable positioning positively requiring preset single position relative circumferential positioning between said inner end and crank hub during said slideable positioning and transmitting rotative motion directly between said inner end and crank hub; a male torque blade operably connected at an outer end to said second actuator partially rotatable thereby, said male torque blade having an inner end axially slideably positioned partially telescoped by said female torque blade inner end, said male torque blade including engagement means at least at said inner end automatically operable between said female and male torque blade inner ends upon said slideable positioning positively requiring preset single position relative circumferential positioning between said inner ends during said slideable positioning and transmitting rotative motion directly between said inner ends and by said female torque blade inner end directly to said crank hub.
Claim 3
Dependent Claim
32 words
In a lockset as defined in claim 1 in which said female torque blade extends axially through said crank hub opening at least a major axial part of said crank hub opening.
Claim 4
Dependent Claim
59 words
In a lockset as defined in claim 1 in which each of said engagement means of said female and male torque blades include specific single engageable shapes between said female torque blade and said crank hub and between said male torque blade and said female torque blade transmitting said rotative motion directly between said torque blades and crank hub.
Claim 5
Dependent Claim
70 words
In a lockset as defined in claim 1 in which said engagement means of said female torque blade includes an external D-shape of said female torque blade inner end received in a D-shape of said crank hub opening and said engagement means of said male torque blade includes an external D-shape of said male torque blade inner end received in an internal D-shape of said female torque blade inner end.
Claim 6
Dependent Claim
24 words
In a lockset as defined in claim 1 in which both of said female and male torque blades are tubular throughout opening oppositely axially.
Claim 7
Dependent Claim
40 words
In a lockset as defined in claim 1 in which both of said female and male torque blades are tubular throughout opening oppositely axially and each is formed of a single metal sheet having edges abutting on an axial line.
Claim 8
Dependent Claim
87 words
In a lockset as defined in claim 1 in which both of said female and male torque blades are tubular throughout opening oppositely axially; and in which said engagement means of said female torque blade includes an exterior D-shape on said female torque blade inner end received in a D-shape of said crank hub opening and said engagement means of said male torque blade includes an exterior D-shape of said male torque blade inner end received in an interior D-shape of said female torque blade inner end.
Claim 9
Dependent Claim
140 words
In a lockset as defined in claim 1 in which said operable connection between said female torque blade outer end and said first actuator includes said female torque blade outer end being hollow cylindrical and being axially telescoped by a hollow end portion of said first actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot.
Claim 10
Dependent Claim
161 words
In a lockset as defined in claim 1 in which said operable connection between said female torque blade outer end and said first actuator includes said female torque blade outer end being hollow cylindrical and being axially telescoped by a hollow end portion of said first actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot; and in which said female torque blade is formed of a single metal sheet having edges joining on an axial line.
Claim 11
Dependent Claim
144 words
In a lockset as defined in claim 1 in which said operable connection of said outer ends of each of said female and male torque blades with their respective first and second actuators include said outer end being hollow cylindrical and axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot.
Claim 12
Dependent Claim
177 words
In a lockset as defined in claim 1 in which said operable connection of said outer ends of each of said female and male torque blades with their respective first and second actuators include said outer end being hollow cylindrical and axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot; in which said male torque blade is tubular; and in which each of said female and male torque blades is formed from a single metal sheet having edges joined at an axial line.
Claim 13
Dependent Claim
253 words
In a lockset as defined in claim 1 in which said inner end of said female torque blade extends through said crank hub axial opening a major axial part of said opening; in which both of said female and male torque blades are tubular throughout opening oppositely axially; in which said engagement means of said female torque blade includes a specific exterior shape of said female torque blade inner end circumferentially engaged with a specific shape of said crank hub opening and said engagement means of said male torque blade includes a specific exterior shape of said male torque blade inner end circumferentially engaged with a specific interior shape of said female torque blade inner end; and in which said operable connection of said outer ends of each of said female and male torque blades with their respective first and second actuators include said outer end being hollow cylindrical and axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot.
Claim 14
Dependent Claim
251 words
In a lockset as defined in claim 1 in which said inner end of said female torque blade extends axially of said crank hub opening a major axial part of said crank hub opening; in which each of said female and male torque blades is tubular throughout opening oppositely axially; in which said engagement means of said female torque blade includes an exterior D-shape of said female torque blade inner end circumferentially engaged with a D-shape of said crank hub opening and said engagement means of said male torque blade includes an exterior D-shape of said male torque blade inner end circumferentially engaged with an interior D-shape of said female torque blade inner end; and in which said operable connection of said outer ends of each of said female and male torque blades with their respective first and second actuators include said outer end being hollow cylindrical and axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot.
Claim 15
Dependent Claim
206 words
In a locket of the type having a latch bolt operably connected to a latch operating mechanism mountable in a door for reciprocation of the latch bolt between door edge extended and retracted positions, the latch operating mechanism having a crank hub partially oppositely rotatable for reciprocally moving said latch bolt, an actuator mounted at a face of the door operably connected to the crank hub selectively operable for producing said crank hub partial rotations and said latch bolt reciprocations; the improvements comprising: a torque blade tubular throughout having an enlarged hollow outer end and a reduced hollow inner end, said outer end including lost motion connection means connecting said outer end to said actuator for rotation with said actuator during a part of said actuator partial rotation and for relative rotation therebetween during a part of said actuator partial rotation, said inner end being axially slideably positioned in an axial opening of said crank hub, said inner end including engagement means automatically operable between said inner end and crank hub upon said slideable positioning positively requiring preset single position relative circumferential positioning between said inner end and crank hub during said slideable positioning and transmitting rotative motion directly between said inner end and crank hub.
Claim 16
Dependent Claim
206 words
In a locket of the type having a latch bolt operably connected to a latch operating mechanism mountable in a door for reciprocation of the latch bolt between door edge extended and retracted positions, the latch operating mechanism having a crank hub partially oppositely rotatable for reciprocally moving said latch bolt, an actuator mounted at a face of the door operably connected to the crank hub selectively operable for producing said crank hub partial rotations and said latch bolt reciprocations; the improvements comprising: a torque blade tubular throughout having an enlarged hollow outer end and a reduced hollow inner end, said outer end including lost motion connection means connecting said outer end to said actuator for rotation with said actuator during a part of said actuator partial rotation and for relative rotation therebetween during a part of said actuator partial rotation, said inner end being axially slideably positioned in an axial opening of said crank hub, said inner end including engagement means automatically operable between said inner end and crank hub upon said slideable positioning positively requiring preset single position relative circumferential positioning between said inner end and crank hub during said slideable positioning and transmitting rotative motion directly between said inner end and crank hub.
Claim 17
Dependent Claim
50 words
In a lockset as defined in claim 14 in which said engagement means of said torque blade inner end includes a specific cross-sectional shape of said torque blade inner end circumferentially engaging a corresponding specific cross-sectional shape of said crank hub requiring said single positioning and transmitting said rotative motion.
Claim 18
Dependent Claim
34 words
In a lockset as defined in claim 14 in which said engagement means of said torque blade inner end includes both said torque blade inner end and said crank hub opening being formed D-shaped.
Claim 19
Dependent Claim
70 words
In a lockset as defined in claim 14 in which said torque blade is formed of a single metal sheet having edges abutting on an axial line; and in which said engagement means of said torque blade inner end includes a specific cross-sectional shape of said torque blade inner end circumferentially engaging a corresponding specific cross-sectional shape of said crank hub requiring said single positioning and transmitting said rotative motion.
Claim 20
Dependent Claim
86 words
In a lockset as defined in claim 14 in which said lockset is of the type wherein said actuator is a first actuator at a first face of the door and a second actuator is mounted at a second face of the door; and in which said torque blade inner end is axially slideably positioned extending axially through said crank hub axial opening and to said second actuator being operably connected to said second actuator transmitting partial rotations of said second actuator to said crank hub.
Claim 21
Dependent Claim
174 words
In a lockset as defined in claim 14 in which said lost motion connection means of said torque blade outer end includes said torque blade outer end being axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot; and in which said engagement means of said torque blade inner end includes a specific cross-sectional shape of said torque blade inner end circumferentially engaging a corresponding specific cross-sectional shape of said crank hub requiring said single positioning and transmitting said rotative motion.
Claim 22
Dependent Claim
235 words
In a lockset as defined in claim 14 in which said lost motion connection means of said torque blade outer end includes said torque blade outer end being axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot; in which said engagement means of said torque blade inner end includes both said torque blade inner end and said crank hub opening being formed D-shaped; in which said lockset is of the type wherein said actuator is a first actuator at a first face of the door and a second actuator is mounted at a second face of the door; and in which said torque blade inner end is axially slideably positioned extending axially through said crank hub axial opening and to said second actuator being operably connected to said second actuator transmitting partial rotations of said second actuator to said crank hub.
Claim 23
Dependent Claim
212 words
In a lockset of the type having a latch bolt operably connected to a latch operating mechanism mountable in a door for reciprocation of the latch bolt between door edge extended and retracted positions, the latch operating mechanism having a crank hub partially oppositely rotatable for reciprocally moving said latch bolt, an actuator mounted at a face of the door operably connected to the crank hub selectively operable for producing said crank hub partial rotations and said latch bolt reciprocations; the improvements comprising: a torque blade having an inner end engaged with said crank hub directly transmitting rotative motion thereto, a hollow cylindrical outer end on said torque blade axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot.
Claim 24
Dependent Claim
212 words
In a lockset of the type having a latch bolt operably connected to a latch operating mechanism mountable in a door for reciprocation of the latch bolt between door edge extended and retracted positions, the latch operating mechanism having a crank hub partially oppositely rotatable for reciprocally moving said latch bolt, an actuator mounted at a face of the door operably connected to the crank hub selectively operable for producing said crank hub partial rotations and said latch bolt reciprocations; the improvements comprising: a torque blade having an inner end engaged with said crank hub directly transmitting rotative motion thereto, a hollow cylindrical outer end on said torque blade axially telescoped by a hollow end portion of said actuator, a circumferential slot formed in said torque blade outer end at said actuator end portion, said slot extending circumferentially only a part of said torque blade outer end, a washer-like member secured circumferentially over said actuator end portion and having a radial tongue projecting through said actuator end portion and into said torque blade outer end slot permitting relative rotation between said actuator and torque blade during circumferential movement of said washer-like member tongue in said torque blade outer end slot and producing simultaneous rotation during tongue engagement at ends of said slot.
Claim 25
Dependent Claim
33 words
In a lockset as defined in claim 21 in which diametrically opposite slots are formed in an outer surface of said actuator end portion receiving diametrically opposite parts of said washer-like member therein.
Claim 26
Dependent Claim
34 words
In a lockset as defined in claim 21 in which said circumferential slot formed in said torque blade outer end extends circumferentially more than one-half of the circumference of said torque blade outer end.
Claim 27
Dependent Claim
27 words
In a lockset as defined in claim 21 in which said washer-like member is formed of spring metal and resiliently clamps circumferentially over said actuator end portion.
Claim 28
Dependent Claim
82 words
In a lockset as defined in claim 21 in which diametrically opposite slots are formed in an outer surface of said actuator end portion receiving diametrically opposite parts of said washer-like member therein; in which said circumferential slot formed in said torque blade outer end extends circumferentially more than one-half of the circumference of said torque blade outer end; and in which said washer-like member is formed of spring metal and resiliently clamps circumferentially over said actuator end portion in said slots.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |